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| Number | Title | Issue Date |
| 7402028 | Pressurisation system A pressurization device is described mobilizing gravity to mobilize seawater and to employ a weight (56) for gravitionally applying a force to and thereby pressurizing an enclosed pocket (58) of seawater, resulting in low energy utilisation. Energy is ... | 07/22/2008 |
| 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 |
| 7279803 | Ocean current power generator An apparatus and method for generating electricity from the movement of seawater in ocean currents. An impeller is set within a stationary frame. The impeller rotates around a non-moving shaft. There are four sets of electromagnetic coils, two of which are stationar... | 10/09/2007 |
| 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 |
| 7140180 | Wave energy converter (WEC) device and system A wave energy converter system comprises two floats; a first being generally flat and heaving up and down in phase with passing surface waves on a body of water, and the second being elongated and heaving up and down out of phase with the passing waves. Preferably, ... | 11/28/2006 |
| 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 |
| 6956299 | System for generating energy from the waves of the sea Includes at least one floating body (1), and is characterised in that includes a device (2) fitted inside said body (1) for transforming the movement of the floating body (1) into pneumatic or hydraulic energy and means for transmitting t... | 10/18/2005 |
| 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 |
| 6644027 | Apparatus for protecting a wave energy converter Apparatus for converting the motion of sea waves to electrical energy comprises at least one vertically oriented linear generator, relatively reciprocating motion of the armature and stator of which is driven by a float immersed in the sea directly below ... | 11/11/2003 |
| 6389810 | Wave energy converter with float A device to convert vertical motion of waves in a body of water into useable work has hollow float (14) centrally mounted on vertical sleeve (16) sliding on fixed vertical shaft (10). Oscillations are converted into rotation via an opposing pair of pinion... | 05/21/2002 |
| 6226989 | Wave energy converter A wave energy converter comprises an acceleration tube (14) attached to a buoyant body (11). An intermediate section of the acceleration tube defines a working cylinder (16), with openings in the acceleration tube above and below the working cylinder allo... | 05/08/2001 |
| 6109029 | Wave energy converter An apparatus and method as seen in FIG. 2 for converting the motion of waves on a body of fluid 52 into useable energy. This apparatus employs a wave follower 20 to track the rising and falling waves. The reciprocating wave follower interacts with a drive... | 08/29/2000 |
| 5808368 | Ocean wave energy conversion device A float (3) is attached by verticle mooring lines, or cables (8), to a pivoting lever device (2) which is mounted on a submerged anchor (1). The lever device is oriented perpendicular to the shoreline, with one arm of the lever pointing shoreward and the ... | 09/15/1998 |
| 5461862 | System for conversion of sea wave energy A system for the conversion of sea wave energy including a breakwater structure including a wave energy collector integrally formed within the breakwater structure. The energy collector collects and directs oncoming waves to an upwardly extending duct hav... | 10/31/1995 |
| 5405250 | Wave energy extraction device An apparatus and method for converting the motion of waves on a body of fluid into useable energy. The apparatus includes a floating or fixed rotatable support structure, a lever arm(s) pivotally supported from the support structure, and a wave follower f... | 04/11/1995 |
| 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 |
| 5230215 | Ocean current power generation system An ocean current power generation system includes a support placed on or in a state spaced apart from the ocean surface so that it is not rotated by an ocean current, a ring-like rotating member horizontally suported by the support for rotation about an a... | 07/27/1993 |
| 5005357 | Oscillating force turbine A turbine system utilizes the ebb and flow of the natural movements of tidal wave action to generate power. Waves are allowed to enter and exit from a chamber while at the top of the chamber a narrow exit allows for air flow into an out of the chamber is ... | 04/09/1991 |
| 4914915 | Wave powered turbine A turbine device for harvesting wave energy has a hollow vertical tube having an open top and a closed bottom. The vertical tube is located in a body of water with its bottom located beneath the surface of the body of water and its top located above the s... | 04/10/1990 |
| 4803839 | Apparatus for converting ocean motion to useable energy Apparatus is disclosed for converting ocean wave motion to useable electrical energy. A float is mounted to a raft in a manner to permit movement of the float, relative to the raft, in response to ocean wave motion. An upward drive mechanism is responsive... | 02/14/1989 |
