Abstract: A kayak paddle includes a tubular shaft having a first distal end and a second distal end, a first blade connected to the first distal end of the tubular shaft, and a second blade connected to the second distal end of the tubular shaft, wherein the first and second blades are made with a translucent material. The kayak paddle further includes a first light source secured within the tubular shaft and oriented to emit light from the first distal end into the first blade, a second light source secured within the tubular shaft and oriented to emit light from the second distal end into the second blade, and a battery electrically connected to the first and second light sources to supply electrical current that causes the first and second light sources to emit light.

Abstract: The present invention disclosed a paddle, which includes a blade and a pole that connects to the blade. The pole consists of a first rod and a second rod capable of entering and moving within; with one end of the second rod connected to the first rod and able to move simultaneously. Wherein, the material of the first rod within the pole is different from that of the pole, and the paddle is less likely to break instantaneously.

Abstract: A paddle for stand-up paddle boards and other water craft includes a paddle blade at a lower end of the paddle shaft and a skeg/fin extending from the lower edge of the paddle blade. A method and system for transporting a user across water or other surfaces has a board or other water craft for the user to stand/sit upon and a paddle with the skeg/fin extending from the paddle blade.

Abstract: A rowing oar is described. The rowing oar can have a plurality of flow disrupters arranged on a shaft of the oar. In one embodiment, the flow disrupters can be circular bumps arranged in lines along the shaft of the oar. The flow disrupters can cause the air flow over the oar to be more turbulent so that the flow separation on a backside of the oar is reduced. The reduction in flow separation can reduce aerodynamic drag on the oar when it travels through the air. Thus, a rower can expend less energy during rowing using the oar.

Abstract: A jet-powered oar system for a paddleboard designed to help paddle boarders travel long distances without feeling fatigue includes a propulsive oar and a restraining mechanism. The propulsive oar propels the paddle board without physical input from the paddle boarder. The restraining mechanism retrofits onto an existing paddleboard and retains the propulsive oar. The propulsive oar utilizes an oar shaft, an oar paddle, an impeller pump assembly, a primary battery pack, a kill switch, and an attachment collar. The oar shaft and the oar paddle can be used to physically propel the paddle board. The impeller pump assembly permits motorized propulsion of the paddle board when the paddle boarder succumbs to fatigue. The primary battery back stores electrical energy for powering the impeller pump assembly. The kill switch stops the paddle board from moving. Finally, the attachment collar couples the propulsive oar onto the restraining mechanism.

Abstract: A paddle handle has a handle having a handle outside member connected to a handle inside member by a handle lateral member. A handle attachment member is connected to the handle at the handle inside member. A swivel is connected to the handle attachment member. The swivel has a first position and a second position. A first handle swivel detent and a second handle swivel detent are selectively engaged by a handle swivel engagement member. The first handle swivel detent is at a different angle than the second handle swivel detent. A handle swivel control is connected to the handle swivel engagement member. The handle swivel control is biased to engage into either the first handle swivel detent or the second handle swivel detent.

Abstract: A paddle device configured with adjustable paddle-blades at both a first end and a second end is described. The paddle device is equipped with a center padded grip area, which functions as a center extender couple for adapting to conventional oars or paddles in an alternate embodiment described. The paddle device is configured to conjoin two paddles or oars together such to create a larger alternating paddle, configured to effectively expedite the paddling process on paddle boards and other similar small single-paddle, manual craft by eliminating the need to alternate hands while paddling.

Abstract: A sleeve and collar system for an oar includes a sleeve configured to couple to a shaft portion of the oar. The sleeve includes an outer surface. The system also includes a wear collar configured to couple around the sleeve at each of a plurality of longitudinal positions along the sleeve. The wear collar is configured to bear substantially all direct contact from an oarlock during a rowing stroke of the oar. A radially inner surface of the wear collar is shaped to be complementary to at least a portion of the sleeve outer surface, such that the wear collar inner surface and the sleeve outer surface cooperate to maintain the wear collar in a predetermined orientation about a longitudinal axis of the sleeve at each of the plurality of longitudinal positions.

