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| Number | Title | Issue Date |
| 7891940 | Water wave power system A system for generating energy using water waves includes a unit having two rotors connected by a ramp. The unit is positioned at or near the surface of a body of water and oriented so that the waves break on the ramp and travel along the length of the ramp. Each ro... | 02/22/2011 |
| 7775761 | Systems and methods for tethered wind turbines According to some embodiments, systems and methods for tethered wind turbines may be provided. In some embodiments, a system may comprise an airborne body extending horizontally along an axis between a first point and a second point, wherein the body is at least par... | 08/17/2010 |
| 7465147 | Portable power generating devices Portable power generating devices are provided for converting potential energy from flowing water, water current, blowing air or air current to mechanical and/or electrical energy. The potential energy is converted to a rotational movement, and the rotational energy... | 12/16/2008 |
| 7442002 | Tidal turbine installation An apparatus for generating electric power in freely flowing rivers includes a housing formed of an outside housing (6) and an inside housing (7) having an outlet (10) formed as a suction pipe, with cavities (17) being provided between th... | 10/28/2008 |
| 7352078 | Offshore power generator with current, wave or alternative generators An offshore power generator includes an offshore platform. Current, wind, wave and other renewable energy generators are mounted to the offshore platform. Each current generator has a shroud enclosing a set of blades. A hub member is located within the shroud and ex... | 04/01/2008 |
| 7348686 | Buoyant rotor A buoyancy means and apparatus for reducing friction in rotational devices, particularly electric generators and or turbines. This feature is critical in hydroelectric power plants and ocean energy projects where the rotating weights are significant. Flotation devic... | 03/25/2008 |
| 7317260 | Wind flow estimation and tracking using tower dynamics A turbine control system for a variable speed electrical generator in a wind turbine mounted atop a support tower. The wind turbine converts wind energy into a driving torque applied to the generator. The control system includes a turbine support tower position sens... | 01/08/2008 |
| 7308841 | Speed adjuster devices, systems, and methods Speed adjuster devices, systems, and methods are provided. In an embodiment of the present invention, a speed adjustor device comprises an input shaft, an output shaft, and a housing. The input shaft can receive a first rotational velocity input in a first direction... | 12/18/2007 |
| 7293960 | Power generation assemblies, and apparatus for use therewith A floating power generation assembly comprises at least three floating units (900) floating on a body of water, and at least three anchors (916) secured to a solid surface beneath the body of water, each of the floating units (900) being provide... | 11/13/2007 |
| 7291936 | Submersible electrical power generating plant A self-supporting, submersible generating plant for producing electricity from ocean currents, consisting of two counter-rotating, rear-facing turbines with a plurality of rotor blades extending radially outward from two separate horizontal axis that convey the kine... | 11/06/2007 |
| 7270513 | Apparatus and method for generating power from moving water Apparatus for generating power from a water current in a body of water comprises a longitudinally extending flotation platform for maintaining the apparatus afloat in the body of water and a water turbine operatively carried by the platform for generating power in r... | 09/18/2007 |
| 7258523 | Means to regulate water velocity through a hydro electric turbine A hydro electric turbine having a flexible, collapsible front shroud, the upstream open end of the front shroud being controlled by a draw line passing through purse rings, whereby the upstream end can be closed by drawing on the draw line, thereby stopping water fl... | 08/21/2007 |
| 7235893 | Reduced friction wind turbine apparatus and method The present invention is a wind power apparatus for driving an electric generator. The wind power apparatus comprises a frame, a vertical axle mounted on the frame and a buoyant hull. The buoyant hull is rotational disposed on the axle. The buoyant hull has a curvil... | 06/26/2007 |
| 7228812 | Sea-based hydrogen-oxygen generation system A method for generation of gasses contained in a salt solution in accomplished by disposing automated, floating wave power collection vessels in waters distant from shore, the vessels navigating within one or more predetermined geographic zones, having suitable wave... | 06/12/2007 |
| 7223137 | Floating, water current-driven electrical power generation system A floating, water current-driven electrical power generation system has a hull supporting one or more paddle wheels. The unit is tethered in a stream or river so that the moving water turns the paddle wheel coupled to an electrical generator. A transmission matches ... | 05/29/2007 |
| 7190087 | Hydroelectric turbine and method for producing electricity from tidal flow A hydroelectric turbine for the production of electricity from tidal flow forces, the turbine having a rotor with an open center such that the blades are mounted between an inner rim and outer rim, where retaining members and anti-friction members are provided to pr... | 03/13/2007 |
| 7176584 | Wind power apparatus A wind power apparatus utilizing an anchor which is rotatably fixed to a surface. A chute attaches to the anchor and is provided with a chamber. A restriction is located in the chamber to concentrate the wind within an annular are of the chute and direct it to a pow... | 02/13/2007 |
| 7116005 | Tidal/wave flow electrical power generation system An integrated system for tidal/wave flow electrical power generation. This bi-directional system utilizes the wave flow on the shores and the flow of various rivers and estuaries to generate electrical power through a venturi box which has mounted in it and comprise... | 10/03/2006 |
| 7105942 | Plant, generator and propeller element for generating energy from watercurrents A plant, generator and rotating member for the production of power from currents in a body of water, comprising a fixedly mounted of floating structure, and a plurality of replaceable generator units (750) supported by the structure and which are driven by th... | 09/12/2006 |
