Flotation Pontoon Devices with Manual Propulsion Mechanisms and Corresponding Methods

Abstract

A watercraft includes a first pontoon slidably coupled to a second pontoon, at least one paddle coupled to the first pontoon, and at least one other paddle coupled to the second pontoon. A propulsion mechanism moves the paddles reciprocally when the pontoons move reciprocally relative to each other, with the paddles moving faster than the pontoons. The propulsion mechanism can include cables engaging pulleys carried by the pontoons, translating the reciprocating motion into paddle movement. The watercraft features paddle cavities on the undersides of the pontoons, housing paddle spacers and retaining rollers. A paddle retractor, such as a torsion spring, biases the paddles to retract when moving forward and deploy when moving rearward. A sliding connector with rollers ensures smooth reciprocal movement of the pontoons. Alternative propulsion mechanisms include racks and gears or belts and gears, optimizing the translation of reciprocating motion into forward thrust.

Description

CROSS REFERENCE TO PRIOR APPLICATIONS

This application claims priority and benefit under 35 U.S.C. § 119(e) from U.S. Provisional Application No. 63/582, 116, filed Sep. 12, 2023, which is incorporated by reference for all purposes.

BACKGROUND

Technical Field

This disclosure relates generally to watercraft, and more particularly to manually powered watercraft.

Background Art

Devices designed for walking on water typically involve two buoyant supports, one for each foot. Users attempt to propel themselves forward by mimicking a walking motion. Existing designs often suffer from instability and insufficient forward propulsion. These limitations hinder the effectiveness and practicality of such devices. It would be advantageous to have an improved watercraft offering better stability and better forward propulsion.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying figures, where like reference numerals refer to identical or functionally similar elements throughout the separate views and which together with the detailed description below are incorporated in and form part of the specification, serve to further illustrate various embodiments and to explain various principles and advantages all in accordance with the present disclosure.

FIG. 1 illustrates one explanatory watercraft in accordance with one or more embodiments of the disclosure.

FIG. 2 illustrates a bottom perspective view of one explanatory watercraft in accordance with one or more embodiments of the disclosure.

FIG. 3 illustrates one explanatory watercraft in accordance with one or more embodiments of the disclosure having a first pontoon forward of a second pontoon.

FIG. 4 illustrates one explanatory watercraft in accordance with one or more embodiments of the disclosure having a second pontoon forward of a first pontoon.

FIG. 5 illustrates a bottom perspective view of one explanatory watercraft in accordance with one or more embodiments of the disclosure having a first pontoon forward of a second pontoon.

FIG. 6 illustrates a portion of one explanatory watercraft, along with a portion of one explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIG. 7 illustrates another portion of one explanatory watercraft, along with another portion of one explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIG. 8 illustrates another portion of one explanatory watercraft, along with another portion of one explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIG. 9 illustrates a portion of one explanatory propulsion mechanism in accordance with one or more embodiments of the disclosure.

FIG. 10 illustrates one explanatory propulsion mechanism in accordance with one or more embodiments of the disclosure.

FIG. 11 illustrates one explanatory paddle assembly in accordance with one or more embodiments of the disclosure.

FIG. 12 illustrates a sectional view of one explanatory watercraft in accordance with one or more embodiments of the disclosure showing an explanatory paddle assembly engaging an explanatory paddle assembly receiver.

FIGS. 13-14 illustrate a portion of one explanatory watercraft having a female sliding connector receiver situated on a minor surface in accordance with one or more embodiments of the disclosure.

FIG. 15 illustrates another portion of one explanatory watercraft having a sliding male connector receiver situated on a minor surface in accordance with one or more embodiments of the disclosure.

FIGS. 16-19 illustrate one explanatory female sliding connector receiver engaging a sliding male connector receiver in accordance with one or more embodiments of the disclosure.

FIGS. 20-21 illustrate still other portions of one explanatory watercraft having a sliding male connector receiver situated on a minor surface in accordance with one or more embodiments of the disclosure.

FIGS. 22-23 illustrate a sliding male connector receiver in accordance with one or more embodiments of the disclosure.

FIGS. 24-26 illustrate one explanatory propulsion mechanism with paddles in a first configuration in accordance with one or more embodiments of the disclosure.

FIG. 27 illustrates a portion of one explanatory watercraft with an explanatory propulsion mechanism with paddles in a first configuration in accordance with one or more embodiments of the disclosure.

FIG. 28 illustrates one explanatory watercraft with an explanatory propulsion mechanism with paddles in a first configuration in accordance with one or more embodiments of the disclosure.

FIG. 29 illustrates a bottom perspective view of one explanatory watercraft with an explanatory propulsion mechanism with paddles in a first configuration in accordance with one or more embodiments of the disclosure.

FIG. 30 illustrates a bottom perspective view of one explanatory watercraft with an explanatory propulsion mechanism with paddles in a second configuration in accordance with one or more embodiments of the disclosure.

FIG. 31 illustrates one explanatory watercraft with an explanatory propulsion mechanism with paddles in a second configuration in accordance with one or more embodiments of the disclosure.

FIG. 32 illustrates one explanatory propulsion mechanism with paddles in a second configuration in accordance with one or more embodiments of the disclosure.

FIG. 33 illustrates a portion of one explanatory watercraft with an explanatory propulsion mechanism with paddles in a second configuration in accordance with one or more embodiments of the disclosure.

FIG. 34 illustrates a portion of another explanatory propulsion mechanism in accordance with one or more embodiments of the disclosure.

FIG. 35 illustrates another portion of one explanatory propulsion mechanism in accordance with one or more embodiments of the disclosure.

FIG. 36 illustrates a portion of another explanatory watercraft, along with a portion of another explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIG. 37 illustrates another portion of another explanatory watercraft, along with another portion of another explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIG. 38 illustrates still another portion of one explanatory propulsion system in accordance with one or more embodiments of the disclosure.

FIG. 39 illustrates another portion of another explanatory watercraft, along with another portion of another explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIG. 40 illustrates still another portion of another explanatory watercraft, along with another portion of another explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIGS. 41-43 illustrate one explanatory propulsion system in accordance with one or more embodiments of the disclosure.

FIGS. 44-48 illustrate one explanatory paddle biasing system in accordance with one or more embodiments of the disclosure.

FIGS. 49-50 illustrate another explanatory paddle biasing system in accordance with one or more embodiments of the disclosure.

FIGS. 51-54 illustrate portions of still another explanatory propulsion system in accordance with one or more embodiments of the disclosure.

FIG. 55-58 illustrate still other portions of another explanatory watercraft, along with other portions of another explanatory propulsion mechanism, in accordance with one or more embodiments of the disclosure.

FIG. 59 illustrates one explanatory paddle in accordance with one or more embodiments of the disclosure.

FIG. 60 illustrates one explanatory pontoon locking system in accordance with one or more embodiments of the disclosure.

FIG. 61 illustrates one explanatory fin in accordance with one or more embodiments of the disclosure.

FIGS. 62-63 illustrate another explanatory paddle assembly in accordance with one or more embodiments of the disclosure.

FIG. 64 illustrates one explanatory system in accordance with one or more embodiments of the disclosure.

FIG. 65 illustrates one explanatory method in accordance with one or more embodiments of the disclosure.

FIG. 66 illustrates various embodiments of the disclosure.

Skilled artisans will appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help to improve understanding of embodiments of the present disclosure.

DETAILED DESCRIPTION OF THE DRAWINGS

Before describing in detail embodiments that are in accordance with the present disclosure, it should be observed that the embodiments reside primarily in combinations of method steps and apparatus components related to generating forward thrust in a watercraft. Any process descriptions or blocks in flow charts should be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process.

Alternate implementations are included, and it will be clear that functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved. Accordingly, the apparatus components and method steps have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

Embodiments of the disclosure are now described in detail. Referring to the drawings, like numbers indicate like parts throughout the views. As used in the description herein and throughout the claims, the following terms take the meanings explicitly associated herein, unless the context clearly dictates otherwise: the meaning of “a,” “an,” and “the” includes plural reference, the meaning of “in” includes “in” and “on.” Relational terms such as first and second, top and bottom, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

As used herein, components may be “operatively coupled” when information can be sent between such components, even though there may be one or more intermediate or intervening components between, or along the connection path. The terms “substantially,” “essentially,” “approximately,” “about,” or any other version thereof, are defined as being close to as understood by one of ordinary skill in the art, and in one non-limiting embodiment the term is defined to be within ten percent, in another embodiment within five percent, in another embodiment within one percent and in another embodiment within one-half percent.

The term “coupled” as used herein is defined as connected, although not necessarily directly and not necessarily mechanically. Also, reference designators shown herein in parenthesis indicate components shown in a figure other than the one in discussion. For example, talking about a device (10) while discussing figure A would refer to an element, 10, shown in figure other than figure A.

As noted above, there have been numerous attempts at inventing devices for walking on water. These devices, often referred to as “Water Walkers,” generally consist of two floatation pontoons, one for the left foot and one for the right foot. Users attempt to propel themselves forward by conducting a walking-type motion. Unfortunately, prior art designs are limited in function due to instability and inadequate net forward propulsion generation. These limitations hinder the effectiveness and practicality of such devices.

Advantageously, embodiments of the disclosure provide a solution to these problems. In one or more embodiments, a watercraft comprises a first pontoon slidably coupled to a second pontoon. In one or more embodiments, at least one paddle is coupled to the first pontoon and at least one other paddle is coupled to the second pontoon.

In one or more embodiments, the watercraft comprises a propulsion mechanism operable to move the at least one paddle and the at least one other paddle reciprocally when the first pontoon and the second pontoon move reciprocally relative to each other. In one or more embodiments, the propulsion mechanism moves the paddles with a speed of movement greater than another speed of movement of the first pontoon and the second pontoon to generate forward thrust for the watercraft.

It should be noted that the paddles move faster than the pontoons relative to the water because the paddles are moving across the pontoons. Thus, even if the pontoons are moving rearward at four miles per hour, and the paddles are moving across the pontoons at two miles per hour, the paddles are moving relative to the water at six miles per hour, while the pontoons are only moving at four miles per hour. Thus, as described herein, when the paddles move at a speed greater than the pontoons this is because they are moving relative to the pontoons as the pontoons move. Thus, this greater speed is with reference to the water.

Illustrating by example, when one pontoon moves forward, it pushes the paddles on the other pontoon rearward, and vice versa. Accordingly, the paddle can move back faster than the pontoon it is under. Just like a stand up paddle board, canoe or kayak user needs to push the paddle back at a faster speed relative to the water, embodiments of the disclosure do the same thing. To achieve adequate forward motion, the paddles underneath the pontoons need to move rearward, faster than the pontoons.

Advantageously, the arrangement of a first pontoon slidably coupled to a second pontoon allows for a stable and controlled reciprocating motion, which is essential for maintaining balance and effective propulsion on water. This configuration addresses the instability issues found in prior art designs, providing a more reliable and user-friendly experience.

By coupling at least one paddle to each pontoon and incorporating a propulsion mechanism that moves the paddles reciprocally with a speed greater than the speed of the pontoons, embodiments of the disclosure ensure that the paddles generate sufficient rearward thrust to propel the watercraft forward. This mechanism overcomes the limitation of inadequate forward propulsion seen in previous designs, enabling more efficient and effective movement on water.

The propulsion mechanism's ability to move the paddles at a speed greater than the pontoons' movement speed is a significant improvement over prior art designs. This feature ensures that the paddles can push against the water with greater force due to the fact that the paddle moves faster than the boat to generate forward thrust. This results in a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft.

Accordingly, embodiments of the disclosure harness power from the reciprocating or walking motion of pontoons, which drives paddles under the pontoons rearward. This rearward motion of the paddles propels the apparatus and user forward, allowing the user to “walk on water.” Utilizing a set of pulleys and cables, or alternatively utilizing gears/pinions or belts/gears, the reciprocating movement of the pontoons creates a force that moves the paddles backward and forward faster than the relative speed of the pontoons. This configuration generates adequate rearward force and improved net forward movement.

Embodiments of the disclosure allow for better net forward thrust by powering paddles under the pontoons that move rearward faster than the pontoon itself. Embodiments of the disclosure translate reciprocating pontoon movement to paddle movement, which can be multiplied if necessary, by utilizing differential cable pulleys, belts, or gears.

In one or more embodiments, a method in a watercraft involves receiving energy from a first pontoon that moves slidably in an opposite direction relative to a second pontoon coupled to the first pontoon. The propulsion mechanism carried by the watercraft harnesses this energy to drive a first set of paddles coupled to an underside of the first pontoon and a second set of paddles coupled to an underside of the second pontoon. The propulsion mechanism drives the paddles with a linear velocity that is greater than the linear velocity experienced by the first pontoon and the second pontoon.

In one or more embodiments, the propulsion mechanism translates the reciprocating motion of the pontoons into a faster movement of the paddles, thereby generating forward thrust. This method ensures that the paddles move at a speed greater than the pontoons, which provides effective propulsion. The increased speed of the paddles relative to the pontoons allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft.

Advantageously, by receiving energy from the first pontoon that moves slidably in an opposite direction relative to the second pontoon, the propulsion mechanism effectively harnesses the reciprocating motion of the pontoons. This energy transfer mechanism ensures that the movement of the pontoons is efficiently converted into a driving force for the paddles, thereby optimizing the propulsion process.

The propulsion mechanism drives the first set of paddles coupled to the underside of the first pontoon and the second set of paddles coupled to the underside of the second pontoon with a linear velocity greater than the linear velocity experienced by the pontoons. This increased paddle speed relative to the pontoons ensures that the paddles can push against the water with greater force, generating sufficient rearward thrust to propel the watercraft forward. This results in a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft.

Advantageously, this method addresses the limitations of prior art designs by ensuring that the paddles move at a speed greater than the pontoons, providing effective propulsion. The increased speed of the paddles relative to the pontoons allows for a more efficient and effective movement on water, overcoming the issue of inadequate forward propulsion seen in previous designs.

Embodiments of the disclosure contemplate that numerous attempts to design a water walking device have been documented, with citations dating back to 1858. Historical records indicate that Leonardo Da Vinci sketched a man walking on water with floats. The general premise of these designs involves two pontoon-type floatation devices, one under each foot. Some designs depict standalone pontoons, while others have the pontoons tethered. Tethers have consisted of a soft line or elastic cord, and some designs describe plastic pieces in contact with each other. Other designs describe reciprocating pontoons that are held adjacent to one another and are allowed to move forward and back relative to each other.

Currently, no designs are available on the market. Embodiments of the disclosure contemplate that a primary reason that prior art designs have not worked is that two untethered pontoons are unstable. A soft, loose tether improves stability somewhat, but the system remains quite unstable and difficult to keep the pontoons aligned and in the proper direction. Advantageously, embodiments of the disclosure provide a solution to this situation with its innovative sliding connector that slidably couples the first pontoon to the second pontoon.

In one or more embodiments, the sliding connector comprises a sliding male connector coupled to one of the first pontoon or the second pontoon and a female sliding connector receiver coupled to another of the first pontoon or the second pontoon and engaging the sliding male connector. The sliding male connector and the female sliding connector receiver facilitate the reciprocal movement of the pontoons relative to each other, ensuring that the pontoons remain aligned and stable during operation. This configuration allows for smooth and controlled reciprocating motion, which is crucial for maintaining balance and effective propulsion on water.