Abstract: A watercraft having propulsion means extending below the water line comprising a pair of flexible fins each adapted to oscillate through an arcuate path in a generally transverse direction across the central longitudinal dimension of the watercraft. As input force is applied, the fins twist to form an angle of attack for providing forward thrust while moving in both directions along the arcurate path. Each of the fine have a generally squared off top and preferably an outer area of harder rubber than the inner area. Each of the fins can be adjusted at the trailing edge to provide adjustable tensioning of the trailing edge.

Abstract: A joint is provided for a double bladed paddle which allows for the angle between the blades to be adjusted relative to one another. The joint is formed from joining a female body recessed into a first shaft with a male body extending from a second shaft. The female body encloses a spring mechanism abutted by teeth of a crown with receiving grooves. The male body has protuberances which fit within the receiving grooves leading to the spring mechanism which when pushed in by the male body allows the protuberances to move past the receiving grooves and rotate to slot into the pockets formed between the teeth of the crown.

Abstract: A paddle for stand-up paddle boards includes a paddle blade at a lower end of the paddle shaft and a sail assembly slidingly stowed within the shaft, with the sail deployed by sliding the sail assembly distally out of the shaft upper end. The sail assembly may include a sail and support frame. A method and system for transporting a user across water or other surfaces has a board for the user to stand upon and a paddle with sail slidingly deployed from inside a paddle shaft via an opening in the upper end. To propel via paddling, the user leaves the sail stowed within the shaft. The propel via wind, the user deploys the sail out of the shaft, places the blade onto the board upper surface, and angles the paddle and sail to catch the wind and propel the user across the water.

Abstract: The present invention relates to a watersport paddle blade comprising a throat configured to attach to a shaft, a power face attached to the throat, wherein the power face comprises a main channel beginning at or near the throat, extending along the center of the face and opening at a distal end of the blade, and a plurality of side channels connected to the center channel, wherein the side channels are slanted and extend from the lateral edge inwardly toward the center channel and are angled downwardly toward the distal end of the blade.

Abstract: Disclosed is an improved kayak paddle with increased paddling efficiency, the paddle including one or more protrusions along the top and/or bottom edges of the paddle blades to impede the flow of water over the blades. In one aspect, the protrusions are on the top edges of the front faces of the blades and on the bottom edges of the rear faces of the blades to allow the same features to be facing the user upon a full one hundred eighty (180) degree rotation of the paddle about its axis. Alternate features such as integral drip ridges (minimizing water flow on a user's hands), integral leash ridges (for maintaining the location of the paddle rope or leash during use), paddle orientation indicators (to indicate the correct orientation of the paddle relative to the user during use), and reinforced blade tips (to increase blade buoyancy and minimize blade diving) may optionally be incorporated.

Abstract: A stand up paddle surfboard (SUPS) and associated paddle is provided. The SUPS may have up to two containers affixed generally towards the bow. A first container is designed to retain refuse and a second container is designed to retain game ball(s). The paddle includes a removable handle on a first side of a shaft and a paddle with a securable net and hook on the second side of the shaft. The securable net and hook may be employed to remove refuse found in the water and place such in the first container. The removable handle may be replaced with a game net permitting a host of ball toss games and the like to be played, using the second container to retain such balls. The SUPS and associated paddle may be modified for watersports as well as environmental cleanup activities.

Abstract: A water paddle comprising a first shaft having and a second shaft, a first cog collar located on an exterior surface of first shaft and having a first set of teeth extending radially from a mating end of first cog collar, a second cog collar located on an exterior surface of second shaft and having a second set of teeth extending radially from a mating end of second cog collar, second set of teeth mateable with first set of teeth to prevent rotational movement between shafts, a ferrule extending from a free end of second shaft, a snap button-alignment tab assembly comprising a bushing, a wavy washer, and a snap button base located within ferrule and a snap button skirt connected to free end of ferrule and an alignment tab fixed within first paddle shaft downstream of a set of corresponding holes of first paddle.

