Abstract: A solar powered electric ship system comprises an electric ship, multiple inflatable barges, and multiple inflatable non-imaging non-tracking solar concentrator based concentrating photovoltaic systems. The entire system is configured with the multiple inflatable non-imaging non-tracking solar concentrator based concentrating photovoltaic systems mounted on the inflatable barges, and with the inflatable barges mechanically and electrically connected to the electric ship. When in operation, the electric ship dragged the barges to navigate together with it, and have the inflatable non-imaging non-tracking solar concentrator based photovoltaic system to power it. The configuration dramatically reduce the battery bank size of the electric ship and make the portable floating concentrating photovoltaic system ultra-high efficiency, extremely low cost, and super light.

Abstract: An apparatus for mounting a pedal propulsion system to a watercraft, having a mount portion configured to be attached to the watercraft, a link support, and upper and lower links pivotally connected to the link support and to the mount portion. The link support and upper and lower links are configured to form part of a four-bar linkage arrangement and to simultaneously move together between an extended, operable position for operating the propulsion system, and a retracted, stowed position elevated above the extended position, for loading, transporting, unloading and/or launching the watercraft in the water. A column clamp is configured for selectively fixing a drive column of the pedal propulsion system to the link support, wherein the drive column, the link support and the upper and lower links are configured to simultaneously move together between the extended and retracted positions.

Abstract: Provided is a portable foldable aquaplane, comprising a buoyancy device (9), a handle (2), a pedal board (3) and a seat cushion (5), wherein the buoyancy device (9) comprises a head buoyancy component (1) and a body buoyancy component (13); the head buoyancy component (1) is connected to a front end of the body buoyancy component (13) in a foldable manner; the handle (2) is connected to the head buoyancy component (1) via a first telescopic rod (14); and the seat cushion (5) is connected to the body buoyancy component (13) via a second telescopic rod (15). By adjusting the height of the handle (2) and of the seat cushion (5), the aquaplane is not only capable of satisfying the requirements of riding on water in a standing state, but is also capable of satisfying the requirements of riding on water in a sitting state.

Abstract: A watercraft includes a chassis, a drive, a hydrofoil and a drive transfer arm. The drive is operatively connected to a first end of the drive transfer arm. The hydrofoil is pivotably connected to a second end of the drive transfer arm. The watercraft is configured such that operation of the drive causes the hydrofoil to oscillate, to provide thrust. The hydrofoil is pivotably connected to the second end of the drive transfer arm with an adjustable connection mechanism. The adjustable connection mechanism is such that the distance between a leading edge of the hydrofoil and a rotational axis of a pivoting connection point to the drive transfer arm is adjustable.

Abstract: A water bike has a frame supported on first and second spaced apart pontoons or similar floatation elements. Pedals are attached to cranks on a front sprocket rotatably supported on the frame. A chain or belt extends around the front sprocket and around a rear sprocket on a gearbox. An outdrive is supported on the gearbox and pivotal about a vertical axis relative to the gearbox. The combined outdrive and gearbox are pivotable about a horizontal axis relative to the frame. A propeller on the outdrive is mechanically linked to a first gear in the gearbox, with the first gear meshing with a second gear attached to the rear sprocket. A steering bar is pivotally attached to the frame. A steering linkage connects the steering bar to the outdrive, for pivoting the outdrive to steer the water bike.

Abstract: The invention relates to a hybrid bicycle that is driven by muscle power and electrical energy, in particular a series hybrid bicycle comprising a generator whose torque can be set by a control device and dependent upon the construction is limited to a maximum generator torque, and also pedals that are connected to the generator so as to apply a pedal torque to the generator by a rider so as to drive the generator, and also a drive motor that is connected to a drive wheel of the bicycle so as to drive the drive wheel, and also a battery for supplying the drive motor.