In one or more embodiments, the sliding connector further comprises a first sliding male connector roller and a second sliding male roller connector coupled to the sliding male connector and engaging inner surfaces of the female sliding connector receiver. These rollers reduce friction and ensure smooth movement of the sliding male connector within the female sliding connector receiver. The rollers also help to maintain the alignment of the pontoons, preventing any lateral movement that could destabilize the watercraft.

In one or more embodiments, the sliding connector also includes a first sliding male connector stabilization roller and a second sliding male connector stabilization roller coupled to the sliding male connector and engaging other inner surfaces of the female sliding connector receiver. These stabilization rollers provide additional support and stability to the sliding connector, ensuring that the pontoons remain securely coupled and aligned during operation. The combination of the sliding male connector, female sliding connector receiver, and the various rollers ensures a robust and reliable sliding mechanism that enhances the overall performance and stability of the watercraft.

In one or more embodiments, the watercraft comprises a paddle retractor assembly, which can be configured as a spring, elastic bands, or in other ways that will be obvious to those of ordinary skill in the art having the benefit of this disclosure. In one or more embodiments, when each pontoon moves forward, the paddle can rotate back, decreasing friction with the water. When the pontoon moves rearward, the paddle swings down to create resistance with the water, resulting in forward propulsion.

In one or more embodiments, when one pontoon moves forward, the pontoon pushes the paddle on the other pontoon rearward, and vice versa. This allows the paddle to move back faster than the pontoon the paddle is under. Embodiments of the disclosure contemplate that, to achieve adequate forward motion, the paddles underneath the pontoons need to move rearward faster than the pontoons.

In one or more embodiments, to generate net forward force, the propulsion system is implemented using a cable/pulley and/or gear/pinion and/or belt/gear system. In one configuration, two pulleys, one in the front and one in the back of each pontoon, are positioned to drive the paddles through the reciprocating movement. Two cables are utilized in this design. One cable goes around the two left pulleys and attaches to the right pontoon, while the other cable goes around the two right pulleys and attaches to the left pontoon. In one or more embodiments, these cables connect to the paddles under each pontoon, ensuring separate paddles for each pontoon.

Alternatively; a single pulley for each pontoon, placed more centrally, may be employed. This design may necessitate the use of a toothed belt drive. Another possible configuration involves a gearing system (rack and pinion) that translates the reciprocating movement of the pontoons into paddle movement. The reciprocating movement of the pontoons causes the cables, belts, or gears to move the connected paddles backward and forward along the longitudinal axis of their respective pontoons, thereby creating forward thrust. Other configurations for the propulsion system will be obvious to those of ordinary skill in the art having the benefit of this disclosure.

In one or more embodiments, reciprocating movement is translated to paddle movement, which can be multiplied by utilizing differential cable pulleys, belts, or gears. When generating forward thrust, in one or more embodiments the paddles remain at or near ninety degrees relative to the water surface to maximize resistance. After the rearward motion of the paddles, in one or more embodiments they move forward to start the cycle again. During forward translation, some embodiments reduce friction as much as possible by hinging or rotating the paddles upward under the pontoons during forward motion. In one or more embodiments, the paddles align nearly parallel to the water surface to minimize friction in this condition. Advantageously, this retraction mechanism also keeps the paddles up and out of the way when the operator is not walking, i.e., when the paddles are at rest.

One method to achieve this involves using an elastic band that retracts the paddles when not moving rearward. One end of the band attaches to the pontoon, and the other to the back of the paddle, creating upward tension to keep the paddle retracted. When the pontoon moves rearward, the water's force on the paddle overcomes the elastic band's tension, causing the paddle to move downward. Another method employs torsion or double torsion springs to keep the paddles up when at rest or moving forward and allow them to move down when moving rearward. Other configurations for the paddle retractor will be obvious to those of ordinary skill in the art having the benefit of this disclosure.

In one or more embodiments, a watercraft comprises a pair of flotation pontoons, paddles slidably coupled under the pair of flotation pontoons, a propulsion mechanism configured to harness a reciprocating motion of the pair of pontoons to drive the paddles under the pair of flotation pontoons faster than the motion of the pair of flotation pontoons when moving with a reciprocal motion relative to each other. In one or more embodiments, the watercraft comprises a sliding rail system configured to slidably couple the pair of flotation pontoons together, and a paddle retraction mechanism configured to pivot the paddles upwards when moving forward and deploy the paddles downward when moving rearward.

In one or more embodiments, the propulsion mechanism in this watercraft utilizes the reciprocating motion of the pontoons to generate forward thrust. The sliding rail system ensures that the pontoons remain aligned and stable during operation, allowing for smooth and controlled reciprocating motion. The paddle retraction mechanism reduces friction by pivoting the paddles upwards during forward motion and deploying them downward during rearward motion, optimizing the propulsion process. Other advantages will be described below. Still others will be obvious to those of ordinary skill in the art having the benefit of this disclosure.

Turning now to FIGS. 1-2. Illustrated therein is one explanatory watercraft 100 in accordance with one or more embodiments of the disclosure. FIG. 1 illustrates a top perspective view of the watercraft 100, while FIG. 2 illustrates a bottom perspective view of the same.

FIG. 1 illustrates a watercraft 100 comprising a first pontoon 101 and a second pontoon 102. The first pontoon 101 and the second pontoon 102 are designed to provide buoyancy and stability to the watercraft 100. The arrangement of the pontoons 101,102 allows for a reciprocating motion, which is required for the manual propulsion mechanism described.

In FIGS. 1 and 2, the first pontoon 101 and the second pontoon 102 are positioned parallel to each other, enabling the user to perform a walking motion on water. This configuration ensures that the watercraft 100 remains balanced and stable during operation. The pontoons 101,102 are constructed to be buoyant, which can be achieved through various materials and techniques such as foam covered fiberglass, carbon fiber, inflatable designs, or molded plastics.

In one or more embodiments, the watercraft 100 utilizes a propulsion mechanism 200 that harnesses the reciprocating motion of the pontoons 101,102 to drive paddles 203,204,205,206 located underneath each pontoon 101,102. Illustrating by example, in this illustrative embodiment a first paddle 203 and as second paddle 205 are situated beneath the first pontoon 101, while a third paddle 204 and a fourth paddle 206 are situated beneath the second pontoon 102.

In one or more embodiments, the propulsion mechanism 200 drives the paddles 203,204,205,206 to move backward and forward faster than the relative speed of the pontoons 101,102, thereby generating adequate rearward force and improved net forward movement. As will be described below, the propulsion mechanism 200 can be implemented using a combination of cables, pulleys, gears, pinions, or belts.

In one or more embodiments, the first pontoon 101 and the second pontoon 102 are designed to be longer than they are wide, providing a streamlined shape that facilitates movement through the water. In the illustrative embodiment of FIGS. 1 and 2, the shape of the watercraft 100 is that of a paddleboard or surfboard. However, the shape and dimensions of the pontoons 101,102 can vary, as will be obvious to those of ordinary skill in the art having the benefit of this disclosure. In one or more embodiments, the pontoons 101,102 are generally configured to support the user's weight and provide sufficient buoyancy for walking on water.

In one or more embodiments, the watercraft 100 may also incorporate additional features such as a sliding rail system to keep the pontoons 101,102 aligned and stable during operation, a paddle retraction mechanism to reduce friction when the paddles 203,204,205,206 move forward, and a locking mechanism to secure the pontoons 101,102 together when a reciprocating motion is not desired. These features enhance the overall functionality and user experience of the watercraft 100.

As shown in FIG. 2, in one or more embodiments the first pontoon 101 houses first paddle 203 and a second paddle 205, while the second pontoon 102 houses a third paddle 204 and a fourth paddle 206. In this illustrative embodiment, the first pontoon 101 defines a first paddle cavity 201, while the second pontoon 102 defines a second paddle cavity 202. In one or more embodiments, the paddles 203,204,205,206 are configured to retract within the first paddle cavity 201 and the second paddle cavity 202 when the first pontoon 101 or second pontoon 102 are moving forward, to help to decrease friction during the forward motion of the pontoons 101,102. In one or more embodiments, the first paddle cavity 201 and the second paddle cavity 202 allow the paddles 203,204,205,206 to retract upwards when moving forward, reducing drag and facilitating smoother movement through the water.

In this illustrative embodiment, the first paddle cavity 201 is defined on the underside of the first pontoon 101. This cavity houses the first paddle 203 and the second paddle 205.

In one or more embodiments, the first paddle cavity 201 is designed to accommodate the movement of the paddles 203,205, allowing them to retract upwards when moving forward and deploy downwards when moving rearward. The second paddle cavity 202 works similarly. In one or more embodiments, the inclusion of the first paddle cavity 201 and the first paddle cavity 201 helps to decrease friction during the forward motion of the pontoons 101,102, facilitating smoother movement through the water.

Similar to the first paddle cavity 201, in one or more embodiments the second paddle cavity 202 is defined on the underside of the second pontoon 102. In one or more embodiments, the second paddle cavity 202 houses the third paddle 204 and the fourth paddle 206. The second paddle cavity 202 is designed to allow the paddles 204,206 to retract upward when moving forward and deploy downwards when moving rearward.

In this illustrative embodiment, the first paddle 203 is coupled to the first pontoon 101 and is situated within the first paddle cavity 201. The first paddle 203 is designed to move backward and forward faster than the relative speed of the first pontoon 101. When the first pontoon 101 moves forward, the first paddle 203 retracts upward into the first paddle cavity 201 to reduce friction. When the first pontoon 101 moves rearward, the first paddle 203 deploys downward and extends distally from the first paddle cavity 201 to create resistance with the water, resulting in forward propulsion. In one or more embodiments, the first paddle 203 is connected to the propulsion mechanism 200, which drives the movement of the first paddle 203 in synchronization with the reciprocating motion of the pontoons 101,102.

In one or more embodiments, the second paddle 205 is also coupled to the first pontoon 101 and is situated within the first paddle cavity 201. The second paddle 205 works in conjunction with the first paddle 203 due to the fact that, as will be described below, the first paddle 203 and the second paddle 205 are coupled together by a first paddle spacer. As with the first paddle 203, the second paddle 205 moves backward and forward faster than the relative speed of the first pontoon 101, generating adequate rearward force to propel the watercraft 100 forward. When the first pontoon 101 moves forward, the second paddle 205 retracts upward into the first paddle cavity 201 to minimize friction. When the first pontoon 101 moves rearward, the second paddle 205 deploys downward to extend distally from the first paddle cavity 201 to create resistance with the water, contributing to the forward propulsion of the watercraft 100.

In one or more embodiments, the third paddle 204 is coupled to the second pontoon 102 and is situated within the second paddle cavity 202. The third paddle 204 is designed to move backward and forward faster than the relative speed of the second pontoon 102. When the second pontoon 102 moves forward, the third paddle 204 retracts upward into the second paddle cavity 202 to reduce friction. When the second pontoon 102 moves rearward, the third paddle 204 deploys downward to extend distally from the second paddle cavity 202 to create resistance with the water, resulting in forward propulsion. In one or more embodiments, the third paddle 204 is driven by the propulsion mechanism 200, which ensures the movement of the third paddle 204 is synchronized with the reciprocating motion of the pontoons.

The fourth paddle 206 is also coupled to the second pontoon 102 and is situated within the second paddle cavity 202. The fourth paddle 206 works in tandem with the third paddle 204 as part of the propulsion mechanism 200 due to the fact that the fourth paddle 206 is coupled to the third paddle 204 by a second paddle spacer in one or more embodiments.

In one or more embodiments, the fourth paddle 206 moves backward and forward faster than the relative speed of the second pontoon 102, generating adequate rearward force to propel the watercraft 100 forward. When the second pontoon 102 moves forward, the fourth paddle 206 retracts upward into the second paddle cavity 202 to minimize friction. When the second pontoon 102 moves rearward, the fourth paddle 206 deploys downward to extend distally from the second paddle cavity 202 to create resistance with the water, contributing to the forward propulsion of the watercraft 100.

The propulsion mechanism 200 is operable to move the first paddle 203, the second paddle 205, the third paddle 204, and the fourth paddle 206 reciprocally when the first pontoon 101 and the second pontoon 102 move reciprocally relative to each other. The propulsion mechanism 200 drives the paddles 203,204,205,206 with a speed of movement greater than the speed of movement of the first pontoon 101 and the second pontoon 102, ensuring that the paddles generate sufficient rearward thrust to propel the watercraft 100 forward. This mechanism overcomes the limitation of inadequate forward propulsion seen in previous designs, enabling more efficient and effective movement on water.

The propulsion mechanism 200 translates the reciprocating motion of the pontoons 101,102 into a faster movement of the paddles, thereby generating forward thrust. This method ensures that the paddles 203,204,205,206 move at a speed greater than the pontoons 101,102, which provides effective propulsion. The increased speed of the paddles 203,204,205,206 relative to the pontoons 101,102 allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft 100.

The propulsion mechanism 200 drives the first paddle 203 and the second paddle 205 coupled to the underside of the first pontoon 101 and the third paddle 204 and the fourth paddle 206 coupled to the underside of the second pontoon 102 with a linear velocity greater than the linear velocity experienced by the pontoons 101,102 in one or more embodiments. This increased paddle speed relative to the pontoons 101,102 ensures that the paddles can push against the water with greater force, generating sufficient rearward thrust to propel the watercraft 100 forward.

As will be described below, in one or more embodiments a paddle retractor is operable to cause the first paddle 203 and the second paddle 205 to situate within the first paddle cavity 201 when the first pontoon 101 moves forward and to allow the first paddle 203 and the second paddle 205 to extend distally from the first paddle cavity 201 when the first pontoon 101 moves rearward. Similarly, another paddle retractor causes the third paddle 204 and the fourth paddle 206 to situate within the second paddle cavity 202 when the second pontoon 102 moves forward and to allow the third paddle 204 and the fourth paddle 206 to extend distally from the second paddle cavity 202 when the second pontoon 102 moves rearward.

In one or more embodiments, the paddle retractor comprises a torsion spring having a spring loop biased against the first paddle spacer and a spring arm biased against the first paddle 203. This configuration ensures that the paddles retract upwards when moving forward and deploy downwards when moving rearward, optimizing the propulsion process and reducing friction during forward motion. The other paddle retractors can be similarly configured.

In one or more embodiments, the propulsion mechanism 200 moves the paddles 203,204,205,206 via a first paddle set drive train 207 and a second paddle set drive train 208. In the illustrative embodiment of FIGS. 1-2, the first paddle 203 and the second paddle 205 are driven by the first paddle set drive train 207, while the third paddle 204, and fourth paddle 206 are driven by the second paddle set drive train 208. In one or more embodiments, the first paddle set drive train 207 moves the first paddle 203 and the second paddle 205 forward when the first pontoon 101 moves forward, and backward when the first pontoon 101 move backward. Similarly, the second paddle set drive train 208 drives the third paddle 204 and the fourth paddle 206 forward when the second pontoon 102 moves forward, and backward when the second pontoon 102 moves backward.

In effect, the first paddle set drive train 207 and the second paddle set drive train 208 move the first paddle 203 and second paddle 205, and the third paddle 204 and fourth paddle 206, reciprocally when the first pontoon 101 and the second pontoon 102 move reciprocally relative to each other. In one or more embodiments, the first paddle set drive train 207 and the second paddle set drive train 208 move the first paddle 203 and second paddle 205, and the third paddle 204 and fourth paddle 206, with a speed of movement that is greater than another speed of movement of the first pontoon 101 and the second pontoon 102 to provide forward thrust for the watercraft 100.