Abstract: A paddle converter for securing two singled bladed canoe paddles to form a single twin bladed kayak paddle. The paddle converter includes a body configured to structurally support a first canoe paddle and a second canoe paddle. The paddle converter also includes a groove on the body configured to receive the shaft of the first canoe paddle. The paddle converter further includes a grip match configured to match the grip of the first canoe paddle. The paddle converter additionally includes a fastener configured to secure the shaft of the first canoe paddle within the groove.

Abstract: An auxiliary oar blade assembly is provided for attachment to a shaft of an existing oar opposite an existing blade to provide a two bladed oar. The assembly includes a blade and an elongated connector coupled to and extending from the blade. A channel extends through the connector. The channel is configured for receiving a shaft of an oar therein. A coupler is coupled to the connector securing the connector to the shaft of the oar.

Abstract: A paddle apparatus for standup paddling of surfboards or like water craft, having a plurality of hand grip portions rotatably mounted relative to the paddle shaft, and a means of paddling whereby the operator can ergonomically paddle with greater power and control on either side of the water craft without breaking either hand grip. A further improvement includes using the handgrip in the position perpendicular to the paddle shaft to determine the blade position by feel and steer with greater torque. An alternative embodiment includes rotation of the grip itself, further reducing the twisting of the wrists and other joints.

Abstract: A buoyant apparatus system for use on a user's foot having an outer frame including a foot insert and a plurality of folding flaps. The outer frame is substantially rectangular having a tapered bow end. The outer frame has a bottom surface having a plurality of folding flaps extending downwardly therefrom to increase drag and folding parallel to the bottom surface to decrease drag. A foot insert is integrally coupled to the outer frame at the center for accepting the user's foot therein. A pair of paddle is used to increase propulsion and maintain stability.

Abstract: The present invention relates to a watersport paddle blade comprising a throat configured to attach to a shaft, a power face attached to the throat, wherein the power face comprises a main channel beginning at or near the throat, extending along the center of the face and opening at a distal end of the blade, and a plurality of side channels connected to the center channel, wherein the side channels are slanted and extend from the lateral edge inwardly toward the center channel and are angled downwardly toward the distal end of the blade.

Abstract: This invention relates to an apparatus and method for rowing by generating stored energy in stretchable, retracting members and using that stored energy to pull oars back to a neutral position.

Abstract: A water paddle comprising a first shaft having a blade end and a free end and a second shaft having a blade end and a free end, a first cog collar located on an exterior surface of first shaft and having a first set of teeth extending radially from a mating end of first cog collar and accessible to the user's fingers, a second cog collar located on an exterior surface of second shaft and having a second set of teeth extending radially from a mating end of second cog collar and accessible to the user's fingers, second set of teeth mateable with first set of teeth to prevent rotational movement between shafts, a ferrule extending from the free end of second shaft, a clip lip member located on an interior surface of the ferrule, and a spring tab mechanism located within an interior surface of first shaft and includes a body having corresponding resilient arms each having a displaceable tab supported thereon engageable with a set of push button holes located on first shaft.

Abstract: A paddle device. First and second paddle assemblies each have a paddle blade extending from a paddle end of a paddle arm so that the paddle structures each have a paddle blade end and a paddle arm end. A hand crankable crank shaft arrangement have a center and first and second ends and having handle segments. The paddle arm end of the first paddle structure is coupled to the first end of the crank shaft arrangement and the paddle arm end of the second paddle structure is coupled to the second end of the crank shaft arrangement. First and second handle grips are rotatably coupled to the crank shaft arrangement so as to permit the crank shaft arrangement to rotate with respect to the first and second handle grips when the crankshaft arrangement is cranked. This abstract is not to be considered limiting.

Abstract: The kayak paddle is a transformative device capable of becoming an oar or a paddleboard paddle. The kayak paddle includes a first paddle blade that includes a notched end on a distal end, which is characterized for use in pushing off of a stationary object. The first paddle blade also includes a pull notch that is oriented opposable of the notched end, and is suited for pulling action with respect to a stationary object. An extension shaft and a second shaft member are included in order to transform the kayak paddle to a paddleboard paddle. A second paddle blade is provided on the second shaft member and features a finger grip opening that enables an end user to articulate the device as a paddleboard paddle.

