Float Supported Or Buoyant Runner Patents (Class 415/7)
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Patent number: 7465147Abstract: 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 is communicated to power conversion units for conversion, wherein the rotational movement is converted to mechanical, electrical or some other useable or useful energy.Type: GrantFiled: June 13, 2005Date of Patent: December 16, 2008Assignee: Natural Forces, LLCInventors: Michael D. Platt, Eric E. Platt
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Patent number: 7462949Abstract: 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. A plurality of paddle wheels may be deployed on a single floating platform to optimize the transfer of the energy contained in the flow of water passing the floating platform. Each paddle wheel is geared to rapidly rotate a generator axle of an electricity generator of the type conventionally deployed for wind turbines on “wind farms”. Each paddle wheel powers a plurality of electricity generators. Structure is provided to compensate for variations in flow rates in the body of water to intensify a flow of the water and to vary a depth of penetration of the paddle wheel into the water.Type: GrantFiled: July 20, 2006Date of Patent: December 9, 2008Inventor: John Herbert Coman
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Publication number: 20080290665Abstract: An aircraft adapted to house a wind funnel and a wind turbine configured to convert the airflow through the wind funnel into electricity. An electrical cable between the aircraft and a ground station transfers the generated electricity from the aircraft to the receiving ground station for distribution. A plurality of aircraft according to certain embodiments may form a system for generating electricity from airflow.Type: ApplicationFiled: May 21, 2008Publication date: November 27, 2008Inventor: Lynn Potter
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Patent number: 7442002Abstract: 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 the outside housing (6) and the inside housing (7) in order to stabilize the apparatus close beneath the water surface, and with at least one turbine (12) arranged in the inside housing (7) which is flowed through axially and is connected with a generator (14), and with a traction means (2) for anchoring the apparatus. A robust apparatus which is especially protected against hazards caused by high water can be achieved in such a way that the traction means (2) is provided by at least one longer anchor cable (2a), with the anchor cable (2a) being anchored in the used position in an inclined manner in front of the apparatus in the ground of the river, and of at least one shorter rise-limiting cable (2b).Type: GrantFiled: August 16, 2006Date of Patent: October 28, 2008Assignee: Aqua Libre Energieentwicklungs GmbHInventor: Fritz Mondl
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Publication number: 20080211233Abstract: The object of description is an energy generating device for harnessing submarine currents composed of an asymmetric nozzle capable of directing the water flow towards one or more turbines placed (5) before the said nozzle's outlet (4). The nozzle's inlet is asymmetric in shape; one surface of the aforementioned inlet extends beyond its opposite surface, thus acting as a lifting surface producing a force with a component perpendicular to the current flow. The device is moored with a tether-line system (7) which enables the said device to remain in equilibrium, by counteracting the vertical component of the tether's tension, with the vertical lift due to the water flowing through the asymmetric nozzle.Type: ApplicationFiled: May 4, 2006Publication date: September 4, 2008Inventor: Francis Allen Farrelly
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Publication number: 20080203733Abstract: A device for harnessing tidal energy, comprising: a vertically elongate chamber at least partially located in a tidal body of liquid; a separating member movable within the chamber either vertically or along, and configured to seal from each other an upper interior region of the chamber above the member and a lower region of the chamber below the member, the chamber having a first opening whereby the lower interior region may communicate with the body of liquid and a second opening whereby the upper interior region may communicate with the air, the same or another body of liquid; energy harnessing means for harnessing (potential) energy from the change in pressure due to change in height caused by change in tide level. Energy recuperation from flow of fluid through the first or second or multiple openings; and restraining means for releasably restraining the motion of the separating member in the chamber.Type: ApplicationFiled: December 22, 2005Publication date: August 28, 2008Inventor: Anthony Martindale
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Publication number: 20080116692Abstract: Arrangements for converting kinetic energy of ocean currents into electric energy, comprising a floating body carrying a plurality of so called Savonius turbines (26), each of which having at least two blades (34) with a substantially semi-circular cross-section for transferring a rotary motion of the turbine to an electric power generating unit (40). The floating body comprises elongated, mutually spaced and interconnected pontoons (12) and defining between the pontoons a narrowed through-passage (18) for water currents. At least one pair of Savonius turbines being suspended vertically across the through-passage (18) so as to extend downwardly from an upper deck (14) into the through-passage. Alternatively, the Savonius turbines are rotatably mounted at opposite ends in the pontoons so as to extend horizontally above each other across the through-passage. The adjacent turbines are configured to rotate in opposite directions.Type: ApplicationFiled: December 28, 2004Publication date: May 22, 2008Inventors: Goran Emil Lagstrom, Sven-Erik Ekbach