In one or more embodiments, the propulsion mechanism 200 can include a combination of cables, pulleys, gears, pinions, or belts. The propulsion mechanism 200 ensures that the paddles 203,204,205,206 generate adequate rearward force, propelling the watercraft 100 forward. In one or more embodiments, paddle movement is synchronized with the reciprocating motion of the pontoons 101,102, allowing for efficient translation of the user's walking motion into forward thrust.

The bottom perspective view of FIG. 2 also highlights the structural design of the pontoons 101,102, which are longer than they are wide in this illustrative embodiment. This streamlined shape facilitates movement through the water and provides stability to the watercraft 100. The overall design ensures that the watercraft 100 remains balanced and stable during operation, allowing the user to perform a walking motion on water effectively.

Turning now to FIG. 3, illustrated therein is the first pontoon 101 and the second pontoon 102 of the watercraft 100 in a configuration where the first pontoon 101 has moved forward relative to the second pontoon 102. In this configuration, the propulsion mechanism (200) drives the third paddle (204) and the fourth paddle (206) backward, while the first paddle (203) and the second paddle (205) move forward.

This reciprocal movement of the paddles (203,204,205,206) relative to the pontoons 101,102 ensures that the paddles (203,204,205,206) generate sufficient rearward thrust to propel the watercraft 100 forward. The first paddle (203) and the second paddle (205) retract upward, in one or more embodiments, into the first paddle cavity (201) to minimize friction during the forward motion of the first pontoon 101, while the third paddle (204) and the fourth paddle (206) deploy downward from the second paddle cavity (202) to create resistance with the water, resulting in forward propulsion.

FIG. 4 illustrates the opposite action, where the second pontoon 102 has moved forward relative to the first pontoon 101. In this configuration, the propulsion mechanism (200) drives the first paddle (203) and the second paddle (205) backward, while the third paddle (204) and the fourth paddle (206) move forward. The third paddle (204) and the fourth paddle (206) retract upward into the second paddle cavity (202) to minimize friction during the forward motion of the second pontoon 102, while the first paddle (203) and the second paddle (205) deploy downward from the first paddle cavity (201), in one or more embodiments, to create resistance with the water, resulting in forward propulsion. This reciprocal movement of the pontoons and paddles ensures continuous and effective propulsion of the watercraft 100 on water.

Turning now to FIG. 5, it can be seen that whichever pontoon 101,102 has a rearward motion, e.g., the first pontoon 101 in FIG. 2 as indicated by the dashed line arrows, the paddles 203,205 underneath this pontoon, will deploy downward and move back at a speed that exceeds the rearward motion of the corresponding pontoon 101. Conversely, the opposite pontoon 102 will have forward motion and the paddles 204,206 under this forward moving pontoon will move forward at a speed that exceeds the forward motion of the pontoon 102. Moreover, as shown with paddles 204,206, when moving forward, in one or more embodiments the paddles 204,206 will retract under that pontoon 102 to reduce friction. In one or more embodiments, the paddles 203,204,205,206 retract into either the first paddle cavity 201 or the second paddle cavity 202, as previously described.

Turning now to FIG. 6-10, illustrated therein are separate portions of the propulsion mechanism (200). FIG. 6 illustrates the watercraft (100) with the second pontoon 102 removed so that a first half of the propulsion mechanism (200) can be seen, while FIG. 7 illustrates the watercraft (100) with the first pontoon 101 removes so that a second half of the propulsion mechanism 200 can be seen.

FIG. 8 shows the underside of FIG. 7. FIG. 9 illustrates some portions of the propulsion mechanism (200), while FIG. 10 illustrates the propulsion mechanism (200) with the pontoons 101,102 completely removed for additional clarity.

In this illustrative embodiment, FIGS. 6-8 illustrate the detailed configuration and operation of a first embodiment of the propulsion mechanism (200) in the watercraft (100). In one or more embodiments, the propulsion mechanism (200) comprises a set of pulleys 301,302,701,702 and cables 303,703, which are positioned to harness the reciprocating movement of the pontoons 101,102. In one embodiment, two pulleys are positioned at the front and back of each pontoon, with a cable running around these pulleys.

Illustrating by example, in the illustrative embodiment of FIGS. 6-8, these components include the first pontoon 101, the second pontoon 102, the first paddle 203, the second paddle 205, the third paddle 204, the fourth paddle 206, the first pulley 301, the second pulley 302, the third pulley 701, the fourth pulley 702, the first cable 303, the second cable 703, the first paddle spacer 304, the second paddle spacer 704, the first paddle pivot 305, the second paddle pivot 306, the third paddle pivot 705, the fourth paddle pivot 706, the sliding male connector 307, and the female sliding connector receiver 707.

The first pontoon 101 and the second pontoon 102 are designed to provide buoyancy and stability to the watercraft (100). The first pontoon 101 houses the first paddle 203 and the second paddle 205, while the second pontoon 102 houses the third paddle 204 and the fourth paddle 206. The first pontoon 101 and the second pontoon 102 are positioned parallel to each other, enabling the user to perform a walking motion on water. This configuration ensures that the watercraft (100) remains balanced and stable during operation.

The first paddle 203 and the second paddle 205 are coupled to the first pontoon 101. The first paddle 203 and the second paddle 205 are situated within the first paddle cavity 201. The first paddle 203 and the second paddle 205 move backward and forward faster than the relative speed of the first pontoon 101, generating adequate rearward force to propel the watercraft (100) forward. When the first pontoon 101 moves forward, the first paddle 203 and the second paddle 205 retract upward into the first paddle cavity 201 to minimize friction. When the first pontoon 101 moves rearward, the first paddle 203 and the second paddle 205 deploy downward to create resistance with the water, contributing to the forward propulsion of the watercraft 100.

The third paddle 204 and the fourth paddle 206 are coupled to the second pontoon 102. The third paddle 204 and the fourth paddle 206 are situated within the second paddle cavity 202. The third paddle 204 and the fourth paddle 206 move backward and forward faster than the relative speed of the second pontoon 102, generating adequate rearward force to propel the watercraft (100) forward. When the second pontoon 102 moves forward, the third paddle 204 and the fourth paddle 206 retract upward into the second paddle cavity 202 to minimize friction. When the second pontoon 102 moves rearward, the third paddle 204 and the fourth paddle 206 deploy downward to create resistance with the water, contributing to the forward propulsion of the watercraft (100).

In this illustrative embodiment, the propulsion mechanism (200) comprises a set of pulleys and cables that harness the reciprocating movement of the pontoons 101,102. The first pulley 301 and the second pulley 302 are carried by the second pontoon 102, while the third pulley 701 and the fourth pulley 702 are carried by the first pontoon 101. The first cable 303 engages the first pulley 301 and the second pulley 302, and the second cable 703 engages the third pulley 701 and the fourth pulley 702. The first cable 303 is coupled to the third paddle 204 and the fourth paddle 206, while the second cable 703 is coupled to the first paddle 203 and the second paddle 205.

In one or more embodiments, a second paddle spacer 704 separates the first paddle 203 from the second paddle 205 and couples the first paddle 203 and the second paddle 205 to the first cable 303. Similarly, a second paddle spacer 704 separates the third paddle 204 from the fourth paddle 206 and couples the third paddle 204 and the fourth paddle 206 to the second cable 703. The first paddle spacer 304 and the second paddle spacer 704 ensure that the paddles move in synchronization with the reciprocating motion of the pontoons 101,102.

In one or more embodiments, a third paddle pivot 705 and a fourth paddle pivot 706 are coupled to the first paddle 203 and the second paddle 205, respectively. A first paddle pivot 305 and a second paddle pivot 306 are coupled to the third paddle 204 and the fourth paddle 206, respectively. These pivots allow the paddles to hinge and retract upward when moving forward and deploy downward when moving rearward, optimizing the propulsion process and reducing friction during forward motion.

In one or more embodiments, the sliding male connector 307 is coupled to one of the pontoons, which is the first pontoon 101 in this illustrative embodiment but could be the second pontoon 102 in other embodiments. Similarly, in one or more embodiments a female sliding connector receiver 707 is coupled to the other pontoon. In one or more embodiments, the sliding male connector 307 engages the female sliding connector receiver 707, facilitating the reciprocal movement of the pontoons 101,102 relative to each other. This configuration ensures that the pontoons 101m102 remain aligned and stable during operation, allowing for smooth and controlled reciprocating motion

The cables 303,703, connected to the paddles situated under each pontoon 101,102, ensure that the paddles 203,204,205,206 move in synchronization with the reciprocating motion of the pontoons 101,102. This configuration allows the paddles 203,204,205,206 to move backward and forward faster than the relative speed of the pontoons 101102, generating adequate rearward force and improved net forward movement.

While cables and pullies are used in FIGS. 6-8, as will be described below embodiments of the disclosure are not so limited. In another embodiment, the propulsion mechanism (200) utilizes a rack and pinion gear system. The gear on one pontoon meshes with a linear rack on the opposite pontoon. When reciprocating movement is performed, this rotates the gear, which then meshes with another linear pinion attached to the paddle spacer. This configuration also moves the paddles rearward at a faster speed than the pontoon they are associated with. Conversely, the paddles under the pontoon that is moving forward will be moving forward at a faster speed relative to the associated pontoon. This ensures that the paddles generate sufficient rearward thrust to propel the watercraft forward.

In one or more embodiments, the paddle spacers 304,704 ensure that the paddles 203,204,205,206 move with the same direction and speed. In one or more embodiments, the paddle spacers 304,704 are affixed to their corresponding cables 303,703 that run around the pulleys 301,302,701,702, thereby ensuring that the paddles 203,204,205,206 move in synchronization with the reciprocating motion of the pontoons 101,102. In one or more embodiments, the paddle spacers 304,704 are further stabilized by a cross-shaped track with possible use of roller bearings, bushings, or other linear motion tracks. This configuration ensures smooth and controlled movement of the paddles 203,204,205,206, optimizing the propulsion process and enhancing the overall performance of the watercraft (100).

In one or more embodiments, each cable 303,703 attaches to the opposite pontoon 101,102 via a cable attachment point 1001,1002. In one or more embodiments, the first cable attachment point 1001 and the second cable attachment point 1002 attach the cables 303,703 to the opposite pontoon 101,102, respectively.

The cable attachment points 1001,1002 can attach to the pontoons using various methods, each offering distinct characteristics. One method involves using mechanical fasteners such as screws or bolts. This approach provides a secure and robust connection, ensuring that the cables remain firmly attached to the pontoons during operation. Mechanical fasteners can be easily installed and removed, allowing for straightforward maintenance and adjustments. Additionally, this method allows for the use of corrosion-resistant materials such as stainless steel or aluminum, which are suitable for prolonged exposure to water environments.

Another method for attaching the cable attachment points 1001,1002 to the pontoons involves adhesive bonding. This technique uses high-strength adhesives to create a strong bond between the cable attachment points and the pontoons. Adhesive bonding distributes the load evenly across the attachment area, reducing stress concentrations and potential points of failure. This method also provides a smooth and seamless connection, minimizing any protrusions that could interfere with the watercraft's operation. Adhesive bonding is particularly advantageous for materials that are difficult to fasten mechanically, such as certain plastics or composites.

A third method involves using integrated molding techniques, where the cable attachment points 1001,1002 are molded directly into the pontoons during the manufacturing process. This approach creates a permanent and highly durable connection, as the attachment points become part of the pontoon structure. Integrated molding ensures precise alignment and positioning of the cable attachment points, enhancing the overall performance and reliability of the propulsion mechanism. This method is particularly suitable for pontoons made from materials such as rotationally molded plastics or fiberglass composites.

Each of these methods offers benefits, and the choice of attachment method can be tailored to meet performance requirements and environmental conditions. Mechanical fasteners provide ease of maintenance and adjustability, adhesive bonding offers a smooth and seamless connection, and integrated molding ensures a permanent and precise attachment. The selection of the appropriate method will depend on factors such as the materials used for the pontoons, the desired strength and durability of the connection, and the operational requirements of the watercraft.

In one or more embodiments, the first cable attachment points 1001 secure the second cable 703 to the second pontoon 102 and the first cable 303 to the first pontoon 101, while the second cable attachment points 1002 do the same. This configuration ensures that the cables 303,703 are anchored to the pontoons 101,102 in a manner that allows for effective translation of the pontoons' reciprocating motion into rotational motion of the pulleys 301,302,701,702. A cable retainer 901 or other mechanical device can serve as attachments for the cable attachment points 1001,1002.

When the second pontoon 102 moves forward, the second cable 703 translates this forward motion to the pulleys 701,702 carried by the first pontoon 101. This translation causes the pulleys 701,702 to rotate, driving the paddles 203,205 backward. Conversely, when the first pontoon 101 moves forward, the first cable 303 translates this motion to pulleys 301,302.

This arrangement ensures that the translation of the pontoons 101,102 effectively translates the cable attachment points 1001,1002, causing the pulleys 301,302,701,702 to rotate. This rotational motion of the pulleys 301,302,701,702 drives the paddles 203,204,205,206, ensuring that the paddles move with a speed greater than the speed of the pontoons 101,102. This mechanism generates sufficient rearward thrust to propel the watercraft forward, optimizing the propulsion process and enhancing the overall performance of the watercraft (100).

Turning now to FIG. 11, illustrated therein is a detailed view of one explanatory paddle assembly in accordance with one or more embodiments of the disclosure. The third paddle 204 and the fourth paddle 206 are shown in this figure, although the first paddle (203) and second paddle (205) could be similarly configured and are in one or more embodiments.

As noted above, in one or more embodiments the third paddle 204 is coupled to the second pontoon (102) and is situated within the second paddle cavity (202). The third paddle 204 is designed to move backward and forward faster than the relative speed of the second pontoon (102). When the second pontoon (102) moves forward, the third paddle 204 retracts upward into the second paddle cavity (202) to reduce friction. When the second pontoon (102) moves rearward, the third paddle 204 deploys downward to create resistance with the water, resulting in forward propulsion.

Similarly, the fourth paddle 206 is also coupled to the second pontoon (102) and is situated within the second paddle cavity (202). The fourth paddle 206 works in tandem with the third paddle 204 as part of the propulsion mechanism (200). The fourth paddle 206 moves backward and forward faster than the relative speed of the second pontoon (102), generating adequate rearward force to propel the watercraft (100) forward. When the second pontoon (102) moves forward, the fourth paddle 206 retracts upward into the second paddle cavity (202) to minimize friction. When the second pontoon (102) moves rearward, the fourth paddle 206 deploys downward to create resistance with the water, contributing to the forward propulsion of the watercraft (100).

In the illustrative embodiment of FIG. 11, the first paddle spacer 304 separates the third paddle 204 from the fourth paddle 206 and couples the third paddle 204. As previously described, in one or more embodiments the first paddle spacer 304 couples the third paddle 204 the fourth paddle 206 to the first cable 303.

In one or more embodiments, the first paddle spacer 304 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons (101, 102). The first paddle spacer 304 is situated in, and moveable within by the propulsion mechanism (200), the second paddle cavity (202). The first paddle spacer 304 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons 101,102, allowing for efficient translation of the user's walking motion into forward thrust.

In one or more embodiments, the first paddle spacer 304 comprises a first paddle pivot 305 and the second paddle pivot 306 are coupled to the third paddle 204 and the fourth paddle 206, respectively. In one or more embodiments, these pivots 305,306 allow the paddles 204,206 to hinge and retract upward when moving forward and deploy downward when moving rearward, optimizing the propulsion process and reducing friction during forward motion. The first paddle pivot 305 and the second paddle pivot 306 ensure that the paddles can move backward and forward faster than the relative speed of the pontoons 101,102, generating adequate rearward force to propel the watercraft 100 forward.