Abstract: A vehicle (20) consisting of a frame (22) with a pair of paddles (72) extending longitudinally and rotatably supported by the frame (22) in pendulum fashion for swinging movement between an extended position engaging the surface and a retracted position moved vertically out of engagement with the surface. A pair of foot platforms (74) are operatively connected to the paddles (72). A pair of depressors (84) interconnects the foot platforms (74) and the paddles (72) to rotate the paddles (72) between the extended position and the retracted position. The paddles (72) include a propulsion bar (86) and an oar (88) connected by a lost-motion connection to slide relative to one another between the extended position and the retracted position. The oars (88) have a fin-shape to propel the vehicle (20) over water and include a striker (90) to propel the vehicle (20) over land. The vehicle (20) allows movement over a surface of water and land using an elliptical motion similar to the natural motion of walking.

Abstract: Personal watercraft and watercraft power systems that include a power pod for supporting a power plant and a propulsion unit. An engine or an electric motor and a pump assembly are enclosed in the power pod. One or more sponsons removably cooperate with the power pod via a mechanical interface, such as dovetail joints and/or interlocking channels, formed between the power pod and the respective sponsons. A plurality of tool-lessly operable mechanical interfaces, locking mechanism(s), and fluid or electrical signal connectors allow the sponson(s) to be selectively secured to the power pod such that the resultant watercraft is modular and transportable by a single person when necessary.

Abstract: A surfboard for supporting a surfer to swim on or below surface of water includes a supporting body having an upper surface, a lower surface, a leading edge and a trailing edge. The leading edge including a protrusion contoured for supporting the surfer's face and the upper surface to support the surfer. The surfboard also includes a cover plate mounted on the lower surface underneath the leading edge, a propeller mounted on the lower surface underneath the leading edge, a steering system mounted on the lower surface underneath the leading edge, and a safety enclosure for protecting face of the surfer. The surfboard may be provided with wings extensible from the sides of the body to provide support and stability to surfers of larger size.

Abstract: An aquatic device, such as a paddle board or surfboard, that includes a propulsion device that utilizes paddle wheels positioned on either side of the board, wherein the paddle wheels are driven by foot operated drive mechanism that utilizes elliptical type of pedaling by the user, and further includes hand controlled rudders to control the direction of travel of the device.

Abstract: A surfboard for supporting a surfer to swim on or below surface of water includes a supporting body having an upper surface, a lower surface, a leading edge and a trailing edge. The leading edge including a protrusion contoured for supporting the surfer's face and the upper surface to support the surfer. The surfboard also includes a cover plate mounted on the lower surface underneath the leading edge, a propeller mounted on the lower surface underneath the leading edge, a steering system mounted on the lower surface underneath the leading edge, and a safety enclosure for protecting face of the surfer. The surfboard may be provided with wings extensible from the sides of the body to provide support and stability to surfers of larger size.

Abstract: A portable, human-powered, catamaran styled water cycle that can be used by users of all ages. The water cycle contains a left pontoon, a right pontoon, a steering mechanism, a propelling mechanism, a seat, a left wheel, and a right wheel. The steering mechanism has a rudder which is controlled with the use of a steering handle. The propelling mechanism has a propeller which is powered by pedaling. The left pontoon and the right pontoon are both foldable such that the water cycle can be extended or collapsed conveniently. The seat is cushioned and also includes a back rest which can be used as a second seat when required. The left wheel is mounted onto the left pontoon and the right wheel is mounted onto the right pontoon. Therefore, the water cycle can be dragged with the use of the wheels for storing purposes.

Abstract: A pedal propulsion system for a transportation conveyance comprises a pedal drive assembly having a teethed synchronous drive belt engaged between a drive sprocket and a transfer sprocket. The rotational axes of the transfer sprocket and the drive sprocket are oriented at an angle of up to 90 degrees from one another. The rotation of the transfer sprocket is conveyed to a propeller drive assembly mounted at the rear of a water craft by an elongated rotary shaft and a flexible transmission drive cable to facilitate removable of the propulsion system from the transportation conveyance.

Abstract: The flotation device with hand-operated propulsion structure comprises a hull with right and left hand cranks. The hand cranks are each connected to rotate its own propeller so that steering is achieved by different cranking and propulsion is achieved by cranking on both manual cranks. In addition to the hull with cranks and propellers, a survival suit is provided with corresponding attachment for the securement of flotation and propulsion devices thereto.