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Publication number: 20080110168Abstract: Systems and processes for harnessing the dynamic energy of a fluid body may be used to generate electric power. In particular implementations, a system and process for harnessing the dynamic energy of a fluid body include the ability to follow a movement of a fluid body and pressurize a volume of fluid due to following the movement. The pressurized volume of fluid may be used, at least in part, to drive an electrical generator.Type: ApplicationFiled: October 30, 2007Publication date: May 15, 2008Inventor: Fernando Gracia Lopez
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Patent number: 7293960Abstract: 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 provided with a power generator, the floating units (900) being arranged substantially at the vertices of at least one equilateral triangle. Ship borne apparatus for deploying the floating units of such a power generation assembly and a novel multiple wind turbine assembly are also described.Type: GrantFiled: October 20, 2004Date of Patent: November 13, 2007Inventors: Shigeyuki Yamamoto, Warren E. Colburn, Jr.
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Patent number: 7270513Abstract: 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 response to water current in the body of water. The platform is configured to enhance the flow of water current over the turbine blades and, as well, to enable a number of like platforms each with an associated turbine or turbines to be arrayed in a cooperative manner. The water turbine may comprise a turbine rotor with a plurality of relatively narrow, flexible elongated blades arranged in circumferentially spaced rows extending along the rotor. In each row, the blades are distanced from each other in succession by a space.Type: GrantFiled: July 8, 2003Date of Patent: September 18, 2007Inventors: Colin Regan, Johann Hoffmann
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Patent number: 7258523Abstract: 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 flow through the turbine. Decreased drag allows the turbine to rise to the surface. Opening the upstream end so that water flows into the turbine increases drag to lower the turbine into the water and causes rotation of the turbine blades.Type: GrantFiled: May 25, 2004Date of Patent: August 21, 2007Assignee: OpenHydro Group LimitedInventor: Herbert L. Williams
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Patent number: 7105942Abstract: 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 the water currents. The structure comprises arms (615, 720, 730). The rotating member (400) comprises a plurality of member sections (410) rotatably mounted on a shaft (405) between an end piece (407) and a tip (406). The generator comprises a contra-rotating rotor (550) and stator (800) connected to respective shafts (500, 820) and bearings, where the stator frame (800) is axially supported (810) on the first shaft (500) and the first shaft (500) at one end thereof is axially supported (810) on the stator frame. The generator according to the invention can be used for the production of electric power, and as an electromotor for the production of mechanical rotational energy.Type: GrantFiled: July 8, 2002Date of Patent: September 12, 2006Assignee: Hydra Tidal Energy Technology ASInventor: Svein Dag Henriksen
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Patent number: 7011501Abstract: 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 inlet side (2) and a generator (5). The rotation body has a conical and/or bulb shaped, tapering section (8, 9) extending from a substantially cylindrical waist section (7) in direction towards the inlet side, and a conical and/or concave or flat portion extending in the opposite direction from the outlet side, said waist section being along its circumference provided with close to each other mounted blades (10) for the purpose of maintaining a rotation of the rotation body, the free, front end of which is at the same time secured to the transfer member (6) in order to transfer a rotational movement to the generator (5).Type: GrantFiled: January 17, 2002Date of Patent: March 14, 2006Assignee: Water Crossing, Inc.Inventor: Björn Lindberg
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Patent number: 6955049Abstract: 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 the movement of water to generate electricity through the movement of an electrical turbine within each cell. The individual turbines and cells may generate relatively small amounts of electricity and use polymer magnetics in the impellers and windings in the turbine to withstand ocean environments and are stacked on electrically conductive trays for ease of installation and replacement.Type: GrantFiled: May 21, 2004Date of Patent: October 18, 2005Inventor: Wayne F. Krouse
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Patent number: 6954006Abstract: 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.Type: GrantFiled: November 10, 2003Date of Patent: October 11, 2005Inventor: Fred E. Williams, Jr.
