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7527011 |
Propellerless scuba propulsion vehicle powered by compound piston motor joined to opposing water thrusters provides diver air without limiting dive time
Scuba tank compressed air can now power a dual piston compound motor driving dual water thrusters of a steady pulling underwater propulsion vehicle. Motor exhaust provides diver breathing air...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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4371347 |
Wave motor, especially for propulsion of boats
A wave motor for propulsion of a floating device, especially a watercraft, comprises a downwards extending supporting structure connected to the craft. An essentially horizontally disposed,...
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4302194 |
Combined aquatic support and propulsion device
A combined propulsion and support device for use by a swimmer when the device is in a first operating position, but with the device being quickly and easily transformed to a second position in...
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4214547 |
Rider propelled boat
An amusement device comprising a boat, for a rider, which is formed of lightweight material, and permits the rider to stand on the boat much like on a surf board and by rolling the boat about its...
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4102293 |
Device for propelling ships
The invention concerns a device for propelling ships comprising at least one surface which freely oscillates within a casing under the action of at least one shaft. The surface includes a main...
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3879151 |
Toroidal fan
A rotor is provided for use in moving fluids by immersing the rotor in the fluid. The rotor includes first and second end plates having means for coupling the end plates to respective drive and...
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3800734 |
WATER PROPULSION DEVICE
A compression head with an inner valve is adapted for improved water propulsion.
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3765175 |
FLUID DRIVEN PROPULSION AND GENERATOR MECHANISM
A duct is formed through a vessel. An electro-magnet is positioned around the duct at a point such that the poles thereof form opposed portions of the duct. A vane is positioned within the duct to...
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3464380 |
AUXILIARY PROPULSION DEVICE FOR SHIPS
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3377977 |
Combination sculling and surfboard
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3336897 |
Marine propulsion system
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3307358 |
Device for propelling or pumping a fluid and application thereof to the propulsion of ships
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3236203 |
Watercraft propulsion device
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3111110 |
Boat propulsion
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3095850 |
Foot operated boat paddle
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3049089 |
Marine propulsion system and engine
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3038435 |
Mechanism for manual propulsion of small water-craft
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2958306 |
Boat
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