The first paddle pivot 305 and the second paddle pivot 306 can be constructed using various materials and methods, each offering distinct characteristics. One option involves using stainless steel, which provides high strength and corrosion resistance, making stainless steel suitable for prolonged exposure to water environments. Stainless steel pivots can withstand significant mechanical stress and are less likely to degrade over time, ensuring long-term reliability and durability. Another option is to use aluminum, which is lightweight and also offers good corrosion resistance. Aluminum pivots can reduce the overall weight of the watercraft, making the watercraft easier to maneuver and transport. Additionally, aluminum can be anodized to enhance the surface hardness and resistance to wear.

Alternatively; the pivots can be constructed from high-strength polymers such as nylon or polyoxymethylene (POM). These materials are lightweight, resistant to corrosion, and can provide smooth operation due to their low friction coefficients. Polymer pivots can be molded into complex shapes, allowing for precise and consistent manufacturing. Furthermore, polymers can absorb some of the mechanical vibrations and shocks, potentially enhancing the comfort and stability of the watercraft during use. Each of these construction options offers benefits, and the choice of material can be tailored to meet specific performance requirements and environmental conditions.

In one or more embodiments, a first paddle retaining roller 1101 and a second paddle retaining roller 1102 are coupled to the first paddle spacer 304. As will be described below with reference to FIG. 12, in one or more embodiments the first paddle retaining roller 1101 and the second paddle retaining roller 1102 are situated within a paddle retaining roller receiver of the second pontoon (102).

In one or more embodiments, these rollers reduce friction and ensure smooth movement of the paddle spacer within the paddle cavity. The first paddle retaining roller 1101 and the second paddle retaining roller 1102 help to maintain the alignment of the paddles, preventing any lateral movement that could destabilize the watercraft. The first paddle retaining roller 1101 and the second paddle retaining roller 1102 ensure that the paddles remain securely coupled and aligned during operation, allowing for smooth and controlled reciprocating motion.

Turning now to FIG. 12, illustrated therein is one explanatory paddle retaining roller receiver 1200. The assembly of FIG. 11 is shown engaging this paddle retaining roller receiver 1200.

As shown, the first paddle retaining roller 1101 is coupled to the first paddle spacer 304. The first paddle retaining roller 1101 is designed to reduce friction and ensure smooth movement of the first paddle spacer 304 within the paddle retaining roller receiver 1200. The first paddle retaining roller 1101 helps to maintain the alignment of the paddles 204, preventing any lateral movement that could destabilize the watercraft. The first paddle retaining roller 1101 ensures that the paddles 204 remain securely coupled and aligned during operation, allowing for smooth and controlled reciprocating motion.

The first paddle retaining roller support surface 1201 is situated within the paddle retaining roller receiver 1200. The first paddle retaining roller support surface 1201 provides a stable base for the first paddle retaining roller 1101, ensuring that the roller can move smoothly and efficiently. The first paddle retaining roller support surface 1201 helps to reduce friction and wear on the roller, enhancing the overall performance and durability of the propulsion mechanism (200).

The second paddle retaining roller support surface 1202 is also situated within the paddle retaining roller receiver 1200. The second paddle retaining roller support surface 1202 works in conjunction with the first paddle retaining roller support surface 1201 to provide a stable and smooth path for the paddle retaining rollers. The second paddle retaining roller support surface 1202 ensures that the rollers can move efficiently, reducing friction and wear, and maintaining the alignment of the paddles during operation.

The third paddle retaining roller support surface 1203 is another component situated within the paddle retaining roller receiver 1200. The third paddle retaining roller support surface 1203 provides additional support and stability for the paddle retaining rollers. The third paddle retaining roller support surface 1203 helps to ensure that the rollers can move smoothly and efficiently, reducing friction and wear, and maintaining the alignment of the paddles during operation.

The fourth paddle retaining roller support surface 1204 is also situated within the paddle retaining roller receiver 1200. The fourth paddle retaining roller support surface 1204 works in conjunction with the other support surfaces to provide a stable and smooth path for the paddle retaining rollers. The fourth paddle retaining roller support surface 1204 ensures that the rollers can move efficiently, reducing friction and wear, and maintaining the alignment of the paddles during operation.

The first paddle retaining roller bounding wall 1205 is situated within the paddle retaining roller receiver 1200. The first paddle retaining roller bounding wall 1205 provides a boundary for the first paddle retaining roller 1101, ensuring that the roller remains within the designated path. The first paddle retaining roller bounding wall 1205 helps to maintain the alignment of the paddles and prevent any lateral movement that could destabilize the watercraft (100).

The second paddle retaining roller bounding wall 1206 is also situated within the paddle retaining roller receiver 1200. The second paddle retaining roller bounding wall 1206 provides a boundary for the paddle retaining rollers, ensuring that the rollers remain within the designated path. The second paddle retaining roller bounding wall 1206 helps to maintain the alignment of the paddles and prevent any lateral movement that could destabilize the watercraft (100).

Turning now to FIGS. 13-14, illustrated therein is the second pontoon 102 with the female sliding connector receiver 707 attached thereto. In this illustrative embodiment, the female sliding connector receiver 707 is attached to a vertical minor surface of the second pontoon 102. While attached to the second pontoon 102 in this illustrative embodiment, the female sliding connector receiver 707 could be coupled to the first pontoon (101) in other embodiments.

In one or more embodiments, the female sliding connector receiver 707 defines a rail or track system along one side of a pontoon. The rail structure defined by the female sliding connector receiver 707, which can be constructed from metal, polymer, or other materials, features a linear slit along the longitudinal axis facing the opposite pontoon in one or more embodiments. In one or more embodiments, the female sliding connector receiver 707 has a square cross-sectional design. However, it will be obvious to those of ordinary skill in the art having the benefit of this disclosure that other geometries such as rectangular or any other shape could be utilized if warranted.

While the female sliding connector receiver 707 of the illustrative embodiment of FIGS. 13-14 employs linear rails, curved rails could also be used in other embodiments. Embodiments of the disclosure contemplate that curved rails may improve the smoothness of operation when walking on water. Stand-up paddleboards, surfboards, and other water devices often have curved bottoms. Using curved rails for the female sliding connector receiver 707 to match or nearly match this curvature can therefore be used in other embodiments. Alternative linear or curved rail designs are possible, and rollers (shown below with reference to the sliding male connector of FIG. 15) may not be necessary. An alternative design could employ linear rails without bearings, which may be single or dual rails of various geometries. For example, two round cross-section rails could be used on one pontoon, with a sliding mechanism that attaches to these rails on the other pontoon.

Turning now to FIG. 15, illustrated therein is the first pontoon 101 with the sliding male connector 307 attached to a minor surface of the first pontoon 101. The sliding male connector 307 is coupled to the first pontoon 101 and plays a role in the sliding rail system that slidably couples the first pontoon 101 to the second pontoon. The sliding male connector 307 engages a female sliding connector receiver (707), which is coupled to the second pontoon (102). This engagement facilitates the reciprocal movement of the pontoons relative to each other, ensuring that the pontoons remain aligned and stable during operation. The sliding male connector 307 is designed to move smoothly within the female sliding connector receiver, reducing friction and maintaining the alignment of the pontoons. The sliding male connector 307 may include rollers as shown in FIG. 15 that engage inner surfaces of the female sliding connector receiver (707), further enhancing the smoothness and stability of the sliding mechanism. This configuration allows for controlled reciprocating motion, which is required for maintaining balance and effective propulsion on water.

In one or more embodiments, the sliding male connector 307 comprises rollers such that the sliding male connector 307 defines a T-shaped structure. In one or more embodiments, this T-shaped structure defined by the rollers maintains the sliding male connector 307 in stable alignment relative to the female sliding connector receiver (707) while still allowing the sliding male connector 307 to roll back and forth relative to the female sliding connector receiver (707). In the illustrative embodiment of FIG. 15, the sliding male connector 307 comprises two horizontal rollers and four vertical rollers, but other numbers of rollers are possible as will be obvious to those of ordinary skill in the art having the benefit of this disclosure.

Turning now to FIGS. 16-19, illustrated therein are various views of the sliding male connector 307 engaging the female sliding connector receiver 707. As shown, the sliding male connector 307 is a component in the watercraft's sliding rail system, which facilitates the reciprocal movement of the pontoons relative to each other.

In this illustrative embodiment, the sliding male connector 307 engages the female sliding connector receiver 707, allowing for smooth and controlled reciprocating motion. The sliding male connector 307 is designed to move within the female sliding connector receiver 707, reducing friction and maintaining the alignment of the pontoons. The sliding male connector 307 may include rollers, one example of which is the front sliding male connector roller 1901, that engage inner surfaces of the female sliding connector receiver 707, further enhancing the smoothness and stability of the sliding mechanism.

In this illustrative embodiment, the female sliding connector receiver 707 defines a rail or track system along one side of the pontoon. The rail structure features a linear slit along the longitudinal axis facing the opposite pontoon. The female sliding connector receiver 707 can be constructed from various materials, including metal, polymer, or other suitable materials. The design of the female sliding connector receiver 707 ensures that the sliding male connector 307 can move smoothly within the female sliding connector receiver 707, reducing friction and maintaining the alignment of the pontoons. The female sliding connector receiver 707 may have a square cross-sectional design, but other geometries such as rectangular or any other shape could be utilized if warranted.

The front sliding male connector roller 1901 is coupled to the sliding male connector 307. The front sliding male connector roller 1901 engages the inner surfaces of the female sliding connector receiver 707, reducing friction and ensuring smooth movement of the sliding male connector 307 within the female sliding connector receiver 707. The front sliding male connector roller 1901 helps to maintain the alignment of the pontoons, preventing any lateral movement that could destabilize the watercraft. The front sliding male connector roller 1901 ensures that the sliding male connector 307 remains securely coupled and aligned during operation, allowing for smooth and controlled reciprocating motion.

In the illustrative embodiment of FIGS. 16-19, the sliding male connector 307 comprises a plurality of rollers that engage inner surfaces of the female sliding connector receiver 707. Turning now to FIGS. 20-23, illustrated therein are some of these rollers.

As shown in these figures, the sliding male connector 307 is coupled to the first pontoon 101. The first pontoon 101 is a primary component of the watercraft, designed to provide buoyancy and stability. The first pontoon 101 is configured to move reciprocally relative to a second pontoon, facilitating the manual propulsion mechanism. The first pontoon 101 houses various components that contribute to the overall functionality of the watercraft, including the sliding male connector 307 and associated rollers.

The sliding male connector 307 is coupled to the first pontoon 101 and plays a role in the sliding rail system that slidably couples the first pontoon 101 to the second pontoon. The sliding male connector 307 engages a female sliding connector receiver (707), which is coupled to the second pontoon (102). This engagement facilitates the reciprocal movement of the pontoons relative to each other, ensuring that the pontoons remain aligned and stable during operation.

The sliding male connector 307 is designed to move smoothly within the female sliding connector receiver (707), reducing friction and maintaining the alignment of the pontoons. The sliding male connector 307 may include rollers that engage inner surfaces of the female sliding connector receiver (707), further enhancing the smoothness and stability of the sliding mechanism. This configuration allows for controlled reciprocating motion, which is required for maintaining balance and effective propulsion on water.

The sliding male connector rollers can be manufactured from various materials, each offering distinct characteristics. One option involves using stainless steel, which provides high strength and corrosion resistance, making stainless steel suitable for prolonged exposure to water environments. Stainless steel rollers can withstand significant mechanical stress and are less likely to degrade over time, ensuring long-term reliability and durability.

Another option is to use aluminum, which is lightweight and also offers good corrosion resistance. Aluminum rollers can reduce the overall weight of the watercraft, making the watercraft easier to maneuver and transport. Additionally, aluminum can be anodized to enhance the surface hardness and resistance to wear.

Alternatively, the rollers can be constructed from high-strength polymers such as nylon or polyoxymethylene (POM). These materials are lightweight, resistant to corrosion, and can provide smooth operation due to their low friction coefficients. Polymer rollers can be molded into complex shapes, allowing for precise and consistent manufacturing. Furthermore, polymers can absorb some of the mechanical vibrations and shocks, potentially enhancing the comfort and stability of the watercraft during use. Each of these construction options offers benefits, and the choice of material can be tailored to meet specific performance requirements and environmental conditions.

The front sliding male connector roller 1901 is coupled to the sliding male connector 307. The front sliding male connector roller 1901 engages the inner surfaces of the female sliding connector receiver (707), reducing friction and ensuring smooth movement of the sliding male connector 307 within the female sliding connector receiver. The front sliding male connector roller 1901 helps to maintain the alignment of the pontoons, preventing any lateral movement that could destabilize the watercraft. The front sliding male connector roller 1901 ensures that the sliding male connector 307 remains securely coupled and aligned during operation, allowing for smooth and controlled reciprocating motion.

The rear sliding male connector roller 2001 is another roller coupled to the sliding male connector 307. The rear sliding male connector roller 2001 works in conjunction with the front sliding male connector roller 1901 to provide a stable and smooth path for the sliding male connector 307 within the female sliding connector receiver (707). The rear sliding male connector roller 2001 ensures that the sliding male connector 307 can move efficiently, reducing friction and wear, and maintaining the alignment of the pontoons during operation.

The front sliding male connector stabilization roller 2101 is coupled to the sliding male connector 307 and engages other inner surfaces of the female sliding connector receiver (707). The front sliding male connector stabilization roller 2101 provides additional support and stability to the sliding connector, ensuring that the pontoons remain securely coupled and aligned during operation. The front sliding male connector stabilization roller 2101 helps to prevent any lateral movement that could destabilize the watercraft, allowing for smooth and controlled reciprocating motion.

The rear sliding male connector stabilization roller 2102 is also coupled to the sliding male connector 307 and engages other inner surfaces of the female sliding connector receiver. The rear sliding male connector stabilization roller 2102 works in conjunction with the front sliding male connector stabilization roller 2101 to provide a stable and smooth path for the sliding male connector 307 within the female sliding connector receiver. The rear sliding male connector stabilization roller 2102 ensures that the sliding male connector 307 can move efficiently, reducing friction and wear, and maintaining the alignment of the pontoons during operation.

Now that the components of one explanatory propulsion mechanism (200) have been described, attention will be turned to how these elements are combined and integrated into a watercraft. Turning now to FIGS. 24-26, illustrated therein is one explanatory assembly.

As shown, the first pulley 301 is positioned such that it would situate at the front of the second pontoon (102). The first pulley 301 plays a role in the propulsion mechanism 200 by guiding the first cable 303. The first pulley 301 is designed to rotate smoothly, allowing the first cable 303 to move efficiently. The first pulley 301 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The first pulley 301 is positioned to optimize the translation of the reciprocating motion of the pontoons 101,102 into the movement of the paddles 203,204,205,206.

The second pulley 302 is positioned to situate at the rear of the second pontoon (102). The second pulley 302 works in conjunction with the first pulley 301 to guide the first cable 303. The second pulley 302 is designed to rotate smoothly, ensuring that the first cable 303 moves efficiently. The second pulley 302 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The second pulley 302 is positioned to optimize the translation of the reciprocating motion of the pontoons (101,102) into the movement of the paddles 203,204,205,206.

