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| Number | Title | Issue Date |
| 7354245 | Wind power generation device A wind power generation device capable of improving power generation efficiency is provided. The wind power generation device according to the present invention comprises: a substantially cylindrical duct 1 having a side wall with a substantially wing section... | 04/08/2008 |
| 7331761 | Wind turbine pitch bearing and method A pitch bearing and related method for wind electric turbines has an annularly-shaped first bearing ring connected with an associated wind turbine blade, and includes a first raceway groove. An annularly-shaped second bearing ring is connected with the rotor portion... | 02/19/2008 |
| 7309213 | Wind sail receptor A wind sail receptor for turning in a wind or water flow to operate a power generator that includes from six to ten identical, equal spaced blades, that are formed from two flat sections of a stiff material and are arranged between a rear hub and spaced apart forwar... | 12/18/2007 |
| 7255527 | Wind power generator A wind power generator has a base, a wind driving wheel, a transmission unit and a power storage unit. The wind driving wheel has a spindle at a center of the wind driving wheel. The spindle is positioned to the lateral frame. A plurality of connecting frames are ex... | 08/14/2007 |
| 7256512 | Variable aperture velocity augmented ducted fan wind turbine A wind powered variable area exit aperture electric generating system having configurable, adjustable duct side walls by which means the ratio between the intake cross-sectional aperture area and the exhaust cross-sectional aperture area may be varied for maximum ai... | 08/14/2007 |
| 7244102 | Reinforced hub for the rotor of a wind energy turbine The hub for the rotor (22) of a wind energy turbine (10) comprises a hollow body (28) rotatable around a rotation axis and provided with at least one flange (34) for mounting to the hollow body (28) a bearing for a rotor blade (... | 07/17/2007 |
| 7220096 | Habitat friendly, multiple impellor, wind energy extraction A habitat friendly, wind energy system is disclosed for safely extracting usable energy from wind. Included are one or more concentrator wings that convert the dynamic pressure of wind into relatively lower static pressure and thereby induces a vacuum that draws win... | 05/22/2007 |
| 7214029 | Laminar air turbine The windmill assembly is a low drag, streamlined body of revolution that captures the kinetic energy content of the accelerated laminar air surrounding the body. The assembly includes a power-generating, wind-driven turbine that is compact, lightweight and capable o... | 05/08/2007 |
| 7210896 | Electrical power generation assembly An electrical power generation assembly comprising a main body having a low density to provide lift and wind driven means on its surface to generate electrical power. The main body has a part-circular, or a part-elliptical, cross section frontal region. The main bod... | 05/01/2007 |
| 7147428 | Hydro turbine A water driven turbine has a divergent cone coupled to the exit end of the housing in which diameter of the cone increases with increasing distance from the exit end of the housing. A diverter formed of rigid material surrounds the free end of the cone and defines a... | 12/12/2006 |
| 7094018 | Wind power generator A wind power generator has an arcuate converging-diverging flow passage and a support body that is prolate in shape and is located in the flow passage. The support body is rotatably supported and a plurality of rotor blades are mounted on the support body. The suppo... | 08/22/2006 |
| 7083378 | Wind generator The present invention relates to a wind generator. The wind generator comprises a body installed freely rotatably at a tower, blades installed at a leading end of the body, a gearbox for receiving rotational forces from the blades, and a generator connected to the g... | 08/01/2006 |
| 7066709 | Wind driven power generating system The present invention discloses a wind driven power generator. The wind driven power generating system comprises: a) an aerodynamic unit rotatably mounted at the top of a tower having a certain height; b) a plurality of rudders for aligning the aerodynamic unit with... | 06/27/2006 |
| 7044711 | Helical device for conversion of fluid potential energy to mechanical energy This device utilizes a helical baffle inside of generally cylindrical housing to convert potential energy of a fluid to kinetic and/or mechanical energy that can be captured for productive use. The housing's axis is positioned at an angle from horizontal and the flu... | 05/16/2006 |
| 6979171 | Maritime energy generating device A maritime energy generating device including a windmill mounted on a floating foundation, the windmill having a machine compartment mounted at the top of a tower and the foundation being fixed to the bottom of a water body by a connection and including two tanks an... | 12/27/2005 |
| 6966747 | Wind turbine having airfoils for blocking and directing wind and rotors with or without a central gap A wind turbine device of increased efficiency is comprised of a set of fixed airfoils that direct wind into a rotor having a plurality of blades. The fixed airfoils may extend to the ground to increase the amount of wind directed into the rotor and may be manufactur... | 11/22/2005 |
| 6957947 | Hydroelectric turbine A hydroelectric turbine anchored in a body of water which produces electricity directly from its housing. The turbine is in and of itself a generator whose housing is its stator and whose blade it its rotor. ... | 10/25/2005 |
| 6951443 | Wind turbine ring/shroud drive system A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric ... | 10/04/2005 |
| 6945747 | Dual rotor wind turbine A dual rotor wind turbine according to the present invention includes a rotatable drive shaft, a first rotor assembly connected to the drive shaft, a second independently-rotating rotor assembly coupled to the drive shaft rearward of the first rotor assembly, a firs... | 09/20/2005 |
| 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 |
