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| Number | Title | Issue Date |
| 7199483 | Tidal power generation A tidal power generator has a floating vessel hull that is subject to rising and falling water levels so that the hull moves vertically up and down. Linear-to-rotary converters are coupled between the vessel hull and a fixed object. The converters allow the hull to ... | 04/03/2007 |
| 7159396 | Fluid-operated power generating system A system and method for actuating a load by means of the conversion of hydraulic energy to reciprocating movement of a piston assembly within a chamber. The piston assembly includes a float, and the fluid within the chamber is alternately withdrawn into fluid convey... | 01/09/2007 |
| 7076949 | System for multiple harnessing and complemented conversion of energy from sea waves System for multiple harnessing and complemented conversion of energy from sea waves. The system includes a structure of vertical guides along which the central floating body moves, a submerged captive-air tank, held up by the floating body, with the body and the tan... | 07/18/2006 |
| 7023104 | Wave energy conversion device for desalination, ETC An impulse-type “wave motor” employs a seabed-mounted or supported structure mounting a wave energy absorbing panel on a hinged lever arm for reciprocation motion to obtain optimal absorption of wave energy from wave motion in the sea. For deepwater wavelengths ... | 04/04/2006 |
| 7003947 | Gyro wave activated power generator and a wave suppressor using the power generator A gyro wave-activated power generator utilizing wave energy which has, as a component, a control moment gyro, and which comprises a floating body (1), a control moment gyro (5) supported by the floating body, and a power generator (10) connected... | 02/28/2006 |
| 5424582 | Cushioned dual-action constant speed wave power generator A wave power generator is substantially continuously driven by a pair of floats connected to a common drive shaft and positioned side by side along a line perpendicular to the direction of wave motion, one float being specifically designed to efficiently ... | 06/13/1995 |
| 5084630 | Wave powered apparatus for generating electric power A wave powered generator incorporating a plurality of paddle and hydraulic cylinder units. Each paddle and hydraulic cylinder unit has a paddle in the path of waves and is pivotally supported to reciprocate and operate a hydraulic pump. Each hydraulic pum... | 01/28/1992 |
| 4765140 | Piezoelectric servomechanism apparatus A floating plate is provided in a cylinder chamber and slides freely like a piston. A first group of laminated, ring-shaped, thin-plate piezoelectric elements is provided between a fixed support member provided on part of a wall portion of this cylinder c... | 08/23/1988 |
| 4691514 | Water engine A water engine comprises two floats arranged to reciprocate vertically in respective water chambers. Water is admitted to each chamber in turn from a head of water and then allowed to exhaust to a lower level, thereby causing the floats to rise and fall. ... | 09/08/1987 |
| 4674281 | Method of power generation and its apparatus utilizing gravitation force and buoyancy An apparatus for the generation of power which comprises a first cylinder and a second cylinder, a first float member and a second float member disposed in the first and second cylinders, respectively, a first inner cylinder and a second inner cylinder di... | 06/23/1987 |
| 4472937 | Water driver power supply system A water driven power system has a cylindrical body with valved water supply and drain ports in the bottom thereof, the valves including valve plates rotatable between valve open and valve closed positions. A float is freely movable up and down between an ... | 09/25/1984 |
| 4371788 | Energy device powered by the motion of water beneath waves A device for extracting both kinetic and potential energy from the motion beneath waves over a considerable depth comprising a power member or sail guided to reciprocate with the movement of the water. The power sail is connected to and operates a power d... | 02/01/1983 |
| 4267695 | Buoyancy energy engine The engine comprises an elongated, vertical casing within which a buoyancy piston is vertically reciprocal between upper and lower positions. The buoyancy piston bottomly carries a bottom piston plate which is a sliding seal within the interior of the cas... | 05/19/1981 |
| 4207741 | Power source using cyclically variable liquid level An hydraulic motor having as an energy source a cyclically controlled rising and falling level of liquid in a working tank in which is provided a piston element having a liquid-tight hollow chamber that is arranged to move vertically with the rising and f... | 06/17/1980 |
| 4108579 | Wave motor A basin for containing water is provided and a heavy buoyant body is guidingly received in the basin for back and forth reciprocal movement therein and also raising and lowering within the basin in response to changes in the elevation of the water level t... | 08/22/1978 |
| 4083186 | Apparatus and method for converting hydrostatic energy to electrical energy Hydrostatic energy is converted to kinetic energy preferably for generating electricity by driving a fluid actuated motor connected to an electrical generator. Pumps are arranged in parallel for driving the motor, and are in turn actuated by engines drive... | 04/11/1978 |
| 4034565 | Method and apparatus for generating power A method and apparatus for generating power includes providing at least one elongated chamber having a float reciprocatively mounted therewithin for axial and reciprocative movement and having at least one opening in the chamber, and disposing vertically ... | 07/12/1977 |
| 3957398 | Wave energized pump This is a floating pumping station, conceived as ordinarily to be used at the shore of the ocean or large lake where wave action is very considerable and where provision must be made for tidal change and in some cases change in the force of the waves sinc... | 05/18/1976 |