Abstract: A propulsion device includes a shaft and a paddle-like blade connected to a first end of the shaft. An electric motor is mounted on the paddle-like blade, and a propeller is attached to the electric motor. A power source electrically connected to the motor is also provided.

Abstract: This disclosure is directed to a paddle for a watercraft having an adjustable shaft with upper and lower telescoping shaft portions. A lever in the palm grip applies tension to a cable to compress a plug at the end of the upper shaft portion to frictionally engage the lower shaft portion.

Abstract: A stand up paddle surfboard (SUPS) and associated paddle is provided. The SUPS may have up to two containers affixed generally towards the bow. A first container is designed to retain refuse and a second container is designed to retain game ball(s). The paddle includes a removable handle on a first side of a shaft and a paddle with a securable net and hook on the second side of the shaft. The securable net and hook may be employed to remove refuse found in the water and place such in the first container. The removable handle may be replaced with a game net permitting a host of ball toss games and the like to be played, using the second container to retain such balls. The SUPS and associated paddle may be modified for watersports as well as environmental cleanup activities.

Abstract: An aquatic paddle includes a shaft having a first end and a second end, and a paddle blade rigidly coupled to the first end of the shaft. The paddle blade is constructed from a skeleton and a web spanning the skeleton. The skeleton includes a hub structure having a proximal end and a distal end, and a plurality of rod members. Each rod member is rigidly secured at the distal end of the hub structure. The proximal end of the hub structure is rigidly secured to the first end of the shaft.

Abstract: An improved paddle apparatus for standup paddling of surfboards or like water craft, having a plurality of hand grip portions rotatably mounted relative to the paddle shaft, and a means of paddling whereby the operator can ergonomically paddle with greater power and control on either side of the water craft without breaking either hand grip. A further improvement includes using the handgrip in the position perpendicular to the paddle shaft to determine the blade position by feel and steer with greater torque. An alternative embodiment includes rotation of the grip itself, further reducing the twisting of the wrists and other joints.

Abstract: Disclosed is a device for facilitating direct arm-and-leg tandem (quadrimanual) production of the power stroke in forward-facing rowing that allows the placing of the oars into the water for the power strode and the clearing of the oars from the water in the recovery stroke to be done with the arms independently of the legs. Starboard side pivotable vertical axis (100 and port side pivotable vertical axis (11) provide the means for starboard side off-set pedal bar (4) and port side off-set pedal bar (5) to pivot in a horizontal dimension along with starboard side off-set oar (6) and port side off-set oar (7). By pushing forward on the off-set pedal bars and off-set oars denoted, one engages the power stroke in rowing the device. By moving said pedal bars and oars backward, one repositions the oars in the horizontal dimension during the recovery stroke for a subsequent power stroke.

Abstract: A paddle for use in watersports is provided with shaft halves and blades at the end of each shaft half with a selectable offset angle between the blades. A joint connecting the shaft halves may include an interlocking coupling that maintains the offset angle of the blades, and that may allow a change in the offset angle of the blades. A biasing member may hold the interlocking coupling in the use configuration. The shaft halves may be moved axially apart to change the offset angle of the blades. All mechanisms for switching the interlocking coupling between the use configuration and the selection configuration may be located within the shaft halves. A retaining clip may be coupled between the first and second shaft halves to allow the selection configuration while preventing disassembly of the first and second shaft halves. A disassembly control can be provided independently of the angle selection.

Abstract: An improved paddle assembly is provided for use in operating a small watercraft. A paddle is comprised of a shaft and at least one blade attached to one end of the shaft. A floatation device has a hole therethrough to slidably engage the shaft of the paddle. During normal operation of the watercraft, the floatation device is positioned and stored adjacent the hands of the operator of the watercraft so as not to impede normal paddling of the watercraft; when the watercraft capsizes, the floatation device is slid along the shaft of the paddle to a position adjacent the blade to facilitate the return of the watercraft to the upright position by the performance of an Eskimo roll by the operator.