Abstract: A pedal propulsion system for a transportation conveyance comprises a pedal drive assembly having a teethed synchronous drive belt engaged between a drive sprocket and a transfer sprocket. The rotational axes of the transfer sprocket and the drive sprocket are oriented at an angle of up to 90 degrees from one another. The rotation of the transfer sprocket is conveyed to a propeller drive assembly mounted at the rear of a water craft by an elongated rotary shaft and a flexible transmission drive cable to facilitate removable of the propulsion system from the transportation conveyance.

Abstract: An ergonomic pedaling apparatus for travel in water, enabling a user to practice swimming skills, comprising: an ergonomic supporting body for supporting the upper part of the user's body when frontally mounted over the body, where the body includes a curved triangular structure having three vertices constructed by three connected chassis members; three floatation units each connected to a separate vertex of the body; and a pedaling assembly comprising two scooped pedals enabling the user to progress in water by hand pedaling the pedals. The floatation units include: a first and a second back floatation units each comprising a float, where the floatability of the back floatation units is substantially equal and a third front floatation unit comprising two float parts vertically positioned one on top of the other. The floatability of the combined floats of the third floatation unit may be substantially equal to the floatability of each of the back floatation units.

Abstract: An ergonomic pedaling apparatus for travel in water, enabling a user to practice swimming skills, comprising: an ergonomic supporting body for supporting the upper part of the user's body when frontally mounted over the body, where the body includes a curved triangular structure having three vertices constructed by three connected chassis members; three floatation units each connected to a separate vertex of the body; and a pedaling assembly comprising two scooped pedals enabling the user to progress in water by hand pedaling the pedals. The floatation units include: a first and a second back floatation units each comprising a float, where the floatability of the back floatation units is substantially equal and a third front floatation unit comprising two float parts vertically positioned one on top of the other. The floatability of the combined floats of the third floatation unit may be substantially equal to the floatability of each of the back floatation units.

Abstract: A propulsion system for watercraft for personal enjoyment that incorporates human power with electric motor assistance, energy storage and optional solar power to achieve increased watercraft speeds and/or reduced pedaling effort. Control electronics enable operator-adjustable electric motor assistance to the propulsion, thereby providing flexible pedal cadences and efforts and enjoyment for a wide variety of operators. An optional photovoltaic solar panel augments the power generation to extend travel time with motor assistance, and recharges the energy storage system. This invention enables a pleasure watercraft that is simultaneously lightweight, low cost, low maintenance, environmentally friendly with zero pollution, ultra-low noise, and thrilling to operate, while simultaneously providing a means of enjoyable exercise for operators of nearly all abilities.

Abstract: A propelling device includes a driving unit disposed in a housing. The driving unit includes first and second bevel gears connected coaxially and respectively to upper and lower ends of a vertical driving shaft, a third bevel gear disposed on and co-rotatable with a transverse driving shaft and meshing with the first bevel gear, and a fourth bevel gear connected fixedly and coaxially to a front end of a longitudinal driving shaft and meshing with the second bevel gear. An impeller is disposed on a rear end of the longitudinal driving shaft extending outside the housing, and is co-rotatable with the longitudinal driving shaft. Two operating crank members are connected fixedly and respectively to opposite ends of the transverse driving shaft, and are co-rotatable with the transverse driving shaft.

Abstract: The present invention is pedaling apparatus (PA) for a watery environment. The PA may comprise a supporting body connected to at least one pedal. At least part of the supporting body supports the carrying of a user's weight. Part of the body and the position of the pedal in relation to said body may be designed to support the user's weight and to maintain the pedals' rotation movement inside the water throughout the span of the rotation movement, once the user applies his/her weight upon the PA.

Abstract: The invention relates to a pedal boat drive comprising at least one pedal crank and a drive train for transferring drive energy produced by the pedal crank to a means of propulsion, e.g. a propeller. At least one flywheel, which is mounted on a free-running axle, is placed in the drive train between the pedal crank and the means of propulsion. Drive energy produced by the pedal crank is transferred from the pedal crank to the flywheel, which is mounted in a free-running manner, and is transferred from said flywheel to the means of propulsion. The aim of the invention is to further develop a pedal boat drive of this type that enables a pedal boat to be used as an item of sports equipment. In doing this, the pedal boat should behave in water similar to a bicycle on land with regard to the feeling of riding.