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Patent number: 6817180Abstract: 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 is formed as a U-tube erected vertically. One leg and the curved portion at the bottom are filled with a series of separate air-filled tanks. The other leg is filled with water, with a suitable seal at the bottom of the leg through which are made to jut 1½ tanks so the seal prevents water from leaking downward into the air space of the curved portion of the U-tube. Suitable means prevent the water column in the one leg from pushing the series of tanks out of the U-tube. The leading as well as the succeeding tanks behind it are made buoyant in sequence. In rising through the water-filled leg of the U-tube water is pushed through a nozzle which is made to operate hydroelectric devices.Type: GrantFiled: March 6, 2003Date of Patent: November 16, 2004Inventor: Edwin Newman
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Patent number: 6755607Abstract: 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, 63) for creating a head of water upstream of the rotary member.Type: GrantFiled: April 24, 2002Date of Patent: June 29, 2004Inventors: Robert George Hester, Ronald William James Hester
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Patent number: 6747363Abstract: 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.Type: GrantFiled: June 10, 2002Date of Patent: June 8, 2004Inventor: Gines Sanchez Gomez
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Patent number: 6626638Abstract: 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 length of the tube. A front portion of the tube has a pivot or tether and the rear portion of the tube has a drag means, such as fins, so as to cause rotation of the tube until it is oriented parallel to the flow. In another embodiment of the present invention, the electrical output of the ribbon drive generation apparatus is connected to a storage battery so as to store energy in times of high flow and make up for generating deficiencies during times of lesser flow. In yet another embodiment of the present invention, plural generating stages are serially arranged to adapt to flow variation and provide smooth start-up. Bypass vents and coupling means are located between each stage.Type: GrantFiled: January 25, 2002Date of Patent: September 30, 2003Inventor: Jonathan B. Rosefsky
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Patent number: 6616403Abstract: 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 connected to a waterwheel sprocket, and rotatably connected to an arm pivotally connected to an anchor. The waterwheel sprockets are connected to a generator sprocket by a drive means. When the new device is placed and held in a body of moving water, the moving water impacts against the blades and causes the floating cylindrical body to rotate. The rotation of the floating cylindrical body causes the first and second waterwheel sprockets to rotate and move the drive means which are connected to a generator and in turn create electricity.Type: GrantFiled: April 8, 2002Date of Patent: September 9, 2003Inventors: Matt H. Smith, Spencer A. Smith
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Patent number: 6551053Abstract: 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 device. The paddle wheel is mechanically coupled to the electric generator. The floatation device is anchored in an area of flowing water such that a current rotates the paddle wheel and electricity is produced.Type: GrantFiled: September 14, 2001Date of Patent: April 22, 2003Inventor: C. Ed Schuetz
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Patent number: 6527504Abstract: 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 on the base and serving for transforming the wave motion of the water into whirling motion. The plant furthermore comprises a number of adjacent wave catches each having at least one catch plate for catching at least part of the water of the waves and making this water flow down along the catch plate from a top front edge to a bottom rear edge on the plate, and a whirl pipe for each wave catch for, via a slot extending along the rear edge of the at least one catch plate, taking up the water flowing along the catch plate so that this water will describe a whirling motion in the whirl pipe. The plant can utilize the average energy in the waves better and with less construction costs than known so far.Type: GrantFiled: December 14, 2000Date of Patent: March 4, 2003Assignee: Waveplane International A/SInventor: Erik Skaarup
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Publication number: 20030014969Abstract: A barge with a water turbine is anchored in a river. The turbine is immersed in the water between two separated hulls. Water is directed to flow in a concentrated state between the hulls, turning the turbine and generating electricity.Type: ApplicationFiled: July 23, 2001Publication date: January 23, 2003Inventor: Victor Walters