Abstract: A system for determining the magnitude of force applied to an oar by a rower as the oar is pulled through water includes a deflection sensor and a temperature sensor mounted on an oar shaft to determine deflection and temperature of a portion of the oar shaft during rowing. A processor connected to the deflection sensor and the temperature sensor receives signals indicative of deflection and temperature of the oar shaft and derives a force applied to an oar blade based on the deflection and temperature signals.

Abstract: An oar includes a retractable shaft with a blade and a grip connected to two ends thereof. A socket is connected to the shaft by a pin and includes a first toothed surface on the end surface of the socket. The grip includes a tubular portion which is mounted to the socket. A spring and a bolt are located in the socket, and the bolt is securely connected with the grip so that the spring is biased between the grip and the head of the bolt. The tubular portion of the grip includes a second toothed surface in an inner end thereof so as to be removably engaged with the first toothed surface of the socket.

Abstract: A paddle suitable for use with a kayak or like watercraft, the paddle comprising: (a) a tubular shaft extending from a first blade located at a first end to a second blade located at a second end; (b) a sleeve mounted on the tubular shaft, the sleeve having an outer surface; and (c) a lever extending along a curvature from a proximal end to a distal end, the proximal end being pivotably mounted to the sleeve, the lever comprising a lengthwise extending chamber having an opening provided on an upper wall of the lever and a closed end located remote from the opening and wherein the chamber communicates with a passage extending towards an entry located at the distal end, the lever being movable between a first position, wherein the lever is located proximate the outer surface of the sleeve, and a second position, wherein the distal end of the lever is accessible by the mouth of a user for allowing the user to blow in the entry for generating an airstream within the passage and the chamber such that sound is prod

Abstract: A hand grip is disclosed. The hand grip has a cross-sectional profile and an axial extent delimited by opposing ends thereof, in which a resilient extension portion is provided at one side of the cross-sectional profile, and which extends substantially the length of the axial extent.

Abstract: An arm extension apparatus includes a base having an elongate configuration. The apparatus includes a paddle coupled to the base and having proximal and distal portions, the paddle being slidably movable relative to the base between a retracted configuration in which the proximal portion is substantially received adjacent the base and an extended configuration in which the proximal portion is substantially extended from the base. An attachment member is coupled to the base and having a configuration complementary to the person's arm, the attachment member having a strap extending therefrom for removably securing the attachment member to the person's arm.

Abstract: This disclosure is directed to a paddle for a watercraft having an adjustable shaft with upper and lower telescoping shaft portions. A lever in the palm grip applies tension to a cable to compress a plug at the end of the upper shaft portion to frictionally engage the lower shaft portion.

Abstract: The invention is the addition to traditional shafts used for stand-up paddling that normally have a standard paddle at one end of the shaft and a handle at the other end of the shaft. The invention incorporates a second paddle attached to the shaft at the location of the handle. The paddle may have an interior opening surrounding a portion of the handle to enable a user to grasp the handle with a user's hand. Alternatively, the body of the paddle can be oriented at an angle relative to the handle so that a gap is formed between an interior surface of the body of the paddle and the handle so that the handle can be grasped by a user's hand with the user's fingers resting in the gap.

Abstract: A paddle including a shaft having a distal end, the distal end ending in a protrusion; and a paddle blade having a proximal end joined to the distal end of the shaft, the proximal end having an inner surface and at least one internal longitudinal slot disposed adjacent to the inner surface engaged with the protrusion.

Abstract: An apparatus and method for allowing a fisherman to utilize an oar or paddle while maintaining possession and control of a fishing pole rod and fishing reel. The oar or paddle is designed to be an integral member with or affixed to the fishing pole rod and fishing reel without altering the full movement and operation of the fishing pole rod and fishing reel.