Abstract: A pedal powered catamaran has a pair of pontoons connected by a cross platform whereat an operator sits and rotates a pair of pedals which power the catamaran via a drive mechanism, the drive mechanism allowing the operator to gain mechanical advantage. One or both of the pontoons has a seat molded directly into the upper surface thereof in order to accommodate additional passengers onto the catamaran. Back rests and cup holds are also provided.

Abstract: A human-powered generator system for electric watercycles with a control means whereby the perceived mechanical properties of the pedal mechanism and electric pedal-powered generator are adjustable by the operator. The invention provides a means whereby the rotational inertia and damping of the input pedal mechanism, including generator, as perceived by the operator can be increased or decreased as desired. The control means with further properties such that the input pedal mechanism as perceived by the operator can be made to mimic that of bicycle; i.e., with large inertia when pedaling in the forward direction, a very low inertia when pedaling in the reverse direction, and a freewheeling clutch mechanism whereby the large inertia is disengaged when not pedaling in the forward direction with a forward torque. The control means further enable the electric watercycle to be perceived as coasting through the water when the operator takes a momentary break from pedaling, much like that of a bicycle coasting.

Abstract: A watercraft incorporating electrical power generation from human kinetic power, and electrical energy storage to enable amplification of human-power to propulsion power to achieve increased watercraft speeds. Control electronics enable operator-adjustable variable electronic gearing, and an assortment of torque vs. speed loading characteristics of the generator, thereby providing optimal pedal cadences and enjoyment for a wide variety of operators. An optional photovoltaic solar panel augments the power generation to extend travel time with power amplification, and recharges the energy storage system. This invention provides a pleasure watercraft that is simultaneously lightweight, low cost, low maintenance, environmentally friendly with zero pollution, ultra-low noise, and thrilling to operate, while simultaneously providing a means of enjoyable exercise for operators of nearly all abilities.

Abstract: A pedal driven aquatic propulsion system comprises a driven sprocket located substantially vertically beneath a drive sprocket. The planes of rotation of the drive and driven sprockets are disposed substantially at right angles to one another. An endless chain drive transmits power from the drive sprocket to the driven sprocket, operating in a twisting three-dimensional orientation as it loops around the sprockets. A pivoting, self tensioning idler arm is adjustably mounted on a frame that encloses the propulsion drive, and comprises an idler sprocket disposed in rotatable contact with the chain drive to maintain the chain under constant tension. The plane of rotation of the idler sprocket is tilted and offset from the planes of rotation of the drive and driven sprockets. The constantly tensioning system comprises a series of stationary and flying idlers aligned to the natural twist of the chain.

Abstract: A collapsible pontoon paddle boat that includes inflatable pontoons that may be deflated, and a series of frame pieces that may be disassembled. The frame structure includes metal tubes that snap into anchors that are integrally formed on the sides of the pontoons. A removable seat is provided for the boat that is supported by a series of cinch straps that allows fore and aft sections of the seating surface to be adjusted up and down relative to the pontoons. A plurality of mounting locations may be provided for removable cranks and paddle wheels so that their position may be adjusted relative to the seat. A rudder for the pontoon paddle boat is connected to the frame for the pontoon paddle boat by a friction connection and includes a pivot mechanism that permits folding to a position where it extends parallel to the boat.

Abstract: A water bicycle has a body and a drive system connected to the body. The body is made from a material that allows the body to float on water. The drive system includes a propeller that is positioned below the body, a shaft having a first end coupled to the propeller, a drive mechanism coupled to the second end of the shaft, and a control coupled to the drive mechanism. The water bicycle can also include a steering system operatively connected to the body, the steering system having a rudder, a handle, and a link assembly operatively coupling the handle and the rudder.

Abstract: Disclosed is a bicycle accessory generally comprised of at least one pontoon, a frame, front bicycle mounting hardware and rear bicycle mounting hardware, and a propulsion mechanism. A common bicycle is mounted on the front bicycle and rear bicycle mounting hardware and the combination placed on water deep enough to enable floatation of the watercraft, a bicycle and a rider thereupon. A rider climbs propels and directs the watercraft in the manner customary for bicycles on land.

