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| Number | Title | Issue Date |
| 7980832 | Wave energy converter A stationary structure is mounted on the floor of an ocean or other body of water subject to wave motion. The structure provides a floatation body that moves with the waves and is able to drive a sealing plate in a compression chamber. When the water level changes, ... | 07/19/2011 |
| 7419366 | Apparatus for storage of potential energy An apparatus for storage of potential energy using water from a deep body of water is described. The apparatus comprises one module including a cylinder, a piston slidably connected to the cylinder, a column for storing the water from the deep body of water received... | 09/02/2008 |
| 7355298 | Syphon wave generator Disclosed is a syphon wave generator for generating electric power from a wave-driven water body in a fast, easy, inexpensive and efficient manner such that the unit has few moving part, is very inexpensive to build and maintain and can withstand storms. The syphon ... | 04/08/2008 |
| 7258532 | Buoyancy pump device A buoyancy pump device for use in fluid. The buoyancy pump device includes a buoyancy block housing defining a buoyancy chamber therein through which the fluid may flow. A buoyancy block is disposed within the buoyancy chamber to move axially therein in a first dire... | 08/21/2007 |
| 7239038 | Apparatus for electrical signal generation based upon movement and associated methods A generator/sensor may include a pair of arcuate swing arms having respective opposing ends pivotally carried by a base so that the arcuate swing arms are transverse to one another and define a movable crossing point therebetween. A body may be carried by the arcuat... | 07/03/2007 |
| 7199481 | Wave energy conversion system A wave energy conversion system converts wave energy within a wave medium into electrical energy. The wave energy conversion system includes a base substantially connected to a wave-medium floor, a tidal platform connected to said base and a tidal float connected to... | 04/03/2007 |
| 6953328 | Buoyancy pump device A buoyancy pump device for use in fluid. The buoyancy pump device includes a buoyancy block housing defining a buoyancy chamber therein through which the fluid may flow. A buoyancy block is disposed within the buoyancy chamber to move axially therein in a first dire... | 10/11/2005 |
| 6933623 | Wave energy converters utilizing pressure differences An elongated cylinder is fully submerged, in vertical orientation, just below the mean water level of, e.g., and ocean, and of a length, dependent upon surface waves of preselected wavelength, such that the top of the cylinder experiences relatively large pressure v... | 08/23/2005 |
| 6363718 | Method for accumulating energy from natural power The natural power of the present invention includes a wind energy, sea wave energy, and solar energy. These energies are used in high energy for achieving an economic value. The current conversion devices, for example, water power generation, wind power g... | 04/02/2002 |
| 6328539 | Hydraulic device powered by wave A hydraulic device powered by a wave includes one or more posts secured on a sea floor, a float buoyant on the wave, a housing secured to the posts and having a slidable piston for separating the interior of the housing into two chambers. Four pipes are c... | 12/11/2001 |
| 6132180 | Automatic pumping apparatus utilizing wave motion An automatic pumping apparatus utilizing wave motion comprises one or more than one sink-and-float members provided so as to move up and down in accordance with a wave motion, positioned below the respective sink-and-float members, connected to the respec... | 10/17/2000 |
| 5909060 | Wave energy transformer An installation for extracting energy from a liquid in which swell occurs relative to a bottom. The installation includes a first and second container for placing at a determined horizontal first mutual distance at least partially under the surface of the... | 06/01/1999 |
| 5842838 | Stable wave motor A wave motion energy harvesting apparatus of the invention comprises a float portion detachably interfitted with and axially moveable with respect to a hydrodynamically resistive portion. The float portion of this apparatus is moored by means of a line at... | 12/01/1998 |
| 5411377 | Mass displacement wave energy conversion system A mass displacement wave energy conversion system comprising a platform mounted on a stable base to protect the system against the interference of wave motion. Beneath the platform are mounted a plurality of pumps operated by a buoyancy vessel and a balla... | 05/02/1995 |
| 5374850 | Apparatus and method for tidal and wave generation of power An apparatus for producing useful energy from the potential energy stored in a deep body of water using tidal and/or wave forces. A hollow base supported above the sea bottom slidably receives a piston therein. A first cylinder is rigidly attached at its ... | 12/20/1994 |
| 5359229 | Apparatus for converting wave motion into electrical energy Apparatus for producing electrical energy from the rise and fall of waves on a body of water. A vertical column is anchored to the floor of the body of water. A buoyant, spherical float is telescopically mounted to the vertical column in a manner that all... | 10/25/1994 |
| 5132550 | Wave powered prime mover The prime-mover comprises a central inertial barge 1, a first outer wave-engaging pontoon 2 pivotally movable relative to the central barge 1 about the pivotal axis defined by the arrow A, and a second outer wave-engaging pontoon 3 pivotally movable relat... | 07/21/1992 |
| 5027000 | Method and apparatus for generating electricity using wave energy A wave power generating system for generating electricity using natural wave power, includes wave energy converters for converting wave energy into air pressure, a constant air pressure tank for storing the air pressure from the wave energy converters to ... | 06/25/1991 |
| 4954052 | Wave powered pump A land and water transportable apparatus positionable in a body of water for extracting energy from wave action in the body of water, is disclosed, comprising a wheel-shaped float positionable on the surface of the body of water operable by wave action, a... | 09/04/1990 |
