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| Number | Title | Issue Date |
| 8147212 | Wave driven air compressor A vertical wave powered air compressor where different parts of the structure are at different depths (and hence static pressures). A plurality of compression stages are stacked one below the other. Each level has two or more chambers. The chambers have a series of ... | 04/03/2012 |
| 7150149 | Extracting power from a fluid flow An apparatus for extracting power from a fluid flow comprising a fluid driveable engine, a fluid directing arrangement defining a channel in the flow of a primary fluid, the channel with a flow accelerating constriction shaped. The primary fluid accelerates as it pa... | 12/19/2006 |
| 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 |
| 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 |
| 6922993 | Apparatus for deriving energy from waves Apparatus for deriving energy from waves, the apparatus comprising a chamber (1) adapted to float in water but having a water plane area such that its vertical oscillating movement is substantially damped relative to the height of waves in the water in which ... | 08/02/2005 |
| 6402459 | Device comprising an elongated tubular body arranged to be located in water The invention relates to a device (1), including an elongated tubular body (3) arranged to be located in water in an essentially vertical position. The tubular body (3) includes an open end (6) at the bottom and a narrowing portion (7) at the top, which e... | 06/11/2002 |
| 6210122 | Method and delivering an explosive composition An explosive slurry is positioned in the interior of a pressure tank. A liquid is introduced into the interior of the pressure tank and into direct contact with the slurry. The slurry is forced out of the interior of the pressure tank to a position of uti... | 04/03/2001 |
| 5211545 | Arrangement for feeding water into a reservoir Arrangement for feeding water into a reservoir located at a level above that of the ocean by utilising energy produced by the movement of waves thereof. An air cushion-forming portion of a first chamber communicates with an air cushion-forming portion of ... | 05/18/1993 |
| 5191225 | Wave power apparatus A wave power apparatus (10) includes a chamber (16) which may be constructed over a coastal gully (12) so that waves (14) cause the water level to rise and fall in the chamber, and so cause air to flow to and fro in a duct (32). A Wells-type biplane turbi... | 03/02/1993 |
| 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 |
| 4613287 | Wave operated energy device A wave-powered, two-stage compressed air apparatus (10) comprising a low compression valving arrangement, and a high compression chamber (16), wherein volunteer air is used in the low compression mode to pre-charge the high compression chamber (16) and th... | 09/23/1986 |
| 4466244 | Power generation A collection device for energy from water with wave motion has working fluids, a number of pumping units and accumulators interconnected together, and valves to regulate the fluid flow. Each pumping unit has a chamber with an intake port connected to an a... | 08/21/1984 |
| 4464080 | High volume tidal or current flow harnessing system Apparatus permitting the utilization of large volumes of water in the harnessing and extracting of a portion of the power generated by the rise and fall of ocean tides, ocean currents, or flowing rivers includes the provision of a dam, and a specialized s... | 08/07/1984 |
| 4441030 | Energy conversion apparatus A wave energy conversion system is disclosed and comprises a spine and a plurality of wave driven pump units each comprising a pillow shaped flexible bag arranged with its length direction horizontal and mounted on the spine so that the water in which the... | 04/03/1984 |
| 4364715 | Wave actuated gas compression apparatus An apparatus for harvesting wave energy by utilizing the movement of the waves has a support or foundation suitably anchored so as to be relatively stable to wave movement. Pivotally attaching to the support is a pontoon member. The pontoon is so pivoted ... | 12/21/1982 |
| 4316704 | Floating power generation assemblies and methods Floating-on-a-body-of-water compressed-air-generating assemblies and methods are disclosed which are utilized to drive electrical generators powered by compressed air. The integrated assembly utilizes windmills, reciprocating float-linkage means, collapsi... | 02/23/1982 |
| 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 |
| 4231711 | Extract of energy from the sea The invention provides apparatus for extracting energy from waves in the surface of a body of water, comprising a structure adapted to float on the water and having an inlet channel and means for anchoring the structure with the inlet channel facing into ... | 11/04/1980 |
| 4231712 | Sea water lifting device A device for transmitting sea water from a lower level to a higher level by means of sea surge striking the intake pipe to generate air pressure in a sealed chamber and to cause the water therein to be transmitted upwards into the next higher sealed chamb... | 11/04/1980 |
| 4198821 | Devices for extracting energy from wave power The invention provides a device for extracting energy from waves on a liquid, the device having a chamber with an opening for the flow of liquid into and out of the chamber to provide a quantity of the liquid which is arranged to oscillate in the chamber ... | 04/22/1980 |
| 4139984 | Device for deriving power from wave energy A device for extracting energy from wave energy and comprising a plurality of chambers adapted for pressurizing and discharging a working gas, means for collecting the pressurized working gas, and a mechanical device such as an air turbine to which the co... | 02/20/1979 |
| 4123185 | Floating breakwater and energy collecting system A combination floating breakwater and wave energy collecting system in which a pair of joint floating spread wings are provided between which a vessel can be moored. The spread angle of the wings is adjustable and the wings can be jointly swung about thei... | 10/31/1978 |
| 4103490 | Apparatus for harnessing tidal power An apparatus for harnessing and extracting a portion of the power generated by the rise and fall of ocean tides. A tidal chamber is provided wherein the rise of the tide creates positive air pressure within the tidal chamber and the fall of the tide creat... | 08/01/1978 |
| 4098081 | Tidal power plant and method of power generation A plurality of tidal chambers are filled in succession during rising tide and then are allowed to sequentially empty during the half-cycle of falling tide. Power is generated by air flow across a turbine, as a manifold and valve means communicate air pres... | 07/04/1978 |
| 4078871 | Sea wave energy conversion A fixed structure encloses a vertically spaced plurality of superimposed channels that are open at one end of the sea to receive deep sea waves approaching a shoreline. Each of the channels has an entrance ramp that slopes upwardly shorewardly to induce b... | 03/14/1978 |
| 4022549 | Shoreline air compressors wherein swell water pumps the air A rigid waterproof structure built on the ocean floor near a shore is completely enclosed. Guides are provided to direct the waves or swells from the ocean to an inlet opening which is completely covered, by a free-hanging heavy gate which latter is opene... | 05/10/1977 |
| 4013379 | Wave-powered pneumatic system for power generation A wave-powered pneumatic system for producing compressed air to be used for energy storage or power generation, comprising an elongated seawall extending parallel to the shore and at a distance out from the shore, upon which an air-accumulating structure ... | 03/22/1977 |
| 3937168 | Bilge pump A wave-actuated bilge pump for pumping foul bilge gases from a boat. The pump includes a generally inverted U-shaped section of hollow tubing with generally downwardly directed legs having open ends. One of the ends is positioned to receive bilge gases fr... | 02/10/1976 |