Abstract: A manually powered recreational watercraft comprises a hull and a pair of paddle wheels independently mounted on opposed sides of the hull. Each paddle wheel comprises a plurality of vanes circumferentially distributed on a semi-spherical hub having an inboard flange. Each paddle wheel has a buoyant structure to provide additional lateral floatation stability to the watercraft. The vanes, the hub and the inboard flange of each paddle wheel are configured so that, upon rotation of the paddle wheel, water bubbles trapped between submerged adjacent vanes are channeled upwardly to the water surface whereat the bubbles burst and provide audible sounds. Safety hand grips are provided in the underside of the hull to help a user to pull himself on the hull in the event that the watercraft capsized. A floating windshield is mounted to the hull so as to be automatically separated therefrom upon capsizing of the watercraft.

Abstract: A pedal-powered watercraft comprises a unitary hull having an upper wall extending from a bow portion to a stern portion of the watercraft and a pair of spaced hollow sponsons located on either side of the upper wall. The upper wall together with inner walls of the sponsons form a tunnel that opens generally downwardly and extends from the bow portion to the stern portion of the watercraft. A deck is connected to the hull and includes an elongate opening that defines a cockpit area for receiving an occupant. A seat is located in the cockpit area and a pedal assembly is connected to the hull forwardly of the seat. The pedal assembly includes a pivotal pedal tower and a pair of pedals rotatably mounted on the pedal tower. The pair of pedals are operably connected to drive the propeller during pedal rotation.

Abstract: A pedal boat comprises an integrally molded hollow hull having an upper surface where water passengers can be seated. The hull is provided with drain holes to conduct water away from the pedal boat. A steering assembly and paddle wheel assembly are mounted to the hull. Each paddle of the paddle wheel assembly has a terminal portion which is displaceable between a rest position, wherein the terminal portion extends at an angle to the plane of the paddle to provide a more vertical entrance angle of the paddle in the water, thereby reducing the noise factor, and a loaded position in the water, wherein the terminal portion extends in the plane of the paddle to provide a greater thrust.

Abstract: The apparatus has front and rear floatable members pivotally coupled together such that the two members may turn relative to each other. A seat is coupled to the rear member for supporting a person. Paddles are coupled to a paddle shaft supported by the front member. Pedals are coupled to the paddle shaft for rotating the paddles shaft and hence the paddles for movement of the paddles through the water for moving the apparatus in the water. In the preferred embodiment, a paddle support member is coupled to opposite ends of the paddle shaft and paddles are coupled to the outward sides of the paddle support members. In another embodiment, two rods are pivotally coupled to opposite sides of the rear end of the front member respectively. Paddles are coupled to the lower ends of the two rods respectively. Each of the paddles includes two plate members pivotally coupled to the lower end of its rod.

Abstract: The present invention is for a recreational water vessel that may by operated driven by a manually operated propeller and drive system or it may be driven by wind under sail. The vessel includes two boards mounted to a main frame. Each board has a concave shaped bottom surface and an inner side surface that is vertically disposed with respect to the surface of the water. The drive system operates two propellers simultaneously and/or independently. A key mechanism may be biased between a position to operate the propeller simultaneously and independently. The vessel has a mast that is mounted toward the rear or stern of the main frame. A boom is mounted forward of a seat. A sail has a top mounted to the mast and a clew mounted to the boom. The sail is triangular such that a fold extends from the boom to the mast forming two halves of the sail.

Abstract: A watercraft has floats supporting a bicycle-type frame having handlebars connected to a rudder to steer the watercraft. Side boards located on opposite sides of the frame are mounted on cross bars which support the frame on the floats. A chain and sprocket foot operated drive is connected to a shaft journaled to a housing accommodating a power transmission for rotating a propeller. A chain guard is located on opposite sides of the chain connecting the shaft and foot operated drive. The housing is movable between a down location wherein the chain is retained in a tension condition to an up location wherein the chain is in a loose condition.

Abstract: The water bicycle has three basic components: an elongated floatation board, a propulsion and seat unit which is releasably connectable to a central portion of the board, and a steering unit which is also releasably connectable to the board, in front of the propulsion and seat unit. These two units are respectively inserted into an opening and a bore provided in the board and are releasably locked therein by snap connectors of the self-binding type. Such locking makes the components quicker and easier to assemble and dissemble.

