51
David A Skelskey: Wind turbines. Chicago Province of the Society of Jesus, FitzGibbon Roehrig Greenawalt & Stone, September 13, 1983: US04403916 (29 worldwide citation)

A wind turbine having a generally vertically extending support tower upon which are mounted a front or blade section and a rear or tail section. The front section includes a generally horizontal drive shaft which is connected to a vertical drive shaft in the support tower. The rear or tail section i ...


52
Chan Shin: Multi-unit rotor blade system integrated wind turbine. Watson Cole Grindle Watson P L L C, March 2, 1999: US05876181 (29 worldwide citation)

The described wind turbine has a set of propeller type wind force collecting rotor turbines which is comprised of an up-wind auxiliary rotor blade turbine, being disposed on the front end of the combined bevel-planet gear assembly, and a down-wind main rotor blade turbine together with attached exte ...


53
Kevin L Cousineau: Microcontroller based control system for use in a wind turbine. Zond Systems, Cushman Darby & Cushman, June 6, 1995: US05422826 (28 worldwide citation)

A distributed module control system for controlling a wind turbine using multiple controls and monitors comprising multiple modules that include microcontrollers, and having data input terminals and data output terminals; high level logic circuitry interconnecting the modules via selected data input ...


54
John L Loth: Overspeed control arrangement for vertical axis wind turbines. Schuyler Birch Swindler McKie & Beckett, August 8, 1978: US04105363 (27 worldwide citation)

This invention is an overspeed control arrangement for vertical axis wind turbines employing normally vertically positioned rotor blades, said control arrangement allows the rotor blades to tilt either forward or backwards to form a swept wing configuration, at wind turbine speeds beyond the design ...


55
Thomas L Clark: Windjet turbine. Dennis T Griggs, March 5, 2002: US06352473 (27 worldwide citation)

A roof-mounted wind turbine includes turbine vanes that are linear-shaped and do not have the conventional convex curvature. Additionally, the turbine vanes are made in common with one another or with a common turbine component, so that each vane does not require individual handling nor individual a ...


56
Thomas L Clark: Windjet turbine. Dennis T Griggs, June 24, 2003: US06582291 (27 worldwide citation)

A roof-mounted wind turbine includes turbine vanes that are linear-shaped and do not have the conventional convex curvature. Additionally, the turbine vanes are made in common with one another or with a common turbine component, so that each vane does not require individual handling nor individual a ...


57
Cheng Ting Hsu: Tornado type wind turbines. Iowa State University Research Foundation, Zarley McKee Thomte Voorhees & Sease, June 5, 1984: US04452562 (26 worldwide citation)

A tornado type wind turbine has a vertically disposed wind collecting tower with spaced apart inner and outer walls and a central bore. The upper end of the tower is open while the lower end of the structure is in communication with a wind intake chamber. An opening in the wind chamber is positioned ...


58
Erik Nim: Wind turbine with floating foundation. Vestas Wind Systems, Stites & Harbison PLLC, Douglas E Jackson, January 2, 2007: US07156586 (26 worldwide citation)

A floating foundation for wind turbines is disclosed, where the foundation essentially comprises at least three submerged buoyancy bodies connected to the lower end of the tower of the wind turbine at a common node member situated well above the surface of the sea. The buoyancy bodies are connected ...


59
Aloys Wobben: Method for operating a wind turbine. Seed IP Law Group PLLC, November 15, 2005: US06965174 (25 worldwide citation)

The present invention relates to a method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto. The object of the present invention is to define a method for operating a wind t ...


60
Emilian Mieczyslaw Moroz, Kirk Gee Pierce: Methods and apparatus for reduction of asymmetric rotor loads in wind turbines. General Electric Company, James E McGinness Esq, Armstrong Teasdale, October 10, 2006: US07118339 (25 worldwide citation)

A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to reduce or counter asymmetric rotor l ...