The first cable 303 engages the first pulley 301 and the second pulley 302. The first cable 303 is responsible for transmitting the reciprocating motion of the pontoons (101, 102) to the paddles 203,204,205,206. The first cable 303 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The first cable 303 is positioned to optimize the translation of the reciprocating motion of the pontoons (101,102) into the movement of the paddles 203,204,205,206.

The first paddle 203 and the second paddle 205, when implemented in a watercraft, situate beneath the first pontoon (101). The first paddle 203 and the second paddle 205 are designed to move backward and forward faster than the relative speed of the first pontoon (101), generating adequate rearward force to propel the watercraft (100) forward. When the first pontoon (101) moves forward, the first paddle 203 and the second paddle 205 retracts upward into the first paddle cavity (201) to minimize friction. When the first pontoon (101) moves rearward, the first paddle 203 and the second paddle 205 deploy downward to create resistance with the water, contributing to the forward propulsion of the watercraft 100.

The first paddle spacer 304 separates the third paddle 204 from the fourth paddle 206 and couples the third paddle 204 from the fourth paddle 206 to the first cable 303. The first paddle spacer 304 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons (101,102). The first paddle spacer 304 is situated in, and moveable within by the propulsion mechanism (200), the second paddle cavity (202). The first paddle spacer 304 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons (101,102), allowing for efficient translation of the user's walking motion into forward thrust.

The third paddle 204 and the fourth paddle 206 is situated beneath the second pontoon 102. The third paddle 204 and the fourth paddle 206 are designed to move backward and forward faster than the relative speed of the second pontoon (102), generating adequate rearward force to propel the watercraft (100) forward. When the second pontoon (102) moves forward, the third paddle 204 and the fourth paddle 206 retract upward into the second paddle cavity (202) to minimize friction. When the second pontoon (102) moves rearward, the third paddle 204 and the fourth paddle 206 deploy downward to create resistance with the water, contributing to the forward propulsion of the watercraft (100).

The third pulley 701 is positioned at the front of the first pontoon (101). The third pulley 701 plays a role in the propulsion mechanism 200 by guiding the second cable 703. The third pulley 701 is designed to rotate smoothly, allowing the second cable 703 to move efficiently. The third pulley 701 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The third pulley 701 is positioned to optimize the translation of the reciprocating motion of the pontoons 101,102 into the movement of the paddles 203,204,205,206.

The fourth pulley 702 is positioned at the rear of the first pontoon 101. The fourth pulley 702 works in conjunction with the third pulley 701 to guide the second cable 703. The fourth pulley 702 is designed to rotate smoothly, ensuring that the second cable 703 moves efficiently. The fourth pulley 702 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The fourth pulley 702 is positioned to optimize the translation of the reciprocating motion of the pontoons (101,102) into the movement of the paddles 203,204,205,206.

The second cable 703 engages the third pulley 701 and the fourth pulley 702. The second cable 703 is responsible for transmitting the reciprocating motion of the pontoons (101,102) to the paddles 203,204,205,206. The second cable 703 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The second cable 703 is positioned to optimize the translation of the reciprocating motion of the pontoons (101,102) into the movement of the paddles 203,204,205,206.

The first paddle 203 and the second paddle 205 are situated beneath the first pontoon (101). The first paddle 203 and the second paddle 205 are designed to move backward and forward faster than the relative speed of the first pontoon (101), generating adequate rearward force to propel the watercraft 100 forward. When the first pontoon (101) moves forward, the first paddle 203 and the second paddle 205 retract upward into the first paddle cavity (201) to minimize friction. When the first pontoon (101) moves rearward, the first paddle 203 and the second paddle 205 deploy downward to create resistance with the water, contributing to the forward propulsion of the watercraft (100).

The second paddle spacer 704 separates the first paddle 203 from the second paddle 205 and couples the first paddle 203 and the second paddle 205 to the second cable 703. The second paddle spacer 704 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons (101,102). The second paddle spacer 704 is situated in, and moveable within by the propulsion mechanism (200), the first paddle cavity (201). The second paddle spacer 704 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons (101,102), allowing for efficient translation of the user's walking motion into forward thrust.

As best seen in FIG. 26, in one or more embodiments the first cable 303 and the second cable 703, as well as their corresponding pulleys 301,302,701,702, are offset to prevent mechanical interference during their motion. This offset ensures that the cables 303,703 and pulleys 301,302,701,702 can move freely without entangling or obstructing each other, which is necessary for the smooth operation of the propulsion mechanism (200). The offset configuration allows the first cable 303 to engage the first pulley 301 and the second pulley 302 carried by the second pontoon (102), while the second cable 703 engages the third pulley 701 and the fourth pulley 702 carried by the first pontoon (101). This arrangement ensures that the cables can transmit the reciprocating motion of the pontoons to the paddles 203,204,205,206 without any mechanical hindrance.

When the cables are offset, the depths of the first paddle spacer 304 and the second paddle spacer 704 may need to be different to ensure that the paddles 203,204,205,206 situate at the same depth within the water. This adjustment is necessary to maintain the linear motion of the watercraft. The first paddle spacer 304, which couples the third paddle 204 and the fourth paddle 206 to the first cable 303, may be positioned at a different depth compared to the second paddle spacer 704, which couples the first paddle 203 and the second paddle 205 to the second cable 703. This depth adjustment ensures that all paddles are aligned correctly within the water, providing consistent and effective propulsion for the watercraft. Turning now to FIG. 27, illustrated therein is the first cable 303 attached to the first pontoon 101 with the corresponding pulleys 301,302 at a shallower depth than the second cable 703, further illustrating the vertical offset shown previously in FIGS. 24 and 26.

Turning now to FIGS. 28-33, illustrated therein is a watercraft comprising a pair of flotation pontoons 101,102. In one or more embodiments, the watercraft comprises paddles 203,204,205,206 slidably coupled under the pair of flotation pontoons 101,102. In one or more embodiments, a propulsion mechanism (shown in FIG. 32) is configured to harness a reciprocating motion of the pair of pontoons 101,102 to drive the paddles 203,204,205,206 under the pair of flotation pontoons 101,102 faster than the motion of the pair of flotation pontoons 101,102 when moving with a reciprocal motion relative to each other.

As shown in FIG. 33, in one or more embodiments a sliding rail system is configured to slidably couple the pair of flotation pontoons 101,102 together. As will be described below with reference to FIGS. 44-50, in one or more embodiments the watercraft comprises a paddle retraction mechanism.

In one or more embodiments, the paddle retraction mechanism is configured to pivot the paddles 203,204,205,206 upward when moving forward and deploy the paddles 203,204,205,206 downward when moving rearward. The propulsion mechanism translates the reciprocating motion of the pontoons 101,102 into a faster movement of the paddles 203,204,205,206, thereby generating forward thrust. This ensures that the paddles 203,204,205,206 move at a speed greater than the pontoons 101,102, which provides effective propulsion. The increased speed of the paddles 203,204,205,206 relative to the pontoons 101,102 allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft.

In one or more embodiments, the first flotation pontoon 101 of the pair of flotation pontoons 101,102 defines a first paddle cavity, and the second flotation pontoon of the pair of flotation pontoons defines a second paddle cavity. These cavities are best seen in FIG. 30.

In one or more embodiments the paddles 203,204,205,206 comprise a first paddle 203 and a second paddle 205 coupled under the first flotation pontoon 101, and a third paddle 204 and a fourth paddle 206 coupled under the second flotation pontoon 102. In one or more embodiments, the paddle retraction mechanism comprises a first paddle retractor causing the first paddle 203 and the second paddle 205 to situate within the first paddle cavity when the first flotation pontoon 101 moves forward while deploying when the first flotation pontoon 101 moves backward. In one or more embodiments a second paddle retractor causes the third paddle 204 and the fourth paddle 206 to situate within the second paddle cavity when the second flotation pontoon 102 moves forward while deploying when the second flotation pontoon 102 moves backward. This configuration ensures that the paddles 203,204,205,206 generate sufficient rearward thrust to propel the watercraft forward, optimizing the propulsion process and enhancing the overall performance of the watercraft.

In one or more embodiments, the propulsion mechanism comprises a set of pulleys and cables, as previously described. As will be described below, these pulleys and cables can be replaced with gears and pinions, or belts and gears. Regardless of configuration, in one or more embodiments the propulsion mechanism is configured to translate the paddles 203,204,205,206 under the pair of flotation pontoons 101,102 faster than the motion of the pair of flotation pontoons 101,102 with a reciprocating movement, thereby generating forward thrust for the watercraft.

In one or more embodiments, the propulsion mechanism's ability to move the paddles 203,204,205,206 at a speed greater than the pontoons' movement speed ensures that the paddles 203,204,205,206 can push against the water with greater force, resulting in a more efficient translation of the user's walking motion into forward movement. This mechanism overcomes the limitation of inadequate forward propulsion seen in previous designs, enabling more efficient and effective movement on water.

Turning now to FIGS. 35-43, illustrated therein is one explanatory alternate propulsion mechanism 3400 that can be substituted for the pulley and cable system previously described. In one or more embodiments, the propulsion mechanism 3400 is a component of the watercraft, designed to harness the reciprocating motion of the pontoons to drive the paddles 203,204,205,206. The propulsion mechanism 3400 translates the linear motion of the pontoons 101,102 into a faster movement of the paddles 203,204,205,206, thereby generating forward thrust. This mechanism ensures that the paddles 203,204,205,206 move at a speed greater than the pontoons, providing effective propulsion. The increased speed of the paddles 203,204,205,206 relative to the pontoons 101,102 allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft.

The propulsion mechanism 3400 includes several components: the first paddle 203, the second paddle 205, the third paddle 204, the fourth paddle 206, the first paddle spacer 304, the first gear 3401, the first rack 3402, the second rack 3403, the second gear 4101, the third rack 4102, the fourth rack 4103, and the second paddle spacer 704.

The first paddle 203 and the second paddle 205 are coupled to the first pontoon 101 and are designed to move backward and forward faster than the relative speed of the first pontoon 101. When the first pontoon 101 moves forward, the first paddle 203 and the second paddle 205 retract upward to minimize friction. When the first pontoon 101 moves rearward, the first paddle 203 and the second paddle 205 deploy downward to create resistance with the water, resulting in forward propulsion. The first paddle 203 and the second paddle 205 can be constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The first paddle 203 and the second paddle 205 can be positioned to optimize the translation of the reciprocating motion of the pontoons 101,102 into forward thrust.

The third paddle 204 is coupled to the second pontoon 102 and is designed to move backward and forward faster than the relative speed of the second pontoon 102. When the second pontoon 102 moves forward, the third paddle 204 retracts upward to minimize friction. When the second pontoon 102 moves rearward, the third paddle 204 deploys downward to create resistance with the water, resulting in forward propulsion. The third paddle 204 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The third paddle 204 is positioned to optimize the translation of the reciprocating motion of the pontoons into forward thrust.

The fourth paddle 206 is also coupled to the second pontoon 102 and works in conjunction with the third paddle 204. The fourth paddle 206 is designed to move backward and forward faster than the relative speed of the second pontoon 102. When the second pontoon 102 moves forward, the fourth paddle 206 retracts upward to minimize friction. When the second pontoon 102 moves rearward, the fourth paddle 206 deploys downward to create resistance with the water, resulting in forward propulsion. The fourth paddle 206 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The fourth paddle 206 is positioned to optimize the translation of the reciprocating motion of the pontoons into forward thrust.

The first paddle spacer 304 separates the third paddle 204 from the fourth paddle 206 and couples the third paddle 204 and the fourth paddle 206 to the propulsion mechanism 3400. The first paddle spacer 304 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons 101,102. The first paddle spacer 304 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the first paddle spacer 304 ensures that the paddles 204,206 move in synchronization with the reciprocating motion of the pontoons 101,102, optimizing the propulsion process and enhancing the overall performance of the watercraft.

The first gear 3401 is a part of the propulsion mechanism 3400. The first gear 3401 is carried by one of the pontoons and engages with the first rack 3402 and the second rack 3403. The first gear 3401 is designed to rotate when the pontoons 101,102 move reciprocally relative to each other. This rotation translates the linear motion of the pontoons 101,102 into the movement of the paddles 203,204,205,206. The first gear 3401 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the first gear 3401 optimizes the translation of the reciprocating motion of the pontoons 101,102 into the movement of the paddles 203,204,205,206.

The first rack 3402 is coupled to at least one paddle and works in conjunction with the first gear 3401. The first rack 3402 is designed to move linearly when the first gear 3401 rotates. This linear movement drives the paddles 203,205 backward and forward faster than the relative speed of the pontoons 101,102, generating adequate rearward force to propel the watercraft forward. The first rack 3402 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The first rack 3402 is positioned to optimize the translation of the reciprocating motion of the pontoons into the movement of the paddles 203,205.

The second rack 3403 is coupled to the second pontoon 102 and also engages with the first gear 3401. The second rack 3403 works in tandem with the first rack 3402 to ensure that the paddles move in synchronization with the reciprocating motion of the pontoons. The second rack 3403 is designed to move linearly when the first gear 3401 rotates, contributing to the effective propulsion of the watercraft. The second rack 3403 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the second rack 3403 ensures that the translation of the reciprocating motion of the pontoons 101,102 into the movement of the paddles 203,205 is optimized.

The second gear 4101 is another component of the propulsion mechanism 3400. The second gear 4101 is carried by the second pontoon and engages with the third rack 4102 and the fourth rack 4103. The second gear 4101 is designed to rotate when the pontoons 101,102 move reciprocally relative to each other. This rotation translates the linear motion of the pontoons 101,102 into the movement of the paddles 203,204,205,206. The second gear 4101 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the second gear 4101 optimizes the translation of the reciprocating motion of the pontoons into the movement of the paddles 203,204,205,206.

The fourth rack 4103 is coupled to at least one other paddle and works in conjunction with the second gear 4101. The fourth rack 4103 is designed to move linearly when the second gear 4101 rotates. This linear movement drives the paddles 204,206 backward and forward faster than the relative speed of the pontoons 101,102, generating adequate rearward force to propel the watercraft forward. The fourth rack 4103 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The fourth rack 4103 is positioned to optimize the translation of the reciprocating motion of the pontoons into the movement of the paddles 204,206.

The third rack 4102 is coupled to the first pontoon 101 and also engages with the second gear 4101. The third rack 4102 works in tandem with the fourth rack 4103 to ensure that the paddles 204,206 move in synchronization with the reciprocating motion of the pontoons 101,102. The fourth rack 4103 is designed to move linearly when the second gear 4101 rotates, contributing to the effective propulsion of the watercraft. The fourth rack 4103 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the fourth rack 4103 ensures that the translation of the reciprocating motion of the pontoons into the movement of the paddles 204,206 is optimized.

The second paddle spacer 704 separates the first paddle 203 from the second paddle 205 and couples the first paddle 203 and the second paddle 205 to the first rack 3402 of the propulsion mechanism 3400. The second paddle spacer 704 ensures that the paddles 203,205 move in synchronization with the reciprocating motion of the pontoons 101,102. The second paddle spacer 704 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the second paddle spacer 704 ensures that the paddles 203,205 move in synchronization with the reciprocating motion of the pontoons 101,102, optimizing the propulsion process and enhancing the overall performance of the watercraft.

The use of a rack and pinion system in the propulsion mechanism 3400 allows for precise and efficient translation of the reciprocating motion of the pontoons 101,102 into the movement of the paddles 203,204,205,206. This configuration ensures that the paddles 203,204,205,206 move at a speed greater than the pontoons 101,102, generating sufficient rearward thrust to propel the watercraft forward. The engagement of the first gear 3401 with the first rack 3402 and second rack 3403, and the second gear 4101 with the third rack 4102 and fourth rack 4103, ensures synchronized movement of the paddles 203,204,205,206, optimizing propulsion and enhancing the overall performance of the watercraft.