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Publication number: 20020192068Abstract: A series of horizontal axis type rotors is distributed along the upper section of an elongate torque transmitting tower/driveshaft. The tower/driveshaft projects upward at its base, supported by a cantilevered bearing means, so it is free to rotate about its own axis. The tower/driveshaft is bent downwind, until the coaxially attached horizontal axis rotors become sufficiently aligned with the wind to rotate the entire tower/driveshaft. Power is drawn from the rotating shaft at the base. Surface mount, subsurface mount, and marine installations are disclosed, including a sailboat that can sail upwind, and store energy while moored. Vertical axis rotor blades may be attached to the lower, substantially vertical section of the tower/driveshaft and even to the distal section of the tower/driveshaft, should it hang in a sufficiently vertical direction for such blades to contribute toward rotation.Type: ApplicationFiled: June 14, 2001Publication date: December 19, 2002Inventor: Douglas Spriggs Selsam
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Patent number: 6476513Abstract: 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 assembly coupled to the support frame assembly and designed for converting rotational motion into electrical energy, a pair of blade assemblies designed for converting kinetic energy of wind into rotational energy, each one of the blade assemblies being coupled to the generating assembly.Type: GrantFiled: September 28, 2000Date of Patent: November 5, 2002Inventor: Lubomir B. Gueorguiev
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Patent number: 6406251Abstract: 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. Stabilizer fins extend radially outwardly from the shroud along substantially the entire length of the shroud. Each comer of each stabilizer fin carries a pivot point for connection of pivoting deflectors between adjacent pivot points of adjacent stabilizer fins at the same end of the shroud. Pivoting deflectors are positioned between pivot points about the periphery of each end of the shroud and are biased such that tidal current flow in a first direction urges pivoting deflectors at the first end of the shroud into a non-deflective position, while urging pivoting deflectors at the second end of the shroud into a deflective position, and vice versa for tidal current flow in the opposite direction.Type: GrantFiled: October 24, 2000Date of Patent: June 18, 2002Inventor: Philippe Vauthier
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Patent number: 6402459Abstract: 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 ends in an opening (8) arranged to be located above the level of the surrounding water (2). The device (1) is arranged to establish a water level in the narrowing portion (7) of the tubular body (3), which is lower than the level of the surrounding water and to intermittently level out this level difference in such a way that the water in the tubular body (3) is transported up to a higher level than the level of the surrounding water by the action thereon of the narrowing portion (7).Type: GrantFiled: September 13, 2000Date of Patent: June 11, 2002Inventors: Mikael Pauli, Dag Birkeland
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Patent number: 6379109Abstract: 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 aerator propeller. The present invention includes a waterproof vibration sensor mounted within sensing range of the rotating shaft of the aerator propeller. The sensor is operably connected to the propeller motor so that when the sensor detects excessive rotating shaft vibrations caused by debris attached to the propeller, the motor is automatically shut down and then run in the reverse direction causing the debris to be thrown off the propeller. Once the debris have been dislocated from the propeller, the motor is restarted in the forward direction. If the sensor continues to detect excessive motor shaft vibration, the motor will once again be shut down and then run in the reverse direction.Type: GrantFiled: May 12, 2000Date of Patent: April 30, 2002Inventors: Roy F. Senior, Jr., Clifford Jon Taylor