| 7081690 | Floating electricity production unit Electricity is produced by harvesting energy from flowing water, which does not harm the environment and which does not consume natural resources. A paddle wheel is stationarily positioned to penetrate the surface of a body of water. Preferably, a plurality of paddl... | 07/25/2006 |
| 7056176 | Buoyancy motor The present invention provides for an apparatus utilising the buoyancy upthrust on a floatation member to assist displacement of a moveable article in a non-vertical direction wherein the apparatus comprises at least one pivotally mounted floatation member disposed ... | 06/06/2006 |
| 7011501 | Energy generating system A system (1) designed to generate energy with the aid of, primarily, sea currents, comprising a rotation body (4) having a front inlet side (2) and a rear outlet side (3), and at least one transfer member (6) connected between the ... | 03/14/2006 |
| 6955049 | Machine and system for power generation through movement of water A machine and system for power generation through movement of water having an array of power generating cells electrically interconnected, where the array is configured in an interchangeable modular fashion and the cells are positioned to receive kinetic energy from... | 10/18/2005 |
| 6956300 | Gimbal-mounted hydroelectric turbine A power plant extracts energy from a free flowing motive fluid by means of a turbine mounted on a gimbal. The shroud element of the fluid intake has external rudders, in conjunction with the gimbal mounting, enabling the enclosed turbine to instantaneously respond t... | 10/18/2005 |
| 6954006 | Hydroelectric system A hydroelectric system for disposal in a continuous flowing water vein includes at least one generator and a housing configured to include a venturi flow restriction for accelerating flow to the generator. ... | 10/11/2005 |
| 6935832 | Portable power generating devices Portable power generating devices are provided for converting potential energy from flowing water, water current, blowing air or air current to mechanical and/or electrical energy. The potential energy is converted to a rotational movement, and the rotational energy... | 08/30/2005 |
| 6935841 | Fan assembly A fan assembly includes a vertical axis wind turbine (VAWT) which is coupled to an air extraction or air supply fan. The VAWT is located above and is coupled coaxially to the fan. The fan assembly also includes an auxiliary turbine to provide start-up torque to init... | 08/30/2005 |
| 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 |
| 6903466 | Wind-power generator pod constituted by the body of an electricity generator The pod of wind-powered generator is constituted by a rigid fairing in which at least one electricity generator for coupling to at least one wind-driven propeller is disposed. The rigid fairing of the pod is formed by the body of the generator in which there are mou... | 06/07/2005 |
| 6817180 | Gravity as a source of renewable energy The invention discloses a portable hydroelectric apparatus which converts the kinetic energy of water caused by gravity into electrical energy. This conversion is accomplished without the presence of a river or stream. A new type of buoyancy motor is disclosed which... | 11/16/2004 |
| 6755607 | Hydro-energy converter A hydro-energy converter comprises a rotary member (9, 57) for converting energy of running water into rotary motion, means (3, 65, 67) for securing the rotary member in a position such that water can run past the rotary member, and baffle means (21... | 06/29/2004 |
| 6747363 | Floating platform harvesting sea wave energy for electric power generation A floating platform harvesting sea wave energy comprising a helix or a turbine arranged at the bottom of a containment tube on a horizontal plane and devices to maintain the platform on the valley of the waves when the tide raises the sea level. ... | 06/08/2004 |
| 6626638 | Ribbon drive power generation for variable flow conditions The ribbon drive generation apparatus is comprised of a ribbon-like curved shape, composed either of metal or other suitable material, attached to a central axle with the complete apparatus being contained in a tube having a constant diameter for the leng... | 09/30/2003 |
| 6616403 | Floating electric generator A device for obtaining electric power from moving water, made up of a floating cylindrical body having a first end extending to a second end along a cylindrical surface having at least two blades. Each end of the floating cylindrical body is fixedly conne... | 09/09/2003 |
| 6551053 | Hydro-electric generator A hydro-electric generator for producing electricity in areas of flowing water. The hydro-electric generator includes a flotation device. An electric generator is mounted on the floatation device. A paddle wheel is rotatably mounted to the floatation devi... | 04/22/2003 |
| 6527504 | Plant for utilizing the energy in waves A plant for utilizing the energy in the waves which are present at a given time in a section of a water area, such as an ocean or a lake. The plant comprises a base located in this section and in the shape of a platform or raft and a wave converter placed... | 03/04/2003 |
| 6476513 | Electrical generator system An electrical wind generator system using multiple brushes for converting the kinetic energy of the wind into electrical energy. The electrical generator system includes a support frame assembly designed for coupling to a vertical support, a generating as... | 11/05/2002 |
| 6406251 | Bi-directional hydroturbine assembly for tidal deployment A bi-directional hydroturbine assembly for tidal deployment. A hydroturbine is carried by a cylindrical shroud. Rotation of the hydroturbine blades by tidal currents drives rotation of the shaft, thereby converting kinetic energy into electrical energy. S... | 06/18/2002 |
| 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 |
| 6379109 | Method and apparatus for detecting and removing obstructions in mechanical aerators Because mechanical aerators are located in a pond of liquid and, therefore, not subject to convenient visual monitoring by operations personnel, it is desirable to have a method for automatically detecting and dislodging debris which become caught on the ... | 04/30/2002 |