In one or more embodiments, the first gear 3401, first rack 3402, and second rack 3403 are positioned at a different depth relative to the position of the second gear 4101, the third rack 4102, and the fourth rack 4103 to avoid mechanical interference. The arrangement of the first gear 3401 and second gear 4101 to rotate when the pontoons 101,102 move reciprocally relative to each other provides a robust and reliable mechanism for driving the paddles 203,204,205,206. This setup minimizes mechanical complexity while maximizing the efficiency of energy transfer from the user's walking motion to the paddles 203,204,205,206, resulting in improved forward propulsion compared to prior art designs.

The use of racks and gears, as opposed to cables and pulleys, offers advantages in terms of durability and maintenance. Gears and racks are less prone to stretching and wear over time, ensuring consistent performance and reducing the need for frequent adjustments or replacements. This makes the watercraft more reliable and easier to maintain, particularly in challenging water environments.

Turning now to FIGS. 44-48, illustrated therein is one explanatory paddle retractor 4400 configured in accordance with one or more embodiments of the disclosure. In one or more embodiments, the paddle retractor 4400 comprises a torsion spring 4401. As will be described below with reference to FIGS. 49-50, in other embodiments the paddle retractor 4400 can comprise elastic straps. Other examples of paddle retractors will be obvious to those of ordinary skill in the art having the benefit of this disclosure.

In one or more embodiments, the spring 4401 is designed to provide the necessary force to retract the paddles when they are not in use or when the pontoons are moving forward. The spring 4401 is constructed from materials that offer high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The spring 4401 is positioned to optimize the retraction of the paddles, reducing friction and enhancing the overall efficiency of the propulsion mechanism.

The spring loop 4402 is a part of the spring 4401. The spring loop 4402 is designed to engage with other components of the paddle retraction mechanism, providing a secure and stable connection. The spring loop 4402 ensures that the spring 4401 can effectively retract the paddles when necessary. The spring loop 4402 is constructed from the same high-strength, corrosion-resistant materials as the spring 4401, ensuring durability and reliability in water environments.

The spring arm 4403 extends from the spring 4401 and plays a role in the paddle retraction process. The spring arm 4403 is designed to apply force to the paddles, causing them to retract when the pontoons move forward. The spring arm 4403 is constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the spring arm 4403 ensures that the paddles retract smoothly and efficiently, reducing friction and enhancing the overall performance of the watercraft.

The spring posts 4404 serves as an anchor point for the spring 4401. In this illustrative embodiment, the torsion portion of the spring 4401 wraps around the two spring posts 4404 to securely retain the spring 4401 to the post arms 4405, which then attach to the paddle spacer.

In one or more embodiments, the spring posts 4404 are designed to securely hold the spring 4401 in place, ensuring that the spring 4401 can effectively retract the paddles. The spring posts 4404 are constructed from materials that provide high strength and resistance to corrosion, ensuring durability and reliability in water environments. The spring posts 4404 are positioned to optimize the performance of the spring 4401, ensuring that the paddles retract smoothly and efficiently.

The post arms 4405 attach to a corresponding paddle spacer. In one or more embodiments, the post arms 4405 support the spring posts 4404 and provide additional support and stability to allow the spring 4401 to function. The post arms 4405 are designed to ensure that the spring 4401 remains securely anchored, allowing the spring 4401 to effectively retract the paddles. The post arms 4405 are constructed from materials that provide high strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the post arms 4405 enhances the overall stability and performance of the paddle retraction mechanism.

The paddle connector 4406 is a component that links the paddles to the spring 4401. The paddle connector 4406 is designed to transmit the force from the spring 4401 to the paddles, causing them to retract when necessary. The paddle connector 4406 is constructed from materials that provide high strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the paddle connector 4406 ensures that the force from the spring 4401 is effectively transmitted to the paddles, optimizing the retraction process and enhancing the overall performance of the watercraft.

In one or more embodiments, the spring 4401 defines a spring loop 4402, which biases against the bottom of the paddle spacer to which the post arms are connected. Meanwhile, a spring arm 4403 biases against a corresponding paddle to cause the paddle against which it is biased to situate within a corresponding paddle cavity when its corresponding pontoon moves forward and to allow the paddle to extend distally from the paddle cavity when the pontoon moves rearward. In one or more embodiments, the torsion between the spring loop 4402 and the spring arm 4403 applies a loading force against the paddle biasing the paddle toward its paddle cavity. Advantageously, this can cause the paddles to situate within the paddle cavity when the watercraft is not in use, making it easier to carry. When in use, forces applied by the water when the paddles are driven rearward overcome the torsional preloading force of the spring 4401, thereby deploying the paddle downward.

The inclusion of a torsion spring as a paddle retractor 4400 ensures that the paddles are automatically retracted into the paddle cavity when the pontoon moves forward, thereby reducing friction and drag. This mechanism allows the paddles to deploy downward when the pontoon moves rearward, optimizing the generation of rearward thrust and enhancing the forward propulsion of the watercraft. The torsion spring's biasing action against the paddle spacer and the paddle ensures consistent and reliable retraction and deployment of the paddles, improving the overall efficiency and performance of the watercraft.

By utilizing a torsion spring, the design provides a simple yet effective means to manage the paddle positions without requiring complex mechanical systems. This reduces the potential for mechanical failure and maintenance requirements, making the watercraft more reliable and user-friendly. The torsion spring's ability to maintain the paddles in a retracted position when not in use also facilitates easier transportation and storage of the watercraft.

Turning now to FIGS. 49-50, illustrated therein is an alternate paddle retractor. In one or more embodiments, this alternate paddle retraction mechanism utilizes a first elastic band 4901 and a second elastic band 4902. In one or more embodiments, the first elastic band 4901 and the second elastic band 4902 retract the paddles 204,206 when not moving rearward. In one or more embodiments, this retraction occurs when the paddles 204,206 pivot relative to their paddle spacer 304.

In one or more embodiments, the first elastic band 4901 and the second elastic band 4902 attach at one end to the pontoon and at the other end to the back of the paddles 204,206. This configuration creates upward tension on the rearward portion of the paddles 204,206, ensuring that the paddles 204,206 remain retracted under the pontoon when not in use. When the pontoon moves rearward, the force of the water on the back of the paddles 204,206 overcomes the tension of the first elastic band 4901 and the second elastic band 4902, causing the paddles 204,206 to move downward and generate resistance with the water, resulting in forward propulsion.

The first elastic band 4901 and the second elastic band 4902 can be constructed from various materials that provide the necessary elasticity and durability for prolonged exposure to water environments. Examples include bungee cords or other materials with elastic properties. The size and shape of the elastic band can vary depending on the specific design requirements of the watercraft. This method of paddle retraction offers a simple and effective solution for reducing friction during forward motion and ensuring that the paddles deploy correctly during rearward motion. Other examples of paddle retractors will be obvious to those of ordinary skill in the art having the benefit of this disclosure.

In one or more embodiments, the first elastic band 4901 and the second elastic band 4902 ensure that the paddles 204,206 remain up and out of the way when the operator is not walking, i.e., when the paddles 204,206 are at rest. This configuration minimizes drag and potential interference with the watercraft's movement, enhancing the overall efficiency and performance of the propulsion system. The use of elastic bands provides a reliable and low-maintenance solution for managing paddle retraction and deployment, contributing to the watercraft's ease of use and operational effectiveness.

Turning now to FIGS. 51-52, illustrated therein is still another explanatory propulsion mechanism 5100 configured in accordance with one or more embodiments of the disclosure. While the propulsion mechanism (3400) described above with reference to FIGS. 34-43 used a single gear, the propulsion mechanism 5100 of FIGS. 51-52 uses a multi-gear system to increase overall mechanical advantage to increase the speed at which the corresponding paddles move beneath their corresponding pontoons.

FIGS. 51-52 illustrate a propulsion mechanism 5100 for manipulating paddle speed using different gear sizes. In one or more embodiments, the propulsion mechanism 5100 comprises a gear assembly 5101, a first rack 5102, and a second rack 5103. In one or more embodiments, the gear assembly 5101 comprises a first gear 5104, a second gear 5105, a third gear 5106, and a fourth gear 5201. By altering the size of the gears that interacts with the paddle shaft, the paddle speed can be increased or decreased relative to the pontoon speed.

Illustrating by example, if the first gear 5104 interacting with the first rack 5102 shaft is smaller than the others, the paddle speed will exceed the pontoon speed. Conversely, a larger first gear 5104 would reduce the paddle speed relative to the pontoon speed. This flexibility allows for fine-tuning the propulsion mechanism 5100 to achieve optimal performance.

The gears can be of any size and are not limited to those shown in the figures. Additional gears can be incorporated as needed to achieve the desired speed ratio. The gears can have any number of teeth and can be designed in various shapes, such as involute or other profiles. The materials used for the gears can vary, including options like plastic or aluminum, depending on the strength and weight requirements. Cutouts in the gears can be employed to reduce weight, and gear axles can be made from various materials and sizes to suit the application.

In one or more embodiments, the propulsion mechanism 5100 is integrated into the watercraft, and designed to manipulate paddle speed using different gear sizes. The propulsion mechanism 5100 includes a gear assembly 5101, which plays a central role in translating the reciprocating motion of the pontoons into the movement of the paddles. In one or more embodiments, the gear assembly 5101 comprises multiple gears that interact with corresponding racks to achieve the desired speed ratio for the paddles.

The second rack 5103 can be coupled to at least one paddle and works in conjunction with the gear assembly 5101. The first rack 5102 is designed to move linearly when the gears within the gear assembly 5101 rotate. This linear movement drives the paddles backward and forward faster than the relative speed of the pontoons, generating adequate rearward force to propel the watercraft forward. The second rack 5103 can be constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the second rack 5103 optimizes the translation of the reciprocating motion of the pontoons into the movement of the paddles.

The first rack 5102 is another component that works in conjunction with the gear assembly 5101. The first rack 5102 is designed to move linearly when the gears within the gear assembly 5101 rotate. This linear movement ensures that the paddles move in synchronization with the reciprocating motion of the pontoons. The first rack 5102 can be constructed from materials that provide high tensile strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the first rack 5102 ensures that the translation of the reciprocating motion of the pontoons into the movement of the paddles is optimized.

The first gear 5104 is a part of the gear assembly 5101. The first gear 5104 is designed to rotate when the pontoons move reciprocally relative to each other. This rotation translates the linear motion of the pontoons into the movement of the paddles. The first gear 5104 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the first gear 5104 optimizes the translation of the reciprocating motion of the pontoons into the movement of the paddles.

The second gear 5105 is another component of the gear assembly 5101. The second gear 5105 works in conjunction with the first gear 5104 to translate the linear motion of the pontoons into the movement of the paddles. The second gear 5105 is designed to rotate when the pontoons move reciprocally relative to each other. The second gear 5105 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the second gear 5105 ensures that the translation of the reciprocating motion of the pontoons into the movement of the paddles is optimized.

The third gear 5106 is also part of the gear assembly 5101. The third gear 5106 interacts with the first rack 5102 and the second rack 5103 to manipulate the paddle speed. By altering the size of the third gear 5106, the paddle speed can be increased or decreased relative to the pontoon speed. This flexibility allows for fine-tuning the propulsion mechanism 5100 to achieve optimal performance. The third gear 5106 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the third gear 5106 optimizes the translation of the reciprocating motion of the pontoons into the movement of the paddles.

Turning now to FIGS. 53-54, illustrated therein is still another propulsion mechanism 5300 that uses concentrically aligned gears, namely, a first gear 5301 and a second gear 5401, which are concentrically aligned along a central axis. In one or more embodiments, the first gear 5301 and the second gear 5401 engage a first rack 5302 and a second rack 5303.

In one or more embodiments, the first gear 5301 is larger than the second gear 5401. Paddle speed can be manipulated by adjusting the size of one or both of the first gear 5301 and the second gear 5401. Illustrating by example, if the second gear 5401 interacting with the first rack 5302 shaft is smaller, the paddle speed will be increased. Conversely, increasing the size of the second gear 5401 relative to the first gear 5301 would reduce the paddle speed relative to the pontoon speed. This flexibility allows for fine-tuning the propulsion mechanism 5300 to achieve optimal performance.

The first gear 5301 and the second gear 5401 can be of any size and are not limited to those shown in FIGS. 53-54. Additional gears can be incorporated as needed to achieve the desired speed ratio. The first gear 5301 and the second gear 5401 can have any number of teeth and can be designed in various shapes, such as involute or other profiles. The materials used for the first gear 5301 and the second gear 5401 can vary, including options like plastic or aluminum, depending on the strength and weight requirements. Cutouts in the gears can be employed to reduce weight, and gear axles can be made from various materials and sizes to suit the application

Turning now to FIGS. 55-58, illustrated therein is still another explanatory propulsion mechanism 5500 configured in accordance with one or more embodiments of the disclosure. In one or more embodiments, the propulsion mechanism 5500 of FIGS. 55-58 utilizing a toothed belt or cogged timing synchronous belt to drive the paddles.

In this configuration, the movement of one pontoon 102 drives a first gear 5501 harnessed within a second belt 5504, which interacts with a second gear 5502 harnessed within a first belt 5503 that drives the paddle spacer connected to the paddles. In one or more embodiments, the first belt 5503 and the second belt 5504 ensure synchronized movement of the paddles, allowing them to move backward and forward faster than the relative speed of the pontoons. This setup generates adequate rearward force to propel the watercraft forward. The first gear 5501 and second gear 5502 can be of different sizes to allow multiplication of pontoon movement to paddle speed, providing flexibility in adjusting the propulsion mechanism for optimal performance.

The toothed belt mechanism can be implemented in various ways. For instance, the first belt 5503 and the second belt 5504 can be made from materials that provide high tensile strength and resistance to wear, ensuring reliable performance in water environments. The first gear 5501 and second gear 5502 interacting with the first belt 5503 and the second belt 5504 can be constructed from materials such as plastic or aluminum, depending on the strength and weight requirements. The design allows for the inclusion of extra gears if necessary to achieve the desired speed ratio. This configuration ensures that the paddles generate sufficient rearward thrust, translating the user's walking motion into effective forward movement of the watercraft.

In one embodiment, toothed belt mechanism includes a first gear 5501 and a second gear 5502 carried by the first pontoon. A mirror image of the toothed belt mechanism of FIGS. 55-58 would be carried by the second pontoon 102. The first gear 5501 and second gear 5502 are configured to rotate when the pontoons move reciprocally relative to each other. This rotation drives the first belt 5503, which in turn moves the paddles. The use of a toothed belt provides a robust and reliable means of translating the reciprocating motion of the pontoons into paddle movement, enhancing the overall performance and efficiency of the watercraft.

As shown in FIGS. 55-58, the propulsion mechanism 5500 is a component of the watercraft that is designed to harness the reciprocating motion of the pontoons to drive the paddles. The propulsion mechanism 5500 translates the linear motion of the pontoons into a faster movement of the paddles, thereby generating forward thrust. This mechanism ensures that the paddles move at a speed greater than the pontoons, providing effective propulsion. The increased speed of the paddles relative to the pontoons allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft.

