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| Number | Title | Issue Date |
| 7736205 | Human powered watercraft Human powered watercrafts, propulsion systems, and methods of propulsion are provided. A watercraft having an upper deck is configured with a cam plate having a pedal above the deck and a plate and cam below the deck, the cam engaging a cam follower of a fin bar, th... | 06/15/2010 |
| 7300324 | Manual propulsion mechanism A device for propelling a personal watercraft comprising a base having an inner channel and an outer channel. A fin is disposed substantially adjacent to the base and is rotatable relative to the base. The fin has an inner protrusion adapted to moveably engage the i... | 11/27/2007 |
| 7267586 | Lever powered watercraft Embodiments of the disclosure include a flotation device or watercraft propelled through the water using a lever powered propulsion system. The lever powered propulsion system includes human powered actuating levers operably connected to a reciprocating propulsion d... | 09/11/2007 |
| 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 disposed on the body substantially parallel to the longitudinal axis, a ve... | 05/23/2006 |
| 6561862 | Swim fin assembly A swim fin assembly of a generally T-shaped configuration including a flexible fin and an elongated foot support bar traversing and being operatively connected to the fin in a rigid securement. The fin is progressively more flexible from its forward end t... | 05/13/2003 |
| 6558210 | Device for propelling a diver through a body of water using pedaling motion A diver lying prone in the water grasps the invention with his hands and pushes on pedals with his feet. The pedal motion is converted into propulsive force that moves the diver through the water. The diver is free to bend at his hip joints and bend and t... | 05/06/2003 |
| 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 connected to a force input shaft which is arranged within the... | 06/05/2001 |
| 6171157 | Pedal powered boat motor A pedal-powered boat that uses a flexible shaft to drive a propeller. By using a flexible shaft, the user's seat can be placed lower in the vessel, thereby increasing stability. The device also uses a pair of foot pegs and a ratcheted straight driver, whi... | 01/09/2001 |
| 6109988 | Mechanism for rowing a small boat A new and improved leg assisted forward rowing system wherein a user can mechanically advantage the rowing of a boat by first pushing his foot forward along a foot glide member which is slidably engaged within a first track member. This force is transferr... | 08/29/2000 |
| 5669793 | Apparatus and method for propelling a water vehicle There is provided an apparatus for propelling a water vehicle. A plurality of rotatable paddles are mounted on a pair of spaced apart slidable slide mechanism. The slide mechanism are moveable within a pair of channels formed on opposing sides of a frame.... | 09/23/1997 |
| 5647779 | Manifold and water trap system for marine engine A personal watercraft having a compact engine arrangement for driving a propulsion device such as a jet pump positioned to the rear of and on the underside of the watercraft. The engine is disposed so that its cylinder block is at an angle to a vertical p... | 07/15/1997 |
| 5215482 | Apparatus for forward facing boat rowing An apparatus for forward facing rowing of a boat is disclosed. An elongate outrigger support extends outwardly from a mounting point in the boat and has an end adjacent to the mounting point around which the elongate outrigger support pivots horizontally.... | 06/01/1993 |
| 5194023 | Individual propelled water craft A recreational water craft is propelled by an individual using cross country skiing action. The weight of the operator is supported on a platform between two parallel floats thus providing a stable craft. The water craft comprises two longitudinal floats ... | 03/16/1993 |
| 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 impossible or otherwise impractical. The self-propelled boat... | 11/17/1992 |
| 5125677 | Human powered machine and conveyance with reciprocating pedals A machine powered by forces exerted by the machine user on machine driving members, such as pedals, which drive a rotary driven member through a unique variable ratio drive system. The machine may be constructed and arranged for use as either a vehicular ... | 06/30/1992 |
| 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 (4, 5, 6). It might be used by everyone regardless of the ab... | 08/20/1991 |
| 4781630 | Muscular force actuated vehicle On the vehicle are mounted an actuation member, a force transmission unit and a drive element. Preferably, the actuation member is comprised of two levers, each of them being fixed to a metal cable each connected to a chain, the two chains actuating the w... | 11/01/1988 |
| 4472147 | Fin-pole swim apparatus This device is for aiding a swimmer to obtain more thrust when swimming underwater. Primarily, it consists of a pair of poles secured to a harness, which is worn by the user. It also consists of a plurality of pivotal fins secured to the harness, for incr... | 09/18/1984 |
| 4002137 | Buoyant water scooter craft A recreational water scooter craft to travel on the surface of the water comprising a pair of parallel, spaced apart elongated float members, a deck connecting between the floats, a compound scissors linkage connected between an operating lever and a flap... | 01/11/1977 |