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Publication number: 20020047275Abstract: The invention concerns a wind power installation comprising a rotor having at least one rotor blade for converting the kinetic energy of the wind into mechanical energy, an adjusting device for individually adjusting at least one rotor blade, a generator for converting the mechanical energy of the rotor into electrical energy, and an operative connection between the rotor and the generator for transmitting the mechanical energy of the rotor to the generator. The object of the invention is therefore that of avoiding the above-indicated problems and providing a wind power installation in which the loadings which can occur due to local, temporary peaks in the wind speed in portions of the rotor area are reduced.Type: ApplicationFiled: January 25, 2000Publication date: April 25, 2002Inventor: ALOYS WOBBEN
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Patent number: 6355988Abstract: A water lift generator system for generating electricity by a water system propelled by the force of water cycling through the system. A multi-chamber water lift system includes an down cycle converting the potential energy of water traveling downward through a down tube and out a nozzle or spout turned tangential to the main chamber to cause the chamber to rotate. The rotation of the system runs an up—cycle having several tee shaped tubes which operate to lift water from one chamber to the next higher chamber. The topmost chamber has an additional tee tube connecting the inner chamber with the down tube to complete the cycle. A water supply may be provided at the base of the machine to provide a closed cycle.Type: GrantFiled: November 8, 2000Date of Patent: March 12, 2002Inventor: Eugene R. Maple
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Patent number: 6294844Abstract: The invention relates to an installation comprising windmills (1) which are mounted in a frame (5, 6, 7) said frame is provided with float bodies (15), and it is capable of rotation about a vertical axis in order to turn the windmills towards the wind. In order to keep the windmills upright, supporting means, for example a body (16) which is anchored to the bottom, are disposed some distance away from the plane of the windmills. Furthermore, means are provided for improving or simplifying maintenance.Type: GrantFiled: January 6, 2000Date of Patent: September 25, 2001Assignee: Lagerwey Windturbine B.V.Inventor: Hendrik Lambertus Lagerwey
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Patent number: 6246125Abstract: A portable generating system for converting either water or wind energy into electricity comprises a paddle wheel assembly having a housing and a plurality of impellers rotatably mounted therein. The housing defines inlet and outlet openings for receiving a fluid stream, whether water or air, therebetween so as to rotate the impellers. The impellers are axially connected to a generator for producing electricity upon impeller rotation as the fluid stream flows between the housing openings. The generator may be mounted within the paddle wheel housing adjacent the impellers or at a distance therefrom and coupled thereto with a shaft. A plurality of mounting brackets are fixedly attached to the outer surface of the housing. The generating system further includes a plurality of height-adjustable support legs that may be coupled to the mounting brackets so that the paddle wheel housing may be positioned at a predetermined height above a support surface.Type: GrantFiled: July 25, 2000Date of Patent: June 12, 2001Inventor: Robert C. Axtell
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Patent number: 6227803Abstract: An apparatus for generating electric power using wind force which is capable of generating good quality electric power by combining the apparatus with the inventor's water wave force-based electric power generating apparatus and installing this combined apparatus in the sea.Type: GrantFiled: May 10, 1999Date of Patent: May 8, 2001Inventor: Hyun Jin Shim
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Patent number: 6217284Abstract: An oscillating fluid flow motor and a fluid flow power system that converts the energy in the flowing fluid to mechanical energy through a vane that automatically sweeps back and forth across the flow. In one embodiment of the oscillating fluid flow motor, the motor includes (1) a support structure, (2) an elongated swing arm pivotably and rotatably mounted to the support structure, (3) a vane having a concave face, (4) an elastic link operatively coupled in tension between the swing arm and a support, and (5) a direction control mechanism operatively coupled to the swing arm. The vane is connected to the swing arm so that, upon rotation of the swing arm about its longitudinal axis, the orientation of the concave face of the vane changes relative to the flow of a fluid confronting the face. The direction control mechanism is operative to selectively re-orient the face of the vane at each of two points that define the ends of the bidirectional stroke of the swing arm.Type: GrantFiled: November 22, 1999Date of Patent: April 17, 2001Inventor: Brant E. Lawrence