The first gear 5501 is a part of the propulsion mechanism 5500. The first gear 5501 is carried by the first pontoon and engages with the first belt 5503. The first gear 5501 is designed to rotate when the pontoons move reciprocally relative to each other. This rotation translates the linear motion of the pontoons into the movement of the paddles. The first gear 5501 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the first gear 5501 optimizes the translation of the reciprocating motion of the pontoons into the movement of the paddles.

The second gear 5502 is another component of the propulsion mechanism 5500. The second gear 5502 works in conjunction with the first gear 5501 to translate the linear motion of the pontoons into the movement of the paddles. The second gear 5502 is designed to rotate when the pontoons move reciprocally relative to each other. The second gear 5502 is constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments. The positioning of the second gear 5502 ensures that the translation of the reciprocating motion of the pontoons into the movement of the paddles is optimized.

The first belt 5503 is a part of the propulsion mechanism 5500. The first belt 5503 is coupled to the second gear 5502 and is responsible for transmitting the reciprocating motion of the pontoons to the paddles. The first belt 5503 is constructed from materials that provide high tensile strength and resistance to wear, ensuring reliable performance in water environments. The first belt 5503 is positioned to optimize the translation of the reciprocating motion of the pontoons into the movement of the paddles.

The second belt 5504 is another component of the propulsion mechanism 5500. The second belt 5504 works in conjunction with the first belt 5503 to ensure synchronized movement of the paddles. The second belt 5504 is coupled to the first gear 5501 and is responsible for transmitting the reciprocating motion of the pontoons to the paddles. The second belt 5504 is constructed from materials that provide high tensile strength and resistance to wear, ensuring reliable performance in water environments. The positioning of the second belt 5504 ensures that the translation of the reciprocating motion of the pontoons into the movement of the paddles is optimized.

The propulsion mechanism 5500 comprises a first belt 5503 coupled to the at least one paddle, a first gear 5501 carried by the second pontoon 102, a second belt 5504 coupled to the at least one other paddle, and a second gear 5502 carried by the first pontoon. The first gear 5501 and second gear 5502 are configured to rotate when the first pontoon and the second pontoon move reciprocally relative to each other.

Turning now to FIG. 59, illustrated therein is one explanatory paddle 5900 configured in accordance with one or more embodiments of the disclosure. In one or more embodiments, the paddle 5900 defines a water sweeping curve 5901 to push water in multiple directions from the convex side of the water sweeping curve 5901. In one or more embodiments, the paddle 5900 also defines a water navigating apex 5902 to create a more linear movement of the watercraft into which the paddle 5900 is integrated.

In one or more embodiments, the paddle 5900 is configured with a design that incorporates a slight downward slope, defined by the water sweeping curve 5901, at the back end of the paddle 5900. In one or more embodiments, this water sweeping curve 5901 facilitates the downward movement and rotation of the paddle 5900 when rearward motion begins. The design ensures that water collects under the paddle 5900, forcing the paddle 5900 to deploy downward effectively. This deployment mechanism enhances the paddle's ability to generate rearward thrust, contributing to the forward propulsion of the watercraft. The downward slope at the back end of the paddle 5900 optimizes the interaction between the paddle 5900 and the water, ensuring efficient propulsion.

Turning now to FIG. 60, illustrated therein is one explanatory pontoon locking mechanism 6000. In one or more embodiments, the pontoon locking mechanism 6000 comprises a spring 6001, a pin 6002, a spring sliding stop 6003, and a spring stop 6004.

In one or more embodiments, the pontoon locking mechanism 6000 allows the pontoons to be locked into position relative to one another. This pontoon locking mechanism 6000 enables the user to switch from a reciprocating motion to a more traditional paddleboard configuration when the watercraft is in use as well.

In one or more embodiments, the pontoon locking mechanism 6000 comprises a pin 6002 with a curved end that can be retracted, thereby compressing the spring 6001 between the spring sliding stop 6003 and the spring stop 6004, to unlock the pontoons. The spring 6001 provides tension, ensuring that when the pin 6002 is rotated for deployment, the pin 6002 automatically locks when the holes (not shown) on the opposite pontoon align with the pin 6002. In one or more embodiments, the pin 6002 slides along the opposite pontoon until it engages a corresponding hole. When this occurs, the spring 6001 elongates, pushing the sliding spring stop 6003 forward and away from the spring stop 6004, thereby causing the pin 6002 to engage the aperture and lock the pontoons together.

In one or more embodiments, the pontoon locking mechanism 6000 can also be used to enhance stability of the watercraft when a reciprocating motion between pontoons is no longer desired. This configuration allows the user to propel the watercraft forward using a standard stand-up paddle (SUP) technique. The pontoon locking mechanism 6000 provides additional stability, making the process easier for the user to maintain balance and control while paddling. The design ensures that the pontoons remain securely locked together, preventing any unintended movement that could destabilize the watercraft.

In one or more embodiments, an alternative mechanism for locking the pontoons relative to one another involves employing a lock, brake, or stopping mechanism along the linear longitudinal rails. This configuration provides a robust and reliable means of securing the pontoons together, ensuring that the watercraft remains stable and easy to maneuver when the reciprocating motion is not in use. The locking device and alternative mechanisms offer flexibility and versatility, allowing the user to adapt the watercraft to different operating conditions and preferences. Other pontoon locking mechanisms will be obvious to those of ordinary skill in the art having the benefit of this disclosure.

Turning now to FIG. 61, in one or more embodiments each pontoon will include a fin 6101 positioned beneath that pontoon. In one or more embodiments, the inclusion of such a fin 6101 facilitates straight tracking of the watercraft on the water.

In one or more embodiments, the fin 6101 is designed to enhance the stability and directional control of the watercraft during operation. Unlike traditional fins, which are optimized for forward-only movement, the fin 6101 in this design accommodates both forward and rearward motion. This dual-direction capability is useful for the reciprocating movement of the pontoons, ensuring that the watercraft remains stable and tracks straight even when one pontoon moves backward.

In one or more embodiments, the fin 6101 is symmetrical when viewed from the left or right, allowing for effective performance in both directions. The symmetrical design minimizes drag and resistance during the reciprocating motion, contributing to the overall efficiency of the propulsion mechanism. The fin 6101 can be constructed from various materials, including plastic, fiberglass, or other composites, to provide durability and resistance to wear in water environments. The positioning and design of the fin 6101 ensure that the watercraft maintains a straight path, enhancing the user's ability to control and maneuver the watercraft effectively.

Turning now to FIGS. 62-63, illustrated therein is a portion of the watercraft, focusing on an alternate shape for the paddle retaining roller receiver, which in this illustrative embodiment defines an oscillating mechanism 6200. In one or more embodiments, elliptical track pins 6203,6204 situate within elliptical tracks 6201,6202 attached to the paddle spacer 304, which cause the paddles 204,206 move downward when moving backward, and upward when moving forward.

In this illustrative embodiment, the oscillating mechanism 6200 functions as a paddle retraction mechanism, using an elliptical track system. The third paddle 204 and the fourth paddle 206 are shown as part of this configuration. These paddles 204,206 are designed to move backward and forward faster than the relative speed of the pontoons, generating adequate rearward force to propel the watercraft forward. When the pontoons move forward, the paddles 204,206 retract upward to minimize friction. When the pontoons move rearward, the paddles 204,206 deploy downward to create resistance with the water, resulting in forward propulsion.

The first paddle spacer 304 is a component that separates the third paddle 204 from the fourth paddle 206 and couples these paddles 204,206 to the propulsion mechanism. The first paddle spacer 304 ensures that the paddles move in synchronization with the reciprocating motion of the pontoons. The first paddle spacer 304 is situated in, and moveable within, the paddle cavity by the propulsion mechanism. This configuration ensures that the paddles move in synchronization with the reciprocating motion of the pontoons, allowing for efficient translation of the user's walking motion into forward thrust.

The oscillating mechanism 6200 ensures that the paddles 204,206 retract upward when moving forward and deploy downward when moving rearward. The oscillating mechanism 6200 is designed to optimize the retraction and deployment of the paddles 204,206, reducing friction during forward motion and enhancing the overall efficiency of the propulsion mechanism.

The first elliptical track 6201 and the second elliptical track 6202 are components of the oscillating mechanism 6200. These tracks guide the movement of the paddles 204,206, ensuring that they follow an elliptical path during operation. The elliptical design of the tracks allows the paddles 204,206 to move at a higher elevation when moving forward, reducing friction and drag. When moving rearward, the paddles 204,206 move on the lower part of the track, ensuring effective deployment and generation of rearward thrust. The first elliptical track 6201 and the second elliptical track 6202 are constructed from materials that provide durability and resistance to wear, ensuring reliable performance in water environments.

The first elliptical track pin 6203 and the second elliptical track pin 6204 are components that engage with the elliptical tracks, guiding the movement of the paddles. These pins ensure that the paddles 204,206 follow the designated elliptical path, optimizing the retraction and deployment process. The first elliptical track pin 6203 and the second elliptical track pin 6204 are constructed from materials that provide high strength and resistance to corrosion, ensuring reliable performance in water environments. The positioning of these pins ensures that the paddles 204,206 move smoothly and efficiently along the elliptical tracks, enhancing the overall performance of the propulsion mechanism.

Turning now to FIG. 64, illustrated therein is a generalized system 6400 configured in accordance with one or more embodiments of the disclosure. The system 6400 comprises several components that work together to enable the manual propulsion mechanism for the watercraft. These components include the left pontoon 6402, the right pontoon 6401, the left pontoon paddles 6404, the right pontoon paddles 6403, and the reciprocating mechanical coupler/actuator 6405.

The left pontoon 6402 is a buoyant structure designed to support the user's weight and provide stability on the water. The left pontoon 6402 is constructed from materials that ensure buoyancy and durability, such as foam covered with fiberglass, carbon fiber, or molded plastics. The left pontoon 6402 is positioned parallel to the right pontoon 6401, allowing for a reciprocating motion that is required for the manual propulsion mechanism. The left pontoon 6402 houses the left pontoon paddles 6404, which are situated underneath the pontoon and are designed to move backward and forward to generate forward thrust.

The right pontoon 6401 is similar in design and function to the left pontoon 6402. The right pontoon 6401 is also a buoyant structure that supports the user's weight and provides stability on the water. The right pontoon 6401 is constructed from materials that ensure buoyancy and durability, such as foam covered with fiberglass, carbon fiber, or molded plastics. The right pontoon 6401 is positioned parallel to the left pontoon 6402, enabling the reciprocating motion required for the manual propulsion mechanism. The right pontoon 6401 houses the right pontoon paddles 6403, which are situated underneath the pontoon and are designed to move backward and forward to generate forward thrust.

The left pontoon paddles 6404 are coupled to the left pontoon 6402 and are designed to move backward and forward faster than the relative speed of the left pontoon 6402. When the left pontoon 6402 moves forward, the left pontoon paddles 6404 retract upward to minimize friction. When the left pontoon 6402 moves rearward, the left pontoon paddles 6404 deploy downward to create resistance with the water, resulting in forward propulsion. The left pontoon paddles 6404 are constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments.

The right pontoon paddles 6403 are coupled to the right pontoon 6401 and are designed to move backward and forward faster than the relative speed of the right pontoon 6401. When the right pontoon 6401 moves forward, the right pontoon paddles 6403 retract upward to minimize friction. When the right pontoon 6401 moves rearward, the right pontoon paddles 6403 deploy downward to create resistance with the water, resulting in forward propulsion. The right pontoon paddles 6403 are constructed from materials that provide durability and resistance to corrosion, ensuring reliable performance in water environments.

The reciprocating mechanical coupler/actuator 6405 is a component that facilitates the reciprocating motion of the pontoons and the corresponding movement of the paddles. The reciprocating mechanical coupler/actuator 6405 translates the linear motion of the pontoons into a faster movement of the paddles, thereby generating forward thrust. This component ensures that the paddles move at a speed greater than the pontoons, providing effective propulsion. The increased speed of the paddles relative to the pontoons allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft. The reciprocating mechanical coupler/actuator 6405 can be implemented using various mechanisms, such as cables and pulleys, gears and pinions, or belts and gears, depending on the specific design requirements of the watercraft.

Turning now to FIG. 65, illustrated therein is one explanatory method 6500 in accordance with one or more embodiments of the disclosure. The method 6500 comprises several steps that work together to enable the manual propulsion mechanism for the watercraft. These steps include step 6501, step 6502, step 6503, step 6504, step 6505, and step 6506.

Step 6501 involves receiving energy from a first pontoon that moves slidably in an opposite direction relative to a second pontoon coupled to the first pontoon. In one or more embodiments, step 6501 occurs when a user of the watercraft drives the first pontoon forward with their foot. In one or more embodiments, this step 6501 harnesses that energy and uses it to assist in driving the paddles beneath the opposite pontoon rearward at step 6503 to generate forward thrust.

Step 6502 involves driving paddles situated beneath the second pontoon rearward. At step 6503, the paddles underneath the second pontoon deploy and displace water. In one or more embodiments, step 6502 also comprises driving the paddles situated beneath the first pontoon forward, with step 6503 comprising the paddles beneath the first pontoon retracting into a cavity defined by the first pontoon.

In one or more embodiments, step 6502 results in a first set of paddles coupled to an underside of the first pontoon and a second set of paddles coupled to an underside of the second pontoon translating with a linear velocity that is greater than another linear velocity experienced by the first pontoon and the second pontoon. This step 6502 ensures that the paddles move at a speed greater than the pontoons, providing effective propulsion. The increased speed of the paddles relative to the pontoons allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft.

Step 6503 involves causing the paddles underneath the second pontoon deploy and displace water. In one or more embodiments, step 6503 also comprises causing the first set of paddles to retract into a first paddle cavity when the first pontoon and the first set of paddles move forward. This step 6503 moves the watercraft forward with the paddles under the second pontoon while reducing friction and drag during the forward motion of the first pontoon, thereby ensuring that the latter paddles are out of the way and do not interfere with the watercraft's movement. A biasing assembly can be implemented to withdraw the paddles situated beneath the first pontoon using various mechanisms, such as torsion springs or elastic bands, to achieve the desired retraction of the paddles.

At step 6504, the method 6500 reverses, with step 6504 receiving energy that drives the second pontoon forward. In one or more embodiments, step 6505 then drives the paddles beneath the first pontoon rearward, with step 6506 driving the paddles into the water and away from the watercraft, thereby propelling the watercraft forwards.

In one or more embodiments, step 6506 involves deploying the first set of paddles downward when the first pontoon moves rearward. This step 6505 ensures that the paddles create resistance with the water, generating rearward thrust and propelling the watercraft forward. The deployment mechanism ensures that the paddles are effectively positioned to interact with the water, optimizing the propulsion process and enhancing the overall performance of the watercraft.

Step 6506 can also involve causing, by a biasing assembly, the second set of paddles to retract into a second paddle cavity when the second pontoon and the second set of paddles move forward from the force received at step 6504. This reduces friction and drag during the forward motion of the pontoons, ensuring that the paddles are out of the way and do not interfere with the watercraft's movement. The biasing assembly can be implemented using various mechanisms, such as torsion springs or elastic bands, to achieve the desired retraction of the paddles.

The method 6500 ensures that the paddles move at a speed greater than the pontoons, providing effective propulsion. The increased speed of the paddles relative to the pontoons allows for a more efficient translation of the user's walking motion into forward movement, enhancing the overall performance of the watercraft. The method 6500 addresses the limitations of designs by ensuring that the paddles move at a speed greater than the pontoons, providing effective propulsion. The increased speed of the paddles relative to the pontoons allows for a more efficient and effective movement on water, overcoming the issue of inadequate forward propulsion seen in previous designs.