Abstract: The apparatus has front and rear floatable members. A main shaft is fixedly coupled to the rear end of the front member and extends upward wherein it has an upper portion defining a pivot axis. A connecting member is fixedly coupled to the front end of the rear member and extends forward and upward. The connecting member has a forward connecting portion comprising an aperture through which the upper portion of the main shaft extends such that the two members may turn relative to each other. Handle bars are connected to the main shaft. A seat is coupled to the rear member for supporting a person. Paddles having inner ends are coupled to a paddle shaft. A support is coupled to the front member for supporting the paddle shaft and paddles for rotation about a paddle axis transverse to the pivot axis.

Abstract: The steering of a human powered pontoon aquatic vehicle is improved by arranging the pontoons in three articulated sections. The forward and aft pontoon sections are rotated in reciprocal directions with the forward sections being rotated in the direction of the desired turn. The vehicle includes a support frame attached to the forward and aft pontoon sections upon which a seat is mounted. A central frame member attached to the central pontoon is shifted laterally with respect to the support frame in order to rotated the forward and aft pontoon sections. The forward and aft pontoon sections are connected to the central pontoon section by interlocking hinges which permits convenient disassembly of the vehicle for transportation.

Abstract: A unicycle for operation in water comprised of a frame having buoyancy pads disposed therein. The frame has a yoke portion. The yoke portion has a pair of extending arms. A hollow wheel has an intake opening formed through a central portion thereof. The hollow wheel has an impeller mechanism disposed therein. The hollow wheel has an exhaust pipe tangentially integral therewith extending outwardly therefrom. The hollow wheel is positioned between the pair of extending arms of the yoke portion. A pair of pedals rotatably couple the hollow wheel to the pair of extending arms of the yoke through the intake valve opening. A foam padded seat portion is secured to the frame.

Abstract: A kayak having a cockpit containing a seat and a set of rotatable of pedals, the kayak propelled by a propeller, the propeller driven via a linkage by the set of rotatable pedals. Preferably, the rotatable pedals are mobile fore and aft substantially parallel to a center line of the kayak, and the drive shaft to the propeller is able to be extended and retracted to maintain the transmission of power and rotation from the rotatable pedals to the propeller. Also preferably, the cockpit containing the seat is molded into an upper deck of the kayak such that a hip of a user is substantially fully below the upper deck, and the cockpit has substantially no overhangs, such that, after capsizing and righting of the kayak in water, substantially no water is retained in the cockpit. The kayak also preferably includes a torque-tube steering system that permits a user to steer with either hand, and without interrupting the propulsion of the kayak on the water.

Abstract: A light weight and portable pond boat. The boat includes a frame designed to be flexible and readily disassembled. The frame is supported on a pair of inflatable pontoons and can be positioned along their length, without requiring deflation, to adjust the trim of the boat. A propulsion mechanism is removably mounted to the frame and includes a set of pedals which drive a propeller. The angle at which the propulsion mechanism is carried by the frame is also adjustable to vary the boat's draw requirements. The propulsion mechanism includes a mechanism that enables it to "kick-up" when a submerged object is contacted, lessening damage to the propeller. A steering mechanism and an adjustable seat are also removably mounted to the frame. With all of its components being detachable, capable of being disassembled or deflated, the boat can be packed within a motor vehicle enhancing transportation and storage.

Abstract: A watercraft has floats supporting a bicycle-type frame, having handlebars connected to a rudder to steer the watercraft. A chain and sprocket foot operated drive is connected to a shaft journaled to a housing accommodating a power transmission for rotating a propeller. The housing is movable between a down location, wherein the chain is retained in a tension condition to an up location, wherein the chain is in a loose condition.

Abstract: A paddle boat includes wheels at the sides of the boat. The paddle wheels have vanes and a central rim. The rim is used to propel the boat on land. The boat has seats in front of and behind peddles used to drive the wheels. The peddles have front and back faces which upwardly extend toward one another.

