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7607959 Personal water craft to enable a user to walk on water  
A water craft allows a user to travel across a surface of water utilizing a natural walking motion, which employs arms and legs for propulsion similar to cross-country snow skiing. The water craft...
7604521 Aquatic exercise rowing machine  
A floating exercise rowing machine with two elongated floating assemblies that are kept at a parallel and spaced apart relationship with respect to each other by two transversal frame assemblies...
7530867 Portable canoe propulsion system  
A portable pedal driven propulsion device for a small watercraft ( 1 ) in which power from crank operated pedals ( 5 ) is transmitted to a pivotally mounted gearbox ( 32 ) or pulley system (...
7513808 Lever powered watercraft  
Embodiments of the disclosure include a flotation device or watercraft propelled through the water using a (ever powered propulsion system. The lever powered propulsion system includes human...
7462083 Water sport device  
A water sport device that enables a person to walk upright over the water consists of a boat-shaped lower part and an upper part between which a chamber is formed whereby the chamber has an inlet...
7434530 Collapsible self propelled hydrofoil device  
A collapsible or compactable hydrofoil device having front and rear foils, a support structure and a steering mechanism that may be collapsed into a compact size for transport and storage. The...
7371138 Boat having a pedal drive  
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...
7264521 Biomechanically correct pedal powered paddling system for small watercrafts  
The present invention relates to an accessory system simulating the biomechanical motion of manual paddling such as with a canoe or small boat. The system comprises: a watercraft attaching portion...
7232350 Human powered watercraft  
The watercraft described herein is a surfboard, skim board, dive board, or boat having a propelling fin driven by a standing surfer or boater with an upward and downward stroke which may be used to...
7207853 Method and apparatus of information systems for rowers  
A system ( 12 ) for providing information to a rower of a boat ( 10 ). The system includes a display unit ( 32 ) adapted to be coupled to the boat for displaying information to the rower and an...
7198529 Recreational watercraft with hydrofoil  
A recreational watercraft device consisting of a light hull in the shape of a sail board hull and on the bottom a strut hydrofoil assembly. The hydrofoil has a bilateral symmetric plan-form with a...
7048599 Manually propelled watercraft and propulsion mechanism  
A manually propelled watercraft for transporting a user on water, comprising a buoyant body having a longitudinal axis and a top side and a bottom side disposed adjacent to the water, a track...
7021232 Self propelled hydrofoil device  
A self-propelled hydrofoil device having front and rear foils, a support structure and a steering mechanism. The device is preferably fabricated with a flexible steering and/or support member that...
6997765 Vessel propelled by oscillating fin with control mechanisms  
A marine propulsion system emulates the fishes swimming motion yet is highly maneuverable as it permits changes from forward to reverse motion while underway. In other aspects, the propulsion...
6964589 Sculling boat assembly  
A sculling boat assembly is provided to control the traveling direction and drive a boat, and the sculling boat assembly installs a transmission mechanism on two hulls, connects an end of each...
6925956 Collapsible watercraft  
A collapsible watercraft for personal recreation. The collapsible watercraft includes a tubular frame that has a first portion and a second portion. Each of the portions are generally rectangular...
6869323 Pedal powered watercraft and equipment  
A water driven pedalcraft in which water propelling blades or paddles and a drive mechanism for driving the blades or paddles are associated with a framing system removably mounted atop a buoyant...
6843691 Sculling apparatus for small boats  
The present invention provides an apparatus for propelling a small boat through a body of water by use of a sculling action. The apparatus may be comprised of a vertical stock attached to a...
6595813 Feet-propelled water vehicle  
A feet-propelled water vehicle including a buoyant body having a user-supporting platform attached to a rigid frame secured to a pair of pontoons. A pair of propelling paddles is attached to the...
6579134 User-propellable sport board device  
A sportboard device ( 10 ) for movement over a fluid medium, including water, snow, or ice; including a plurality of pivotable fin assemblies ( 20 ) for transferring force from the user's feet to...
6500034 Water bicycle  
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...
6468118 Personal watercraft  
A personal watercraft that includes at least one stepper. Each stepper is pivotally associated with a propulsion member that is moveable in a generally vertical direction so that the propulsion...
6309263 Bicycle-type marine vessel  
A bicycle-type marine vessel including a long, narrow hull unstable in nature, that keeps balance on the water by means of a front rotating keel-propeller system that plays the role of a front...
6241565 Helical drive human powered boat  
A boat having a helical drive mechanism. The helical drive mechanism includes a slider engaged with a twisted screw or a cylinder having a helical slot or groove. The helical drive mechanism is...
6217398 Human-powered or human-assisted energy generation and transmission system with energy storage means and improved efficiency  
Efficient human-powered or human-power assisted energy generation and transmission system adapted for use with vehicles. The present invention can be utilized to achieve overall energy transmission...
6210242 Pedal-powered watercraft  
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...