| 6932561 | Power generation system A wind power system is provided including at least one generator fan having a front face and a rear face. The system also includes a first wind capturing device positioned proximate to the front face. The wind capturing device can be configured to capture wind to cr... | 08/23/2005 |
| 6921243 | Device for producing electric current from wind energy The system comprises a nacelle mounted to turn about a vertical axis on the top of a mast and carrying a rotary portion which rotates about a substantially horizontal axis in a large diameter bearing. The rotary portion comprises a hub to which blades are fixed. The... | 07/26/2005 |
| 6872049 | Wind turbine comprising a planetary gear A wind turbine with a rotor, a nacelle and a tower. The nacelle comprises a planetary gear (4) with a planetary holder (5), on which the hub (6) of the rotor is rigidly secured, and which can be connected to the shaft of an electric generator. T... | 03/29/2005 |
| 6835043 | Hydraulic turbine feed tank An installation comprising a turbine equipped with a wheel rotatable about an axis (X-X′), and a tank feeding the turbine. The feed tank having, projecting on a plane globally perpendicular to the axis (X-X′), an external spiral shape. The feed tank forms a heli... | 12/28/2004 |
| 6729840 | Hydroelectric powerplant A powerplant for use in high head applications (dams) which allows marine animals (fish, otters, turtles, etc.) to swim safely from one side of the dam to the other. The turbine blades which take energy from the water to produce electricity have a large hole through... | 05/04/2004 |
| 6648589 | Hydroelectric turbine for producing electricity from a water current The invention takes energy from the periphery of a hydro electric turbine blade to produce electricity by mechanically driving a plurality of generators without the use of a hydraulic system.... | 11/18/2003 |
| 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 |
| 6612810 | Wind turbine blade with a system for deicing and lightning protection Wind turbine blade comprises a first (1) and a second (2) electric conductor extending in the longitudinal direction of the blade (25), and one or more electric heating elements (4) for heating the surface of the blade. The heating elements (4) are connec... | 09/02/2003 |
| 6609889 | Method and a device for adjusting the pitch and stopping the rotation of the blades of a wind turbine A method and mechanism for adjusting/controlling the pitch of at least one blade of a wind turbine relative to a wind direction parallel to a longitudinal main shaft of the wind turbine use a mechanism with a motor for rotating drive wheels in the angle g... | 08/26/2003 |
| 6602045 | Wingtip windmill and method of use The present invention is a system and method for enhancing the generation of power with a windmill. It comprises a horizontal axis rotating propeller with a large hub, mounted on a lift-generating device which also acts as the support structure. By adding... | 08/05/2003 |
| 6520737 | Offshore wind turbine with liquid-cooling An offshore wind turbine is disclosed wherein the power transmission in the nacelle is cooled by means of a liquid conducted to the nacelle from the tower on which the nacelle is pivotally arranged around a vertical yawing axis. The liquid transfers heat ... | 02/18/2003 |
| 6439832 | Device for preventing penetration of corrosive salt particles in an offshore wind energy facility Device for preventing the penetration of corrosively acting salt particles into the generator and gear area of an offshore wind power plant, with an air pressure generator for introducing air under an overpressure into at least a substantially closed part... | 08/27/2002 |
| 6382904 | Windmill powerplant A wind power unit, that uses the power of wind, is made as a support installed power-generating unit comprising at least one turbine with a nozzle apparatus mechanically connected to a generator, a central shell, an annular front shell having at least one... | 05/07/2002 |
| 6375424 | Magnus effect horizontal axis wind turbine A turbine and method which employ kinetic and potential energy of a fluid to obtain mechanical and/or electric energy, is founded on the use of bulb shaped rotating blades that interact with a fluid, such as water or air, Each rotating blade rotates aroun... | 04/23/2002 |
| 6270308 | Wind generator A wind generator with a rotor which rotates in the horizontal direction and has a plurality of rotor blades, wherein the rotor blades are surrounded in some areas by a fairing, the fairing being aligned according to the wind direction so that the rotor bl... | 08/07/2001 |
| 6224338 | Polygonal windmill The polygonal windmill is essentially a windmill with the blade components contained within a rigid polygonal frame, preferably cubic in shape. The polygonal windmill relies on its much larger wind surface area rather than high speeds for energy productio... | 05/01/2001 |
| 6176675 | Yawing device and wind power plant comprising a yawing device A damping coupling is provided to reduce the oscillations of the yawing device of a wind power plant. The damping coupling transmits forces from a driving device to a yaw drive, and the damping coupling is arranged and positioned in such a way that the tr... | 01/23/2001 |
| 6168373 | Dual hydroturbine unit 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 effec... | 01/02/2001 |
| 5167483 | Method for utilizing angular momentum in energy conversion devices and an apparatus therefore An energy conversion device which benefits from forces associated with angular momentum. A mass such as fluid is directed through a conduit from one elevation to a lower elevation with the conduit configured to conform to a decreasing cross-sectional area... | 12/01/1992 |
| 5137417 | Wind energy conversion system A wind energy conversion system includes specially shaped blades mounted in a specific location on a specially shaped blade-supporting body to maximize energy conversion from wind energy to electrical energy. The blade-supporting body includes a concave s... | 08/11/1992 |