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Patent number: 6168373Abstract: An environmentally non-intrusive multiple turbine unit for adjustable deployment in water. The turbines are captured in a shroud having an integrally formed augmentor ring and ballasting member to improve efficiency. The multiple turbine arrangement effectively counteracts the rotational counter-torque of individual turbines, thereby enabling stable deployment of the unit without requiring rigid stabilizing structures.Type: GrantFiled: April 7, 1999Date of Patent: January 2, 2001Inventor: Philippe Vauthier
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Patent number: 6139255Abstract: A bidirectional 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. Stabilizer fins extend radially outwardly from the shroud along substantially the entire length of the shroud. Each corner of each stabilizer fin carries a pivot point for connection of pivoting deflectors between adjacent pivot points of adjacent stabilizer fins at the same end of the shroud. Pivoting deflectors are positioned between pivot points about the periphery of each end of the shroud and are biased such that tidal current flow in a first direction urges pivoting deflectors at the first end of the shroud into a non-deflective position, while urging pivoting deflectors at the second end of the shroud into a deflective position, and vice versa for tidal current flow in the opposite direction.Type: GrantFiled: May 26, 1999Date of Patent: October 31, 2000Inventor: Philippe Vauthier
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Patent number: 6109863Abstract: A fully submersible apparatus for generating electricity from liquid flow as in an ocean or river current. A buoyant structure is fully submersible and has at least one pair of counter-rotating side-by-side motors with a plurality of angularly spaced radial vanes each having a plurality of rotatable subvanes such that current impinging upon the motor will impinge on a closed or solid vane to effect rotation of the motor and its shaft during a first phase of the rotational cycle and will impinge on open vanes for free passage therethrough on the return or second phase of rotation of the motor. Motors may also be provided with vanes in overlying and underlying relationship. An associated method is provided.Type: GrantFiled: November 16, 1998Date of Patent: August 29, 2000Inventor: Larry D. Milliken
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Patent number: 6091161Abstract: A method is described of controlling a tethered, underwater, water current-driven turbine, power-generating device. A predetermined maximum depth and a predetermined minimum depth are set. In response to sensing depth of the device, an ascend protocol or a descend protocol are selectively invoked. These protocols maintain an operating depth of the device that is midway between the predetermined maximum depth and the predetermined minimum depth. The turbine includes variable-pitch rotor blades. A maximum allowable drag force load on the turbine rotors is selected. The pitch of the variable-pitch rotor blades on the turbine is adjusted such that the drag force loading of the device does not exceed a maximum design level.Type: GrantFiled: January 12, 1999Date of Patent: July 18, 2000Assignee: Dehlsen Associates, L.L.C.Inventors: James G. P. Dehlsen, James B. Dehlsen, Geoffrey F. Deane
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Patent number: 5946909Abstract: A series of floating turbine rotors each have a tubular hub with outwardly projecting blades, and the rotors are connected in general axial alignment by a flexible driven shaft. The shaft includes tubular floating connector shafts and flexible couplings, and each rotor is connected to drive the shaft through a one-way ratchet clutch. One or more lines of the connected floating rotors are anchored within moving water of a river or in the waves flowing into a seashore, and the rotors drive each flexible shaft which, in turn, drives an electric generator through a fly-wheel and a power converter or drives an air compressor for producing compressed air which is stored in underground tanks and later used to drive an electric generator through an air turbine.Type: GrantFiled: May 15, 1998Date of Patent: September 7, 1999Assignee: Swort International, Inc.Inventor: Roman Szpur
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Patent number: 5664418Abstract: A vertical axis wind turbine is supported by a frame held in place by an encircling series of crescent-shaped tubular deflector vanes. The vanes widen towards the turbine core, concentrating the wind. The wind is trapped momentarily on entering the turbine cavities. Air can be supplied to such cavities from a compressed air source driven by wave action on a body of water.Type: GrantFiled: April 1, 1996Date of Patent: September 9, 1997Inventor: Victor Walters