6099369 Water vehicle  
A water vehicle includes at least first and second foils which are at least partially submersible in water. These foils are movable, at least to a limited extent relative to each other. Repeated...
6083065 Paddle wheel propulsion device kit  
A paddle wheel propulsion device kit is shown which can be removably affixed to a canoe and the like watercraft. A steering unit having a tiller and a rudder shaft detachable from an elbow with a...
6050864 Amphibious bicycle  
An amphibious bicycle intended to be highly efficient, safe and maneuverable forms of both land and water transportation. This achieved by the addition of a strong, rigid frame work, small paddles...
5997369 Human powered marine vehicle and method for the operation thereof  
A human powered marine vehicle is provided having a rigid front section and a flexible rear section which may be flexed at at least two point therealong. The arms and/or legs of one or more persons...
5938489 Leg-powered boat  
A new leg-powered boat for propelling through water by using one's legs. The inventive device includes a boat portion defined by an open upper end, a closed lower end, forward and rearward ends,...
5702274 Flotatation device propelled by human-powered ski machine  
A floatation device with propeller drive assembly and steerable rudder for use with a ski machine allowing an individual the ability to have a self propelled water craft. The device utilizes a ski...
5458514 Surfboards with paddlers  
In a surfboard assembly, the combination comprises a longitudinally forwardly elongated structure including flotation means, and having opposite ends; and means carried by the structures to support...
5445549 Water sporting equipment  
The equipment includes a device for floating on the surface of a body of water and for supporting at least one user, and footwear worn by the user for propelling the device through the water. The...
5441454 Water totter  
A water teeter-totter is provided having a seating member for two or more persons. The seating member is pivotally mounted to a floating, buoyant support member, such as one defined by a pair of...
5385497 Water exerciser  
Apparatus for supporting the human in water includes floats for resting on the water and a structure for supporting the human. A structure is affixed to the floats and the human can use his feet or...
5383675 Drive and control mechanisms for human powered vehicles  
A human powered mechanism for propelling a wheeled land vehicle, a water vehicle (a boat or hydroplane) using either a water screw or a jet of water or an ultra-light aircraft with an air screw....
5316508 Water bicycle  
A human-propelled water bicycle suitable for training or recreative purposes. The water bicycle has two steerable front pontoons and two rear pontoons fixed to a main frame substantially similar to...
5308268 Humanly operable, recreational, readily disassemblable water cycle  
To permit rapid assembly and disassembly of the water cycle so that, when disassembled, it can be stored or transported in minimum space. The cycle, which has at least three flotation bodies (2a,...
5217398 Pedal operated catamaran  
A pedal operated catamaran includes a pair of side-by-side buoyant hulls, and a rigid frame releasably mounted to the hulls in one of two alternative positions, to maintain the hulls parallel to...
5192237 Aquatic ski with human propulsion generated by deambulatory action  
An aquatic ski for human propulsion generated by deambulatory action having a floatable hull and a propulsive oscillating fin assembly. The fin assembly includes a foot seat pivotally connected to...
5181872 Emergency propulsion device  
The device is an alternative to the conventional paddle or oars, and comprises a collapsible scoop and a handle-shaft. The scoop has top and bottom panels 14,16, hinged together along one edge 18,...
5163857 Self-propelled boat  
A self-propelled boat (10) to be used by a boater to maneuver himself along the surface of a body of water, especially in shallow water where the use of a motorized boat or a deep bottom boat is...
5149118 All-terrain wheelchair  
An all-terrain wheelchair comprising a frame constructed of tubular air-filled frame members to enable the wheelchair to be amphibious. A pair of rear drive wheels are rotatably mounted on the rear...
5145424 Human-powered boat propelling equipments  
A human-powered boat propelling drive is provided for translating occupant's body weight and variable movements into the power for propelling boat. By coupling the propelling drives, a...
5041031 Swimming frame  
A swimming frame for competition in swimming, swimming instruction, muscle strengthening, and entertainment in the water comprises a pair of floats (1), a clamping unit (2, 3), and a paddle unit...
4960396 Foot-operated boat paddle propulsion system  
A boat-mounted pedal-driven paddle system for maneuvering a lightweight fishing boat. When employed for movement, a paddle is vertically oriented with its blade parallel to the keel of the boat and...
4954106 Aquatic sports device  
An aquatic sports device which includes a buoyant body and a water injection device. The water injection device includes a tank, a piston, and a spring. In operation, the user's weight drives the...
4943051 Human energy transmission device  
A propulsion and exercise device transmitting human energy from both the upper and lower body simultaneously. A frame (20) contains a rotatable upwardly extending mast (30) to which a foot engaging...
4936802 Swinging and propelling ship  
The present invention relates to a propulsion device for a boat. A manually powered ship wherein a wing-like fin whose front edge is round and rear edge is sharp is mounted on a shaft provided in a...
Matches 1 - 50 out of 86 1 2 >