| 4782663 | Pneumatic hydro-electric power conversion system The invention provides for the generation of electrical power from low head water, such as the flowing water of rivers or the like, the electrical power is generated by passing the water in sequence over flexible bags or membranes to displace air under th... | 11/08/1988 |
| 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 |
| 4773221 | Apparatus for recovering the kinetic energy of sea waves Apparatus for recovering kinetic energy bound in the movement of water waves. The apparatus comprises a bouyant unit (2) and an energy-absorbing device connected to the bouyant unit. The energy-absorbing device comprises an immersed rigid piston (6) which... | 09/27/1988 |
| 4741157 | Wave-activated power generating apparatus having a backwardly open duct A wave-activated power generating apparatus includes a generally L-shaped duct including a vertically extending portion and a horizontally extending portion and a floatable main body fixedly attached to the duct. The floatable main body is provided such t... | 05/03/1988 |
| 4720976 | Method of power generation and its apparatus utilizing gravitation force and buoyancy The present invention relates to a method and apparatus for power generation 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, and a lever arm p... | 01/26/1988 |
| 4719754 | Wave-activated power generating apparatus A wave-activated power generating apparatus in the form of a buoy includes a floatable main body provided with a vertically extending central pipe having its bottom open end opened into the water and its top open end located above the water surface when t... | 01/19/1988 |
| 4717832 | Tidal and river turbine An improved hydroelectric system provides automatic adjustment for both tidal (reversing) and river (one way) type flow. A plurality of parallel, axial flow auger-type impellors are mounted in a horizontal plane on a floating, inverted-dry-dock type vesse... | 01/05/1988 |
| 4698969 | Wave power converter An apparatus for converting power from the wave motion of a body of water comprises a chamber with an opening for receiving waves. The chamber amplifies the amplitude of the waves. The wall of the chamber preferably has protuberance adjacent the opening f... | 10/13/1987 |
| 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 |
| 4599857 | Method of power generation and its apparatus utilizing gravitation force and buoyancy The present invention relates to an apparatus for the generation of power and its method comprising two cylinders, and pistons disposed in the cylinders, and a lever arm containing weighted balls disposed therein and connected to the pistons, whereby the ... | 07/15/1986 |
| 4594853 | Wave powered generator An apparatus for generating power from the wave motion of the oceans has a resonant chamber operating in the fundamental mode with a float in the chamber. The chamber amplifies the amplitude of the ocean waves.... | 06/17/1986 |
| 4580400 | Method and apparatus for absorbing wave energy and generating electric power by wave force According to the present invention, a simple, strong and economical resonant type apparatus for absorbing wave energy which can generate electric power at high efficiency, yet can withstand extraordinary sea phenomenon such as typhoon with minimum investm... | 04/08/1986 |
| 4462211 | Apparatus for harvesting wave energy A wave energy harvesting apparatus includes a float which rises and falls with wave movements across the surface of a body of water. A hollow tube having a turbine located inside thereof is located vertically downward from the float and is connected to th... | 07/31/1984 |
| 4447740 | Wave responsive generator A wave responsive generator comprises a buoyant float having an outer fixed shaft downwardly depending from the float with an inner rotatable drive shaft movably mounted within the outer shaft. At the lower most portion of the shaft opposite the float is ... | 05/08/1984 |
| 4405866 | Wave-power generator assembly A wave-power generator assembly including a pair of one-way turbines symmetrically mounted on a common rotating shaft is provided. Because of the symmetrical arrangement of the one-way turbines, the rotating shaft and, therefore, bearings to rotatably sup... | 09/20/1983 |
| 4400940 | Resonant type apparatus for absorbing wave energy arranged at wave-breaking facilities A resonant type apparatus for absorbing wave energy arranged at wave-breaking facilities, which comprises, a caisson having a bottom plate, side plates, a backside plate and a top plate at least a part of which is omitted. A water chamber in the caisson h... | 08/30/1983 |
| 4392061 | Apparatus for utilizing the energy of wave swells and waves The invention involves a device for utilizing the energy from sea swells and waves. The device is characterized by the combination of: (a) a vessel adapted to follow the regular undulations of sea swells at a place of anchorage, and constructed in a manner to ... | 07/05/1983 |
| 4385492 | Turbine This invention relates to turbines which are arranged to be driven by an oscillating flow of working fluid especially by movement of air above a naturally moving body of water. Conventional turbines require four valves to direct an oscillating flow of flu... | 05/31/1983 |