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Patent number: 5592816Abstract: A hydroelectric turbine and a method of using the turbine in an open body of water to produce electric power is described. A turbine has a large opening to allow a stream of water to pass through. The turbine is supported by a plurality of rubber tires such that a reaction force from the stream of water holds against the tires. A frame with a floatation chamber is used to lower the turbine into position in the stream of water, and to raise the turbine to a horizontal position on the surface of the body of water. The floatation chamber is partially filled with water to lower the turbine in the body of water such that an air pocket exists in the chamber to orient the turbine in a vertical position. When the chamber is purged of water, the turbine is raised to the surface. Rotation of the turbine drives the tires, which drive pumps to pump fluid to a motor, which drives an electric generator to produce power.Type: GrantFiled: February 3, 1995Date of Patent: January 14, 1997Inventor: Herbert L. Williams
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Patent number: 5471098Abstract: A device is located in a body of flowing water and includes a bridge supporting an electrical generator and anchors for holding the bridge stationary with respect to water flowing past that bridge. The device includes a water wheel submerged in the water beneath the bridge and which includes a plurality of arms radiating outwardly from a central arm. A hydrowing is movably attached to each radial arm and includes two flow impact sections of different surface areas. The hydrowings move with respect to the radial arms to maintain a flow area facing upstream on one side of the central arm that is larger than the flow area facing upstream on the diametrically opposite side of the central arm. This unbalanced flow area creates a force on the central arm tending to rotate that central arm. The central arm is connected to a rotor.Type: GrantFiled: September 26, 1994Date of Patent: November 28, 1995Inventor: Bill Asay
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Patent number: 5451137Abstract: A reaction turbine capable of providing high speed unidirectional rotation under a reversible ultra low head pressure and/or high velocity fluid flow is disclosed. The turbine comprises a working wheel with a plurality of airfoil-shaped blades mounted transversely to the direction of fluid flow for rotation in a plane parallel to the fluid flow. The blades are arranged in a helical configuration, a modification of a delta turbine, which ensures that a portion of the blades are always positioned perpendicular to the fluid pressure, thereby creating maximum thrust to spin the turbine and ensuring a continuous speed of rotation with no accelerations and decelerations. The skewed leading edges further reduce resistance to the turbine rotation. A channel having a rectangular cross-section may be provided to direct the fluid flow to the blades.Type: GrantFiled: April 22, 1994Date of Patent: September 19, 1995Assignee: Northeastern UniversityInventor: Alexander M. Gorlov
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Patent number: 5443361Abstract: A plant for recovering energy from waves in motion comprises a wedge-shaped unit, anchored, and self-adjusting towards the waves. The floating reception unit (1) is placed in the water and has a ramp (3) for the waves and a guide device (4) guiding the water to a reception pipe (8) and into an energy converting engine (9). The guide device comprises a number of reception funnels (4), the cross sections of which are narrowed down in the direction towards the energy converting engine (9). The plant also comprises a number of air chambers (16) and side chambers (10) in which the reception pipes (8) end.Type: GrantFiled: April 28, 1994Date of Patent: August 22, 1995Inventor: Erik Skaarup
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Patent number: 5440176Abstract: An hydroelectric power plant is disclosed which comprises several combination turbine/generators which are suspended into an ocean current from a submerged tension leg type platform. Each of the turbine/generators are independently positionable horizontally, vertically and azimuthally to take the best advantage of the ocean current at any given time for generating electricity.Type: GrantFiled: October 18, 1994Date of Patent: August 8, 1995Inventor: Michael L. Haining