| 4776772 | Apparatus for converting and storing wave energy An apparatus converts the naturally occurring energy potential found in waves into a pressurized water source. The apparatus, which can be positioned in a breakwater, is comprised of a float to track the crest and trough of waves, a pump, and mechanics to... | 10/11/1988 |
| 4683719 | Man made floating island A man-made floating island includes platform units above the water with vertical members extending downwardly therefrom on which movable floats are mounted which move in response to wave action. Motion of the floats operates air compressors and the result... | 08/04/1987 |
| 4622812 | Apparatus for deriving energy from variation of the level of a body of fluid An apparatus for deriving energy from the rise and fall of a body of fluid consisting of a float adapted to move substantially in a vertical plane in response to the rise and fall of the body of liquid. A cylinder having a piston therewithin adapted for v... | 11/18/1986 |
| 4603551 | Wave power converter A relatively lightweight `motivator buoy` (15), constrained by guides (93) attached to a ballasted "floating platform" (1) of contrasting and static buoyancy characteristics, reciprocates vertically by wave action, lifting water via a piston (20) and cyli... | 08/05/1986 |
| 4586333 | Water engine A water engine comprises a float arranged for reciprocal movement in a chamber under the action of a head of water. The chamber is filled with water from an upper level by means of a valve and is emptied to a lower level by means of a further valve. A cro... | 05/06/1986 |
| 4546264 | Relating cellular energy generating and storage device A rotating cellular energy generating device for generating electrical power for extended periods of time. The generating device characterized by having an annular rotating housing having a plurality of individual compartments therein. The compartments re... | 10/08/1985 |
| 4539485 | Wave activated generator A wave activated generator utilizes the principle of providing relative movement between a permanent magnet and a coil to induce an electrical current in the coil. The coil is situated in a static tube anchored to the sea bed by means of a ballast tank at... | 09/03/1985 |
| 4434375 | Wave energy converter A power generation system for converting the motion of waves on a body of water such as a lake or sea to drive pumps, electrical generators or the like. A weighted float rides on the waves. A cable and pulley arrangement changes the direction, travel and ... | 02/28/1984 |
| 4425510 | Method and apparatus for tidal generation of power A system is disclosed for generating electric power in response to the rise and fall of tidal water. The system comprises a movable container which is mounted on a float to move up with the tide with reference to a coaxially enclosed fixed plunger, which ... | 01/10/1984 |
| 4421991 | Wave powered electrical generator Electrical energy is generated from waves in a body of water employing a support member, buoyant vanes connected to a shaft and rotated by the waves, and a generator coupled to the shaft. Each vane has an elongated slot that the shaft extends through. Coo... | 12/20/1983 |
| 4413956 | Wave pump apparatus A wave pump apparatus includes a number of upstanding cylinders connected together by a subframe. Each cylinder mounts a float on the outside of the cylinder connected to a piston within the cylinder. The upstanding cylinders are spaced approximately a di... | 11/08/1983 |
| 4398095 | Wave activated power generation system A wave activated power generation system of the float type comprising at least one piston-cylinder device having an anchored cylinder and a piston slidable in the cylinder and cooperating with the cylinder to form a pumping chamber above the piston and a ... | 08/09/1983 |
| 4369375 | Power generation from tidal changes A system for generation of power from tidal changes which comprises: (A) two or more chambers positioned in proximity to tidally influenced water, each chamber being of a height greater than the maximum tidal height difference, each chamber being capable ... | 01/18/1983 |
| 4363213 | Combined body and power generating system A system is disclosed for converting a standard buoy design into an electrical power producing apparatus. The vertical arms slide in sleeves attached to the buoy body and terminate in feet in the form of flat discs. As the buoy bobs and pivots in the wate... | 12/14/1982 |
| 4355511 | Wave energy conversion A system and method for converting the energy of sea waves to useful power through the use of a buoyant float. This float is preloaded (i.e. submerged a predetermined distance beneath the level of a wave trough) and retained at that submerged elevation un... | 10/26/1982 |
| 4341074 | Wave-energy converter The invention provides a device for converting wave energy into useful work, and comprises a body adapted to be moved to and fro by waves on a liquid, and means such as a hydraulic piston in a cylinder for converting this movement of the body into a power... | 07/27/1982 |
| 4302161 | Wave pump apparatus A wave pump apparatus includes a number of upstanding cylinders connected together by a subframe. Each cylinder mounts a float on the outside of the cylinder connected to a piston within the cylinder. The upstanding cylinders are spaced approximately a di... | 11/24/1981 |
| 4295800 | Energy convertor The invention relates to a device for converting energy generated by ocean swells or waves so as to drive hydraulic pumps, generators and the like which comprises a support frame and a carriage which is movable in said support frame in an upward or downwa... | 10/20/1981 |
| 4281257 | Wave powered generator A machine that includes a tank in which air is compressed so the air is used to drive an electricity generating mechanism that includes an air grinder or air turbine powering an alternator in an electric circuit, and the air compressor being driven by nat... | 07/28/1981 |
| 4277690 | Plant for utilizing kinetic energy A plant for utilizing kinetic energy inherent in the wave movement of water or heaving of the sea. The plant comprises a float unit and energy absorption apparatus connected to the unit. The absorption apparatus comprises an immersed piston built into an ... | 07/07/1981 |
| 4218192 | Pressure source A pressure source to develop a stream of liquid under pressure as a consequence of the rise and fall of the surface of a body of water. The pressurizing means comprises an enclosure which bounds a chamber having a pair of portions at least one of which is... | 08/19/1980 |