Abstract: FIG. 1 depicts a sleeve arrangement 10 fitted to the shaft 12 of an oar. The sleeve arrangement includes an outer sleeve consisting of first sleeve shell 14 and second sleeve shell 16. The sleeve arrangement 10 further includes an inner sheath 17 consisting of first sheath shell 18 and second sheath shell 20. Should a user wish to change the sleeve, it can be replaced by the user using common hand tools. After removing the collar, the fasteners holding the sleeve shells 18, 20 are undone and the sleeve shells 18, 20 may then be removed from the sheath 17. After fitment of new sleeve shells, the fasteners and collar are reattached and the oar is ready for use. Advantageously, it is not necessary for a technician to perform the change.

Abstract: A watercraft (1) includes at least two oar handles (3a, 3b) which are designated to be actuated by a passenger of the watercraft in order to propel the same. A considerably expanded functionality is achieved in such a way that the oar handles (3a, 3b) are connected to a control unit which controls at least one power-actuated driving motor (6a, 6b; 7; 16a, 16b; 26a, 26b) of the watercraft depending on the actuation of the oar handles (3a, 3b).

Abstract: A push-paddle has a buoyant wedge-shaped push-block attached to the bottom end of a pole. When pressed into the water wedge-end first, the push-block provides high drag and buoyant force for the user to push against and propel a watercraft using a punting-like motion. At the end of the power stroke, the wedge slips easily and quickly up out of the water allowing the user to recoil the push-paddle through the air.

Abstract: A paddle and a method for using the paddle are described. The method and system include providing a first resistance surface and at least a second resistance surface. The first resistance surface includes at least one aperture therein. The second resistance surface(s) are coupled with the first resistance surface in a plurality of configurations. The plurality of configurations has a plurality of resistances.

Abstract: A paddle including a shaft having a distal end, the distal end ending in a protrusion; and a paddle blade having a proximal end joined to the distal end of the shaft, the proximal end having an inner surface and at least one internal longitudinal slot disposed adjacent to the inner surface engaged with the protrusion.

Abstract: A system for determining the magnitude of force applied to an oar by a rower as the oar is pulled through water includes a deflection sensor and a temperature sensor mounted on an oar shaft to determine deflection and temperature of a portion of the oar shaft during rowing. A processor connected to the deflection sensor and the temperature sensor receives signals indicative of deflection and temperature of the oar shaft and derives a force applied to an oar blade based on the deflection and temperature signals.

Abstract: An improved paddle apparatus for standup paddling of surfboards or like water craft, having a plurality of hand grip portions rotatably mounted relative to the paddle shaft, and a means of paddling whereby the operator can ergonomically paddle with greater power and control on either side of the water craft without breaking either hand grip. A further improvement includes using the handgrip in the position perpendicular to the paddle shaft to determine the blade position by feel and steer with greater torque. An alternative embodiment includes rotation of the grip itself, further reducing the twisting of the wrists and other joints.

Abstract: An improved oar that has an oarlock assembly, which holds the main oar shaft and parallel link in line with each other while allowing them to pivot fore and aft and up and down; an oar shaft; a parallel link; and a knuckle. The knuckle positions the handle via a sleeve, and the parallel link that is positioned by a pivot on the end of an arm. Additionally, there is a universal joint between the oar shaft and the handle, in line with the parallel link pivot, that allows the blade to be feathered while keeping the handle perpendicular to the rowing shell at every point in the stroke.

Abstract: A flow restrictive edge profile applied to a fluid propelled/propelling implement and for creating increased driving force as a blade interacts with a fluid medium. An arcuate blade face pattern, including such as a “horseshoe” or modified “U” shape profile, is applied to one or two opposite faces of an oar design, with a deepened and inner extending connecting (arcuate) edge establishing a maximum of resistance (and a corresponding minimization of fluid losses) when traveling through the fluid medium. This in turn maximizes the amount of driving efficiency (e.g. thrust) to the article, such as during it being physically translated through a water medium or acted upon by a wind stream medium. The flow restrictive edge profile also contemplates application into one more blades associated with such as a rotating propeller or a driven windmill.