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| Number | Title | Issue Date |
| 8152440 | Resistive contact sensors for large blade and airfoil pressure and flow separation measurements A wind turbine blade instrumentation structure and method is provided for fluid dynamic polymer-based contact sensors measuring ambient pressure based on the resistivity changes across the sensor. The pressure sensors may applied in predetermined patterns to airfoil... | 04/10/2012 |
| 8109711 | Tethered autonomous air vehicle with wind turbines A wind turbine energy conversion device that can take advantage of the higher speed and more persistent winds at higher altitudes is hereinafter disclosed. The wind turbine energy conversion device includes an unmanned aerial vehicle (UAV) connected to one end of a ... | 02/07/2012 |
| 8052372 | Wind turbine A wind driven turbine device is disclosed that includes a housing having an air inlet and an air outlet, a turbine rotor having a plurality of radially distributed turbine rotor blades mounted in the housing for rotation in direct response to atmospheric wind to the... | 11/08/2011 |
| 7959404 | Wind turbine A wind turbine for generating electricity has been developed. The turbine includes a housing for securement to a support. A wheel is mounted within the housing and is rotatable about a horizontal axis. The wheel has an axle assembly and a number of blade assemblies ... | 06/14/2011 |
| 7931435 | Wind power megawatts producer A bamboo wind power megawatts producer is provided in which the surfaces of rotor blades capture and compress the laminar flowing wind through the turbulent rotor vortex wherein great amounts of energy are extracted from the wind in volumetric quantities within the ... | 04/26/2011 |
| 7931434 | Device for producing mechanical energy by means of a divergent, telescopic and auto sustained chimney A telescopic chimney and methods are disclosed for generation of mechanical energy using air routed through a turbine. Truncated cones stored nested together telescope to interlock when extended end to end to form a conical shape that diverges upwardly. An air outpu... | 04/26/2011 |
| 7887283 | Wind turbine assembly A wind turbine apparatus reactive to fluid flow comprises a turbine assembly (64) rotatably supported for generating energy and a fluid flow control assembly (104, 106, 108, 110, 112) to control fluid flow acting upon the turbine assembly (64). ... | 02/15/2011 |
| 7744338 | Fluid turbine systems Various fluid turbine systems and methods are described. The turbine can be a vertical axis wind turbine configured to generate power from wind energy. The turbine system can have a blade assembly. The blade assembly can have a plurality of blades rotatable about an... | 06/29/2010 |
| 7695242 | Wind turbine for generation of electric power A turbine includes a stack of substantially parallel disks, the rotation of which causes rotation of a shaft. The disks are separated by peripheral spacers, each peripheral spacer having the shape of an airfoil. Each peripheral spacer defines a chord which is angled... | 04/13/2010 |
| 7670101 | Portable hydro-generator A portable hydro-generator, for the generation of power, including a tower (10) filled with a driving fluid, a semi-sealed curved tubular housing with a drive portion and a return portion primed with a fluid, the drive portion having a larger diameter than th... | 03/02/2010 |
| 7362004 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 04/22/2008 |
| 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 |
| 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 |
| 7329965 | Aerodynamic-hybrid vertical-axis wind turbine An aerodynamic-hybrid, vertical-axis wind turbine which includes a rotor airfoil and stator blade combination which maximizes energy production by increasing wind velocity and pressure while eliminating back pressure and improving the laminar flow of wind both aroun... | 02/12/2008 |
| 7319278 | Ocean wave generation An ocean wave generator includes a buoy for floating on the surface of the ocean. A generator is mounted to the buoy. A pulley is mounted on the generator for turning the generator. An anchor cable has a first end wrapped around the pulley and an anchored second end... | 01/15/2008 |
| 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 |
| 7276810 | Wind power plant based on the windmill principle with an additional vane bearing at the vane end The present invention concerns a wind power plant with a central rotor unit (1); a ring carrier element (2), which surrounds the central rotor unit (1) in a concentric configuration; and with several rotor vanes (3) which are fixed with a... | 10/02/2007 |
| 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 |
| 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 |
| 7215037 | Protective wind energy conversion chamber A protective wind energy conversion chamber provides a protected multiple turbine mechanism axially aligned to convert kinetic energy of a moving fluid (e.g., wind) into rotational mechanical power by the reaction of the moving fluid with the turbine. The conversion... | 05/08/2007 |
| 7189051 | Wind power plant A wind power plant includes four main elements: a foundation (29), at least one supporting structure (21), a carrying construction (23) having a vertical axis (25) and being rotatable around the vertical axis, and at least one rotor (4... | 03/13/2007 |