Turning now to FIG. 66, illustrated therein are various embodiments of the disclosure. The embodiments of FIG. 66 are shown as labeled boxes in FIG. 66 due to the fact that the individual components of these embodiments have been illustrated in detail in FIGS. 1-65, which precede FIG. 66. Accordingly, since these items have previously been illustrated and described, their repeated illustration is no longer essential for a proper understanding of these embodiments. Thus, the embodiments are shown as labeled boxes.

At 6601, a watercraft comprises a first pontoon slidably coupled to a second pontoon, at least one paddle coupled to the first pontoon and at least one other paddle coupled to the second pontoon, and a propulsion mechanism. At 6601, the propulsion mechanism is operable to move the at least one paddle and the at least one other paddle reciprocally when the first pontoon and the second pontoon move reciprocally relative to each other with a speed of movement of the at least one paddle and the at least one other paddle being greater than another speed of movement of the first pontoon and the second pontoon.

At 6602, the propulsion mechanism of 6601 comprises a first cable engaging a first pulley and a second pulley carried by the second pontoon, and a second cable engaging a third pulley and a fourth pulley carried by the first pontoon. At 6601, the at least one paddle is coupled to the second cable and the at least one other paddle is coupled to the first cable.

At 6603, the at least one paddle of 6602 comprises a first paddle and a second paddle. At 6604, the at least one other paddle comprises a third paddle and a fourth paddle. At 6603, the watercraft further comprises a first paddle spacer separating the first paddle from the second paddle. At 6603, the first paddle spacer couples the first paddle and the second paddle to the second cable. At 6603, the watercraft comprises a second paddle spacer separating the third paddle from the fourth paddle. At 6603, the second paddle spacer couples the third paddle and the fourth paddle to the first cable.

At 6604, the first pontoon of 6603 defines a first paddle cavity on an underside of the first pontoon. At 6604, the second pontoon defines a second paddle cavity on an underside of the second pontoon. At 6604, the first paddle spacer is situated and moveable by the propulsion mechanism within the first paddle cavity. At 6604, the second paddle spacer is situated and moveable by the propulsion mechanism within the second paddle cavity.

At 6605, the first pontoon of 6604 defines a first paddle retaining roller receiver. At 6605, the second pontoon defines a second paddle retaining roller receiver. At 6605, the watercraft further comprises at least two paddle retaining rollers coupled to the first paddle spacer and situated within the first paddle retaining roller receiver. At 6605, the watercraft comprises at least two other paddle retaining rollers coupled to the second paddle spacer and situated within the second paddle retaining roller receiver.

At 6606, the first paddle retaining roller receiver and the second paddle retaining roller receiver of 6605 are elliptical. At 6607, the watercraft of 6605 further comprises a paddle retractor operable to cause the at least one paddle to situate within the first paddle cavity when the first pontoon moves forward and to allow the at least one paddle to extend distally from the first paddle cavity when the first pontoon moves rearward.

At 6608, the paddle retractor of 6607 comprises a torsion spring having a spring loop biased against the first paddle spacer and a spring arm biased against the first paddle. At 6609, the watercraft of 6605 further comprises a sliding connector slidably coupling the first pontoon to the second pontoon.

At 6610, the sliding connector of 6609 comprises a sliding male connector coupled to one of the first pontoon or the second pontoon and a female sliding connector receiver coupled to another of the first pontoon or the second pontoon and engaging the sliding male connector. At 6611, the watercraft of 6610 further comprises a first sliding male connector roller and a second sliding male roller connector coupled to the sliding male connector and engaging inner surfaces of the female sliding connector receiver. At 6612, the watercraft of 6611 further comprises a first sliding male connector stabilization roller and a second sliding male connector stabilization roller coupled to the sliding male connector and engaging other inner surfaces of the female sliding connector receiver.

At 6613, the propulsion mechanism of 6601 comprises a first rack coupled to the at least one paddle, a second rack coupled to the second pontoon, a third rack coupled to at least one other paddle, a fourth rack coupled to the first pontoon, a first gear, carried by the first pontoon and engaging the first rack and the second rack, and a second gear, carried by the second pontoon and engaging the third rack and the fourth rack. At 6613, the first gear and second gear are configured to rotate when the first pontoon and the second pontoon move reciprocally relative to each other.

At 6614, the propulsion mechanism of 6601 comprises a first belt coupled to the at least one paddle, a first gear carried by the second pontoon, a second belt coupled to the at least one other paddle, and a second gear carried by the first pontoon. At 6614, the first gear and second gear are configured to rotate when the first pontoon and the second pontoon move reciprocally relative to each other.

At 6615, a method in a watercraft comprises receiving, by a propulsion mechanism carried by the watercraft, energy from a first pontoon slidably moving in an opposite direction relative to a second pontoon coupled to the first pontoon. At 6615, the method comprises driving, by the propulsion mechanism, a first set of paddles coupled to an underside of the first pontoon and a second set of paddles coupled to an underside of the second pontoon with a linear velocity that is greater than another linear velocity experienced by the first pontoon and the second pontoon.

At 6616, the method of 6615 further comprises causing, by a biasing assembly, the first set of paddles to retract into a first paddle cavity when the first pontoon and the first set of paddles move forward. At 6617, the driving of 6616 comprises causing cable passing about two pulleys and coupled to the first set of paddles to rotate the two pulleys.

At 6618, a watercraft comprises a pair of flotation pontoons, paddles slidably coupled under the pair of flotation pontoons, a propulsion mechanism configured to harness a reciprocating motion of the pair of pontoons to drive the paddles under the pair of flotation pontoons faster than motion of the pair of flotation pontoons when moving with a reciprocal motion relative to each other, a sliding rail system configured to slidably couple the pair of flotation pontoons together, and a paddle retraction mechanism configured to pivot the paddles upwards when moving forward and deploy the paddles downward when moving rearward, the paddle retraction.

At 6619, the first flotation pontoon of the pair of flotation pontoons to 6618 defines a first paddle cavity. At 6619, the second flotation pontoon of the pair of flotation pontoons defines a second paddle cavity. At 6619, the paddles comprise a first paddle and a second paddle coupled under the first flotation pontoon, and a third paddle and a fourth paddle coupled under the second flotation pontoon.

At 6619, the paddle retraction mechanism comprises a first paddle retractor causing the first paddle and the second paddle to situate within the first paddle cavity when the first flotation pontoon moves forward while deploying when the first flotation pontoon moves backward, and a second paddle retractor causing the third paddle and the fourth paddle to situate within the second paddle cavity when the second flotation pontoon moves forward while deploying when the second flotation pontoon moves backward. At 6620, the propulsion mechanism of 6619 comprises a set of pulleys and cables, gears and pinions, or belts and gears, configured to translate the paddles under the pair of flotation pontoons faster than motion of the pair of flotation pontoons with a reciprocating movement, thereby generating forward thrust for the watercraft.

In the foregoing specification, specific embodiments of the present disclosure have been described. However, one of ordinary skill in the art appreciates that various modifications and changes can be made without departing from the scope of the present disclosure as set forth in the claims below. Thus, while preferred embodiments of the disclosure have been illustrated and described, it is clear that the disclosure is not so limited. Numerous modifications, changes, variations, substitutions, and equivalents will occur to those skilled in the art without departing from the spirit and scope of the present disclosure as defined by the following claims.

For example, the watercraft may incorporate a hinge mechanism that allows the apparatus to fold lengthwise for easier transportation and storage. This hinge mechanism can be designed to lock the pontoons in a folded position, enhancing stability while folded. The hinge may be constructed from various materials, including metals, polymers, or composites, to ensure durability and resistance to wear. The locking mechanism can be implemented using mechanical fasteners, latches, or other securing devices that provide a robust and reliable means of keeping the pontoons in a folded position.

Additionally, the watercraft may include a carrying handle to facilitate transport. The carrying handle can be positioned at a central location on the watercraft, allowing for balanced and comfortable carrying. The handle can be constructed from materials such as plastic, rubber, or metal, providing a secure grip and resistance to environmental conditions. The design of the carrying handle ensures that the watercraft can be easily transported by a single user, enhancing the overall convenience and usability of the device.

Another possible embodiment involves the use of a mechanism that allows the paddles to move forward and rearward under their respective pontoons at a relative speed faster than the pontoons. This mechanism can be achieved using different sized pulleys, gears, or belts, allowing for the multiplication of pontoon movement to paddle speed. The design ensures that the paddles generate sufficient rearward thrust to propel the watercraft forward, optimizing the propulsion process. The mechanism can be constructed from various materials, including metals, polymers, or composites, to ensure durability and resistance to wear in water environments.

Furthermore, the watercraft may incorporate a mechanism that allows the pontoons to move up and down relative to one another while staying juxtaposed longitudinally. This vertical movement can create a more natural walking motion and help decrease friction from the forward-moving pontoon. The mechanism can be implemented using vertically oriented short rails, springs, or other linear motion systems that provide stability and smooth movement. The design ensures that the pontoons remain aligned and stable during operation, enhancing the overall performance and user experience of the watercraft.

Accordingly, the specification and figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications are intended to be included within the scope of present disclosure. The benefits, advantages, solutions to problems, and any element(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential features or elements of any or all the claims.

Claims

1. A watercraft, comprising:

a first pontoon slidably coupled to a second pontoon:

at least one paddle coupled to the first pontoon and at least one other paddle coupled to the second pontoon; and

a propulsion mechanism operable to move the at least one paddle and the at least one other paddle reciprocally when the first pontoon and the second pontoon move reciprocally relative to each other with a speed of movement of the at least one paddle and the at least one other paddle being greater than another speed of movement of the first pontoon and the second pontoon.

2. The watercraft of claim 1, wherein the propulsion mechanism comprises:

a first cable engaging a first pulley and a second pulley carried by the second pontoon: and

a second cable engaging a third pulley and a fourth pulley carried by the first pontoon:

wherein the at least one paddle is coupled to the second cable and the at least one other paddle is coupled to the first cable.

3. The watercraft of claim 2, wherein the at least one paddle comprises a first paddle and a second paddle and the at least one other paddle comprises a third paddle and a fourth paddle, further comprising:

a first paddle spacer separating the first paddle from the second paddle and coupling the first paddle and the second paddle to the second cable; and

a second paddle spacer separating the third paddle from the fourth paddle and coupling the third paddle and the fourth paddle to the first cable.

4. The watercraft of claim 3, wherein:

the first pontoon defines a first paddle cavity on an underside of the first pontoon:

the second pontoon defines a second paddle cavity on an underside of the second pontoon;

the first paddle spacer is situated and moveable by the propulsion mechanism within the first paddle cavity; and

the second paddle spacer is situated and moveable by the propulsion mechanism within the second paddle cavity.

5. The watercraft of claim 4, wherein:

the first pontoon defines a first paddle retaining roller receiver; and

the second pontoon defines a second paddle retaining roller receiver;

further comprising: at least two paddle retaining rollers coupled to the first paddle spacer and situated within the first paddle retaining roller receiver; and at least two other paddle retaining rollers coupled to the second paddle spacer and situated within the second paddle retaining roller receiver.

6. The watercraft of claim 5, wherein the first paddle retaining roller receiver and the second paddle retaining roller receiver are elliptical.

7. The watercraft of claim 5, further comprising a paddle retractor operable to cause the at least one paddle to situate within the first paddle cavity when the first pontoon moves forward and to allow the at least one paddle to extend distally from the first paddle cavity when the first pontoon moves rearward.

8. The watercraft of claim 7, wherein the paddle retractor comprises a torsion spring having a spring loop biased against the first paddle spacer and a spring arm biased against the first paddle.

9. The watercraft of claim 5, further comprising a sliding connector slidably coupling the first pontoon to the second pontoon.

10. The watercraft of claim 9, wherein the sliding connector comprises a sliding male connector coupled to one of the first pontoon or the second pontoon and a female sliding connector receiver coupled to another of the first pontoon or the second pontoon and engaging the sliding male connector.

11. The watercraft of claim 10, further comprising a first sliding male connector roller and a second sliding male roller connector coupled to the sliding male connector and engaging inner surfaces of the female sliding connector receiver.

12. The watercraft of claim 11, further comprising a first sliding male connector stabilization roller and a second sliding male connector stabilization roller coupled to the sliding male connector and engaging other inner surfaces of the female sliding connector receiver.

13. The watercraft of claim 1, wherein the propulsion mechanism comprises:

a first rack coupled to the at least one paddle:

a second rack coupled to the second pontoon:

a third rack coupled to at least one other paddle:

a fourth rack coupled to the first pontoon:

a first gear, carried by the first pontoon and engaging the first rack and the second rack: and

a second gear, carried by the second pontoon and engaging the third rack and the fourth rack;

wherein the first gear and second gear are configured to rotate when the first pontoon and the second pontoon move reciprocally relative to each other.

14. The watercraft of claim 1, wherein the propulsion mechanism comprises:

a first belt coupled to the at least one paddle:

a first gear carried by the second pontoon;

a second belt coupled to the at least one other paddle: and

a second gear carried by the first pontoon:

wherein the first gear and second gear are configured to rotate when the first pontoon and the second pontoon move reciprocally relative to each other.

15. A method in a watercraft, the method comprising:

receiving, by a propulsion mechanism carried by the watercraft, energy from a first pontoon slidably moving in an opposite direction relative to a second pontoon coupled to the first pontoon: and

driving, by the propulsion mechanism, a first set of paddles coupled to an underside of the first pontoon and a second set of paddles coupled to an underside of the second pontoon with a linear velocity that is greater than another linear velocity experienced by the first pontoon and the second pontoon.

16. The method of claim 15, further comprising causing, by a biasing assembly, the first set of paddles to retract into a first paddle cavity when the first pontoon and the first set of paddles move forward.

17. The method of claim 16, wherein the driving comprises causing cable passing about two pulleys and coupled to the first set of paddles to rotate the two pulleys.

18. A watercraft, comprising:

a pair of floatation pontoons:

paddles slidably coupled under the pair of flotation pontoons:

a propulsion mechanism configured to harness a reciprocating motion of the pair of pontoons to drive the paddles under the pair of flotation pontoons faster than motion of the pair of flotation pontoons when moving with a reciprocal motion relative to each other:

a sliding rail system configured to slidably couple the pair of flotation pontoons together: and

a paddle retraction mechanism configured pivot the paddles upwards when moving forward and deploy the paddles downward when moving rearward.

19. The watercraft of claim 18, wherein:

a first flotation pontoon of the pair of flotation pontoons defines a first paddle cavity; and

a second flotation pontoon of the pair of flotation pontoons defines a second paddle cavity;

the paddles comprise: a first paddle and a second paddle coupled under the first flotation pontoon; and a third paddle and a fourth paddle coupled under the second flotation pontoon; and

the paddle retraction mechanism comprises: a first paddle retractor causing the first paddle and the second paddle to situate within the first paddle cavity when the first flotation pontoon moves forward while deploying when the first flotation pontoon moves backward; and a second paddle retractor causing the third paddle and the fourth paddle to situate within the second paddle cavity when the second flotation pontoon moves forward while deploying when the second flotation pontoon moves backward.

20. The watercraft of claim 19, wherein the propulsion mechanism comprises a set of pulleys and cables, gears and pinions, or belts and gears, configured to translate the paddles under the pair of flotation pontoons faster than motion of the pair of flotation pontoons with a reciprocating movement, thereby generating forward thrust for the watercraft.