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| Number | Title | Issue Date |
| 8187044 | Watercraft propulsion device including a linkage and a horizontal propulsion fin A watercraft propulsion device 10 has a linkage comprising a vertical drive link (20), a support link (12), an upper control link (50) having a forwardly extended handle bar (52), and a lower propulsion link (30) having a ho... | 05/29/2012 |
| 7833072 | Jet propelled surfboard A jet flow propelled surfboard assembly comprises a longitudinally forwardly elongated structure including a flotation board to support a surfer and two positive displacement pumps which pistons can be manually operated in seesaw-like actions by feet of the surfer t... | 11/16/2010 |
| 7637791 | Fin for oscillating foil propulsion system A human propelled watercraft having a pair of flexible fins extending into the water each adapted to oscillate through an arcurate path in a generally transverse direction with respect to the central longitudinal dimension of said watercraft. Pedals are provided for... | 12/29/2009 |
| 7370596 | Kayak having stabilizing flares A kayak comprises a hull with a relatively narrow cross sectional underwater width for increasing speed and efficiency of the kayak moving through water and first and second pairs of convex surfaces for providing kayak stability. ... | 05/13/2008 |
| 7357684 | Control system for a linear propulsor array The invention comprises a method of using a scalable, configurable “propulsor” system to move and navigate a submersible device through a fluid medium. A propulsor system is an assembly of individual propulsors that act in concert to form a substantially continu... | 04/15/2008 |
| 7350745 | Apparatuses and methods for applying forces to a structure utilizing oscillatory wing motions in a fluid Methods and apparatuses are disclosed that rotate a first member about a first point relative to a chassis, wherein the first member is rotatably coupled to a second member at a second point. A second member is counter-rotated at a ratio of the rotational speed of t... | 04/01/2008 |
| 7300323 | Linear actuator for flapping hydrofoil A linear actuator is provided that converts linear motion to oscillatory motion. The linear actuator includes flats, a hinge, and linear actuators. A hydrofoil is mountable on a spindle attached to the hinge. In operation, a linear push direction by the linear actua... | 11/27/2007 |
| 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 having width-adjusting members, an array of levers and members, paddl... | 09/04/2007 |
| 7244151 | Linear propulsor with linear motion The invention comprises a scalable, configurable “propulsor” system. A propulsor system is an assembly of individual propulsors that act in concert to form a substantially continuous control surface that undulates in a working fluid. Each propulsor is driven and... | 07/17/2007 |
| 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 pivot connection at the center of the hydrofoil span. The pivot conne... | 04/03/2007 |
| 7172475 | Naval propulsion system fed by refuse derived fuel and method thereof Naval propulsion system (1), comprising a heating chamber (6), apt to be fired with refuse derived fuel, an extraction unit (3, 5) apt to extract the fuel in the form of bales housed in containers to feed it towards the heating chamber, and a un... | 02/06/2007 |
| 7101241 | Floatation apparatus and method A floatation method and apparatus for effectively supporting and effectively exercising a person in a liquid. A method and apparatus for effectively playing a game in a liquid. The liquid may be water or any liquid used for cleaning or moisturizing a person's skin, ... | 09/05/2006 |
| 7008276 | Propulsion system A propulsion system which is designed to be used on a payload platform such as a spacecraft, satellite, aircraft or ocean vessel. To operate the system, electrical power is required. However, during operation the system does not require fuel or mass to be expelled i... | 03/07/2006 |
| 6974356 | Amphibious robot devices and related methods Devices for navigating in a fluid medium having a solid boundary include a vehicle body and a fin attached to the vehicle body. The fin is configured to oscillate relative to the body such that interaction between the fin and the fluid medium produces propulsive for... | 12/13/2005 |
| 6877692 | Oscillating foil propulsion system The invention provides a propulsion system based on “thuniform” movement of a foil member to achieve desired directional movement of a vehicle such as an unmanned submarine type of vessel. A pair of foil members are mounted to the vehicle body for reciprocating ... | 04/12/2005 |
| 6561856 | Power floating production and ship propulsion supported by gyroscope and energized by seas To access the inexhaustible energy source like seas and oceans we need to learn how to convert its wave motion to the customized power for our ships, for our existing littoral settlements and our future ocean settlements. Here is an attempt to develop met... | 05/13/2003 |
| 6500033 | Method and device for propulsion of vessels A method for propulsion of water-going vessels (1) comprising a plate (9), which is located in the water (2) and extends across a desired direction of motion for the vessel (1), where the plate (9) is moved from a first position (P1) to a second position ... | 12/31/2002 |
| 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 member is in a first position during downward motion of the s... | 10/22/2002 |
| 6250585 | Impellers with bladelike elements and compliant tuned transmission shafts and vehicles including same A vehicle with improved maneuverability includes: a vehicle body; a first bladelike element; a first tuned compliant transmission shaft attached to the bladelike element; and a reciprocating unit for reciprocally driving the bladelike element within a flu... | 06/26/2001 |