| 7182573 | Wind turbine A wind turbine, with: a rotatable frame; a plurality of airfoils mounted to the rotatable frame, wherein the airfoils extend parallel to an axis of rotation of the rotatable frame; a wind block positioned to restrict airflow over at least a portion of the rotatable ... | 02/27/2007 |
| 7183665 | Direct drive wind turbine A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially insid... | 02/27/2007 |
| 7132758 | Extracting power from a fluid flow An apparatus for extracting power from a fluid flow comprises a fluid driveable engine, a conduit, disposed to enable fluid communication between a portion of the fluid flow, the fluid driveable engine and a transmission fluid, the fluid in the fluid flow and the tr... | 11/07/2006 |
| 7132760 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 11/07/2006 |
| 7109599 | Omni-directional wind turbine electric generation system An omni-directional wind turbine electric generation system including a wind rotor carrying wind responsive vanes which on one surface exert an aerodynamic lifting force and on the other a blocking force both of which exert a torque in the same rotational sense, and... | 09/19/2006 |
| 7098553 | Traffic-driven wind generator A wind-capturing electrical generator device comprising a plurality of generators is driven by wind created by traffic passing in close proximity at high speeds. The device preferably uses horizontally or vertically mounted Savonius-type or helical-turbine-type roto... | 08/29/2006 |
| 7094017 | Vertical shaft driving device for vertical wind mills or the like and electric power generator using the same A vertical shaft driving device wherein a plurality of rotary blades (8a, 8b, 8c and 8d) each including a blade (10) supported on a planetary shaft are equally arranged circumferentially of a central sha... | 08/22/2006 |
| 7086824 | Guided fluid driven turbine A guided fluid driven turbine to upgrade the efficiency in converting fluid kinetics into rotation kinetics by having a specific directional guide unit adapted to a fluid driven turbine for the fluid to be guided the open-end, specific directional guide unit extendi... | 08/08/2006 |
| 7088012 | Transverse hydroelectric generator A power plant extracts energy from a free flowing motive fluid by means of a transverse mounted generator with its rotor extending downward into the flow. Runner blades with hinges attain the greatest surface area when the flow is tangent to and in the same directio... | 08/08/2006 |
| 7084522 | Wind energy unit comprising a hollow shaft for rotor hub and generator In a wind power installation with a (hollow) axis tube member and a hollow shaft mounted thereon for the rotor there is provided only a single bearing which also carries moments, between the axis tube member and the hollow shaft, whereby the parts of the machine whi... | 08/01/2006 |
| 7084523 | Windmill for wind power generation A windmill for highly efficient wind power generation is provided by enabling one to efficiently rotate the windmill even in starting or at a low wind speed region by improving a blade of a vertical shaft type windmill of a lift type. In the windmill for wind power ... | 08/01/2006 |
| 7075189 | Offshore wind turbine with multiple wind rotors and floating system A wind energy conversion system optimized for offshore application. Each wind turbine includes a semi-submersible hull with ballast weight that is moveable to increase the system's stability. Each wind turbine has an array of rotors distributed on a tower to distrib... | 07/11/2006 |
| 6972498 | Variable diameter wind turbine rotor blades A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can ... | 12/06/2005 |
| 6945752 | Azimuthal driving system for wind turbines Wind power installations generally have an active drive for wind direction tracking. The active drive rotates the machine housing of the wind power installation in such a way that the rotor blades of the rotor are oriented in the direction of the wind. Multiple azim... | 09/20/2005 |
| 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 |
| 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 |
| 6809432 | Wind power generating system A wind power generating system for generating electricity from wind generated by moving vehicles. The wind power generating system includes at least one generating assembly being designed for being positioned proximate the road. The generating assembly is designed f... | 10/26/2004 |
| 6798080 | Hydro-power generation for a water treatment system and method of supplying electricity using a flow of liquid A hydro-power generation system for use in conjunction with a water treatment system is disclosed. The embodiments of the hydro-power generation system include an impeller rotatably positioned in a housing. The impeller is rotatably coupled with a generator. When wa... | 09/28/2004 |
| 6559552 | Rain, wind, wave, and solar energy 4-in-1 electric generating installation The rain, wind, wave, and solar energy 4-in-1 electric generating installation comprises mainly a wind wheel (2), a water wheel (3) two solar plates (1 and 1A), a wind and current plate (4), a turntable (6), and four floats (14). All these components work... | 05/06/2003 |