1
Otilio Nemec: Large vertical-axis variable-pitch wind turbine. November 20, 2001: US06320273 (75 worldwide citation)

Several improvements are invented upon a known and well tested selfstarting vertical-axis wind turbine, for economically competitive power production by driving large grid-connected AC generators. It comprises:


2
Vic Kane: Wind turbine. Chernoff Vilhauer McClung & Stenzel, May 9, 2006: US07040859 (69 worldwide citation)

A wind turbine operable as either a vertical axis wind turbine or a horizontal axis wind turbine is disclosed.


3
James R Ringrose, Leonard G Dahle: Wind turbine. Leland O Lane, Klarquist Sparkman Campbell Leigh Whinston & Dellett, October 26, 1982: US04355956 (60 worldwide citation)

A vertical axis wind turbine includes a rotating frame carrying a plurality of flexible, resilient blades rigidly secured at their leading edges to the rotating frame. The trailing edges of the blades, which are free to flex, react to the wind for producing a force in the direction of rotation of th ...


4
Howard R Kutcher: Vertical axis wind turbine. Aluminum Company of America, Max L Williamson, May 15, 1984: US04449053 (59 worldwide citation)

A Darrieus-type vertical axis wind turbine is disclosed which includes a vertically extending rotor tube mounted on a support structure with two or three rotor blades of troposkein configuration on the rotor tube for rotating the tube in response to wind energy and thereby drive a generator to produ ...


5
Vernon R Wallace, Michael S McMullen, William R Archibald: Vertical axis wind turbine with pultruded blades. FloWind Corporation, Limbach & Limbach, December 27, 1994: US05375324 (59 worldwide citation)

A pultruded composite blade for a Darrieus-type vertical axis wind turbine is disclosed, along with a method for fabricating such a blade. The blade is a composite structure with a uniform cross-section with reinforcing fibers at least some of which extend parallel to a lengthwise central axis and r ...


6
Paul Harvey Hartman: Wind turbine and energy distribution system. February 12, 2008: US07329099 (56 worldwide citation)

A new design of vertical axis wind turbine is disclosed based on a dome structure using dome struts as blades that work in concert to produce rotational motion. The stability and low cost of the new design allows the turbine to function in low wind speed regimes as well as high speed winds that woul ...


7
Rollin Douglas Rumsey: Vertical axis wind turbine motor. Hill Gross Simpson Van Santen Steadman Chiara & Simpson, October 4, 1977: US04052134 (56 worldwide citation)

A wind power conversion turbine motor has a body supported to rotate about a vertical axis and carrying a plurality of substantially upright vanes substantially spaced from the vertical axis and circumferentially spaced from one another so that wind thrusting propulsively against outer sides of the ...


8
Frederick C Gilman: Vertical axis wind turbine for generating usable energy. Daniel H Bobis, Norman N Popper, October 6, 1981: US04293274 (56 worldwide citation)

A wind turbine for converting wind forces into usable energy has a main shaft rotatably mounted in the axis of rotation for the wind turbine, and a pair of coacting complementary longitudinally extending vane members are connected to each other by a plurality of support and transmission assemblies i ...


9
Kazuichi Seki, Yoshio Shimizu, Yoshio Kato: Vertical axis wind turbine. Gakko Hojin Tokai University, Koda and Androlia, January 27, 1981: US04247253 (54 worldwide citation)

Wind turbines are largely divided into vertical axis wind turbines and propeller (horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with rotational speed control systems. This vertical axis wind turbine is formed by having blades of a pr ...


10
Vernon R Wallace, Michael S McMullen, William R Archibald: Vertical axis wind turbine with pultruded blades. FloWind Corporation, Limbach & Limbach, March 19, 1996: US05499904 (51 worldwide citation)

A pultruded composite blade for a Darrieus-type vertical axis wind turbine is disclosed, along with a method for fabricating such a blade. The blade is a composite structure with a uniform cross-section with reinforcing fibers at least some of which extend parallel to a lengthwise central axis and r ...