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Patent number: 5324988Abstract: A system for generating electric power using undersea waves against a bag structure, mounted movably on a tower. The bag structure is made of large nylon bag, filled with compressed sea water and extending for 50 meters or more down, surrounding the support tower. Arranged around a central hole in the bag structure are located numerous generator pods which contain generator/rectifier/chopper sets. These generator pods have gears which mesh with racks mounted vertically around the tower periphery, and also with racks mounted horizontally around the bag structure central hole circumference. Movement of the undersea waves causes the bag to rotate and move vertically up and down the tower, turning the generator pod gears which turn AC alternators, producing electric power. A system as described in the invention, standing in 300 meters depth or more could produce over 50 megawatts electric power, cleanly and at an economic cost per kilowatt-hour.Type: GrantFiled: July 23, 1993Date of Patent: June 28, 1994Inventor: Edwin Newman
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Patent number: 5297925Abstract: This new invention, the water column floating pump, is a fluid pump which uses a rotationally symmetric container to pump fluid from an inlet reservoir to the outlet end of the rotationally symmetric container. The rotationally symmetric container is adapted to float with its axis of rotation vertical in a pump flotation chamber. The rotationally symmetric container floats and rotates in the fluid being pumped and uses the buoyancy of the fluid to carry its weight. A plurality of helically spiralling conduits proximate the periphery of the symmetric container forms a system of vacuum suction tubes designed to suck water from the inlet reservoir, proximate the bottom of the fluid pump, to the outlet end proximate the top of the container. The rotationally symmetric container operates at low rotational speed and requires a small horsepower motor to overcome water friction and water pressure.Type: GrantFiled: December 20, 1991Date of Patent: March 29, 1994Inventors: Sek-Wah Lee, John C. Lee
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Patent number: 5281856Abstract: A water current energy converter designed for and capable of converting the flow energy of a moving body of water into electric power comprises at least one water driven flow machine, especially a water driven turbine, an electric power generator (19) and a hydraulic energy transfer system arranged between the water turbine(s) and the power generator (19). According to the invention in at least one thoroughfare flow duct (8) of a floating buoyant body (2) at least one pumping unit (10) comprising a hydraulic rotary pump (11, 12) coupled to a shaft of the water driven turbine is provided. The buoyant body (2) is held by anchoring means in a predetermined orientation and in substantially stationary position on the surface of the water. The hydraulic rotary pumps (11, 12) form component parts and serve as hydraulic pressure sources in the hydraulic energy transfer system.Type: GrantFiled: May 11, 1992Date of Patent: January 25, 1994Inventor: Tibor Kenderi
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Patent number: 5186610Abstract: A drilling mud water recovery apparatus for water collecting on drilling mud precipitated out of the mixture includes a buoyant pump assembly free floating on a layer of water above drilling mud. The pump assembly is connected with a source of electrical energy through electrical controls for a predetermined timed operation of the pump and protecting the pump motor against high and low voltages above or below a predetermined value and a current interrupting function in the event of an electrical short.Type: GrantFiled: January 31, 1991Date of Patent: February 16, 1993Inventors: M. Steve Pennington, Veronica J. Fowler-Pennington
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Patent number: RE38336Abstract: A hydroelectric turbine and a method of using the turbine in an open body of water to produce electric power is described. A turbine has a large opening to allow a stream of water to pass through. The turbine is supported by a plurality of rubber tires such that a reaction force from the stream of water holds against the tires. A frame with a floatation chamber is used to lower the turbine into position in the stream of water, and to raise the turbine to a horizontal position on the surface of the body of water. The floatation chamber is partially filled with water to lower the turbine in the body of water such that an air pocket exists in the chamber to orient the turbine in a vertical position. When the chamber is purged of water, the turbine is raised to the surface. Rotation of the turbine drives the tires, which drive pumps to pump fluid to a motor, which drives an electric generator to produce power.Type: GrantFiled: January 14, 1999Date of Patent: December 2, 2003Inventor: Herbert L. Williams