| 6099368 | Rocking ship propulsion and the rocking propelled ship For any directed sea waves the rocking propelled ship can reach high speeds if it utilizes an sea waves energy by means of 1. A rocking propulsor, which is a couple of hydrofoils kept elastic cross by pivots on the extreme points of streamline narrow keel-rock... | 08/08/2000 |
| 6089178 | Submersible vehicle having swinging wings A submersible vehicle is a type having swinging wings. The vehicle is provided with a vehicle main body, a plurality of swinging wings provided for the main body and arranged in series, rotatable shafts located at front edges of the swinging wings, respec... | 07/18/2000 |
| 6022249 | Watercraft A novel water craft, which may include a hull with a keel, having propulsion means extending below the water line. The propulsion means comprises a pair of flappers each adapted to oscillate through an arcuate path in a generally transverse direction with... | 02/08/2000 |
| 5740750 | Method and apparatus for reducing drag on a moving body A method and apparatus for providing reduced drag on a body moving in a direction D through a selected fluid medium at a speed U which is normally sufficient to cause turbulence. Reduced drag is generally accomplished by flexing at least the outer surface... | 04/21/1998 |
| 5584732 | Human-powered watercraft paddle propulsion system A human-powered, foot or hand operated paddle propulsion system for a variety of differently sized and configured watercraft. A rigid supporting subframe attaches the system to an end of the watercraft. A spaced-apart terminus is wedged towards a boat sea... | 12/17/1996 |
| 5401196 | Propulsion mechanism employing flapping foils A propulsion system for use in a fluid, the system utilizing at least one foil which is both oscillated at a frequency f with an amplitude a in a direction substantially transverse to the propulsion direction and flapped or pitched about a pivot point to ... | 03/28/1995 |
| 5366395 | Pulsating impeller A pulsating impeller system is provided for moving a body through a fluid medium. The pulsating impeller includes an enclosure mounted on a vessel or other body. The enclosure is provided with an inlet-outlet aperture to facilitate the flow of the fluid m... | 11/22/1994 |
| 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, and side-panels. The side-panels 20 are foldable, and allo... | 01/26/1993 |
| 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 human-powered boat propelling device is provided which can be propelle... | 09/08/1992 |
| 5021015 | Propulsion mechanism for a boat A propulsion mechanism for a boat includes a boat body; a bar being laterally provided on the boat body; a sliding block being provided on and slidable along the bar; a paddle being pivotally disposed on the sliding block and being submerged in water on w... | 06/04/1991 |
| 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 removably mounted upon the transom by a manually adjustab... | 10/02/1990 |
| 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 direction parallel to the longitudinal axis of a ship so ... | 06/26/1990 |
| 4894032 | Floatation apparatus A floatation apparatus including a buoyant body for supporting a passenger, which is preferably lens-shaped and made of transparent plastic material, and controls for the direction and propulsion of the floatation apparatus when in water including a rotat... | 01/16/1990 |
| 4867718 | Hydrofoil oar A rowing apparatus comprising, in combination: a boat having a hull with fore and aft ends and having an outrigger projecting laterally outwards from each side of the hull and at least two oars located one on each side of the hull, each of the oars compri... | 09/19/1989 |
| 4867719 | Hydrofoil oar with movable outrigger A rowing apparatus comprising, in combination: a boat having a hull with fore and aft ends and an outrigger frame movably mounted onto the hull and having opposite ends projecting laterally outwards from each side of the hull. The apparatus further includ... | 09/19/1989 |
| 4810217 | Propulsion device for small boats A propulsion device for small craft having a shaft, a flexible bag on the shaft at one end, the bag having a larger end which is open and a smaller end with a water flow opening, a cross member extending transversely of the shaft and across the larger bag... | 03/07/1989 |
| 4776821 | Forwards facing hydrofoil oar The present invention improves the efficiency of high performance rowing in shells. The oarsman faces forwards and uses "L" shaped oars with hydrofoil blades. The conventional handle loom section ends at the "L" at the outboard end of the usual outrigger.... | 10/11/1988 |
| 4635577 | Hydroplaning wing sailing craft A hydroplaning wing sailing craft comprising a single buoyant hull having mounted transversely across the hull a hydroplaning wing having forward sweep and inverted gull wing shape. The wing having a positive angle of incidence providing hydroplaning lift... | 01/13/1987 |
| 4578038 | Elongated propelling means for manually moving a sailing craft over the water surface A thrust device for manually advancing a water craft over a water surface includes a stick-like grip forming part of a stick carrying a thrust apparatus made of a flexible, substantially circular foil provided with radial stiffening members attached at eq... | 03/25/1986 |
| 4568290 | Lateral thrust drive for watercraft A lateral thrust drive apparatus for watercraft includes a pair of panel-like blades joined to a respective pair of arms in limited rotational fashion. The arms extend to a pair of parallel drive shafts which extend from a drive housing. Within the housin... | 02/04/1986 |
| 4565530 | Reciprocating marine propulsion engine A reciprocating marine propulsion engine is disclosed which includes a hollow, propulsion cylinder with a cylindrical axis, an intake end for admitting ambient water and an opposed discharge end for discharging water. A reciprocating shaft coaxial with th... | 01/21/1986 |