Abstract: The improved watercraft of the instant invention includes design advantages such as solidly connected arm drive handles to augment power from the drive pedals; a fully pivoting drive assembly which pivots along with the steering mechanism; an angularly pivotable propeller, pivotable toward the outside pontoon during a turn to assist in turning; a compact structure for transmitting mechanical power from the pedals and the arm drive handles to the propeller; and other design aspects.

Abstract: A manually operated propulsion device is provided for a canoe having a hull with a pair of gunwales, a seat extending directly under the gunwales for a person to operate the device and a thwart spaced away from the seat, extending directly under the gunwales. The device is two propelling mechanisms, in which each propelling mechanism consists of a structure for rotatively securing a drive shaft between the seat and the thwart of the canoe, so that the drive shaft will extend transversely over one of the gunwales of the canoe. A paddle assembly is transversely connected to an outer end of the drive shaft. An apparatus is for manually rotating an inner end of the drive shaft by the person sitting on the seat in the canoe, so that the paddle assembly will contact water thereabout to propel and steer the canoe through the water.

Abstract: A portable personal floatation device for water sports such as fishing and the like is constructed of a light material such as styrofoam and has a main cross panel with an opening for a user to fit through so the floatation device surrounds the user. The device is designed to be easily accessible for the user, with a door provided on a side panel. The central opening in the main panel of the device accommodates the occupant to carry the device and wade into the water, and as the device begins to float, the occupant may sit on the main panel of the device.

Abstract: The present invention provides a paddle assembly particularly designed for attachment to a canoe. The paddle assembly comprises a plurality of paddle members at opposite ends of the assembly, a central crank with sideways extending drive shafts to the paddle members, a pair of spaced apart gunwale clamps through which the drive shafts are rotatably fitted and an adjustable cinch strap between the gunwale clamps for wrapping beneath the canoe and cinching the gunwale clamps down onto the canoe to secure the paddle assembly in position.

Abstract: The watercraft has a catamaran hull system with parallel rear pontoons pivoted for side to side oscillation from the trailing end of front pontoons. A rigid frame interconnects the front portions, and back support post is pivoted to both the frame and to linkage interconnecting the rear pontoons, so that the operator can lean to either side to pivot the back support post and turn the boat in the direction he is leaning. Bicycle pedals rotatably carried on the front of the operator support frame, drive a propeller to propel the boat, and the foot pedaling action may be augmented by lines secured to the pedals so the operator can pull each pedal manually on return.

Abstract: A multipurpose and inflatable raft mainly composed of an inflatable circular raft unit, an inflatable shperical raft unit and an inflatable back seat, wherein said circular raft unit comprising several retainer plates for the connection with the retaining rings of the spherical raft unit so as to form a raft of high buoyance, and by means of fixtures attached to the circular raft unit for the fixation of pedalling device to form a pedalling raft, and by means of locating plates arranged bilaterally to the circular raft unit for the fixation of either oar for use in water or braking rod for use in snow-skiing as a braking device.

Abstract: A steering apparatus for an inflatable raft is disclosed. The apparatus substantially includes a transmission member having a transmission shaft formed thereon, a driving member having a driving shaft formed thereon which is co-axially arranged with the transmission shaft, a coupler having a central bore in the same shape as that of the transmission and driving shafts and movably sleeved thereon, a bias member biasing between the coupler and either of the transmission and driving members, and an actuating member for causing the coupler to move from an original engaged position to a disengaged position. When the user of the raft controls the steering apparatus at either side of the raft, the impellers at the side of the controlled apparatus will stop turning along with the manipulation of the pedals by the user so as to achieve an alternation of the moving direction of the raft.

Abstract: A foldable multipurpose bicycle includes a foldable main frame, a foldable handlebar assembly, a removable seat assembly, a pair of foldable pedal assemblies, a front brake assembly, and a foldable rear brake assembly. By using a pair of quick-release lock mechanisms, a pair of wheels can be connected quickly to the main frame to form a bicycle for riding on land. Alternatively, a front wheel and a tripod can be connected to the main frame to form an exercise bicycle. Or, a float assembly and a propeller assembly can be connected to the main frame to form an hydro-bicycle for riding on smooth surfaced water. The float assembly and the propeller assembly can be mounted removably on the rear portion of the main frame. The bicycle can be folded into a relatively small wheel-like unit which is capable of being conveniently pushed on the ground.