US6779966B2 - Horizontal windmill - Google …
The windmill of claim 5 wherein the airfoil support is mounted on the vertical shaft in an approximately horizontal position. 11. The windmill of claim 1 wherein the stop is positioned less then the length of the wind capturing means from the airfoil location.
US3920354A - Horizontal hinged-flap windmill - …
A windmill which rotates in a horizontal plane about a vertical axis includes a plurality of aligned and usually overlapping flaps which move upwardly and downwardly about horizontal hinges to operating and feathered positions as the windmill rotates, with the flaps being held in operating or closed position, at which the force of the wind tends to rotate the mill, by the pressure of the wind ...
US6921986B2 - Horizontal omni-directional …
A horizontal omni-directional windmill according to claim 9, wherein said windmill is rotatable about its vertical axis. 12. A horizontal omni-directional windmill according to claim 9 , wherein said windmill further includes means for coupling said rotor to a power generator.
US4047834A - Horizontal multidirectional turbine …
A horizontal multidirectional turbine windmill comprising a housing having apertures on all sides for ingress and egress of air and a rotor on a drive shaft within the housing, each aperture being the larger end of a funnel-shaped passage, the smaller ends of said passages being positioned to deliver air at relatively high velocities against the rotor buckets, the air entering the housing ...
JPS58119976A - Horizontal rotary windmill - …
horizontal rotary rotary windmill windmill horizontal Prior art date 1982-01-07 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Pending Application number JP10626382A Inventor Gasafui Anton Original ...
Horizontal omni-directional windmill - patents.com
Horizontal omni-directional windmill Abstract. This invention relates to a horizontal omni-directional windmill comprising a rotor including an upper platform and a lower platform, a plurality of identically configured blades, wherein each of the blades is of a substantially aerodynamic configuration, each of the blades being oriented at a broad angle relative to the radius of the rotor, the ...
Horizontal hinged-flap windmill (Patent) | OSTI.GOV
Abstract. A windmill which rotates in a horizontal plane about a vertical axis includes a plurality of aligned and usually overlapping flaps which move upwardly and downwardly about horizontal hinges to operating and feathered positions as the windmill rotates, with the …
US Patent for Windmill Patent (Patent # 4,191,507 …
Each of the three horizontal sides of the prism supports a different one of the windmill vane arrays 11A-11C. These vane arrays are identical and only vane array 11A will be described, it being understood that vane arrays 11B and 11C are constructed in the same manner and operate in the same way. The corresponding parts of vane arrays 11B and 11C have the same reference numerals in the drawings …
CA1202675A - Windmill - Google Patents
Abstract Disclosed is an inclined axis windmill. The windmill has a plurality of blades generally transverse to the upstanding rotor shaft. The blades have an airfoil cross-sectional shape and are oriented with a negative angle of attack, thereby allowing the leading edge of the airfoil to turn into the wind. The windmill preferably has a tilting assembly which tilts the rotor shaft and blades ...
Horizontal Axis Wind Turbines – HAWT - Turbines …
Horizontal-axis wind turbines (HAWT) have the main rotor shaft and electrical generator at the top of a tower, and may be pointed into or out of the wind. Small turbines are pointed by a simple wind vane, while large turbines generally use a wind sensor coupled with …
US4247253A - Vertical axis wind turbine - Google …
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 proper airfoil fitted to respective supporting arms provided radially from a vertical rotating ...
Google Patents
Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature.
US Patent for Compound coaxial windmill Patent …
A horizontal axis windmill in which there is employed a conventional propeller mounted at one end of a fuselage housing a generator, and there is also located in the fuselage an induction fan. The fan functions to increase the volume of air moving through the propeller and in a direction coordinate with the direction of rotation of the propeller, thus to improve the efficiency of the windmill.
US Patent for Windmill Patent (Patent # 4,566,853 …
A vertical axis windmill with a plurality of horizontal arms (16) mounted on an upright central axis (12) so as to rotate in a substantially horizontal plane. Each arm (16) has hinged at its free end a blade 18 which is downwardly depending. Each blade 18 being mounted at an angle of pitch to the respective end of the arm (16) of from 20.degree. to 80.degree. and also mounted at an angle of ...
Vertical axis windmill (Patent) | OSTI.GOV
Abstract. A vertical axis windmill is described which involves a rotatable central vertical shaft having horizontal arms pivotally supporting three sails that are free to function in the wind like the main sail on a sail boat, and means for disabling the sails to allow the windmill to be stopped in a blowing wind.
Horizontal windmill - DECKER; BERT J. - Free …
13.09.1977 · A horizontal windmill includes a vertical tubular internal baffle member, a plurality of vanes responsive to the wind, mounted and positioned so that they revolve horizontally when the wind blows, partially rotating to resist the force of the wind in some positions during such revolution and being feathered with respect to it in other positions, and a vertical baffle located outside the path ...
Patents Assigned to Windsunwatt, Inc. - Justia …
Justia - Patents - Patents and Patent Application Resources. Abstract: A horizontal multidirectional turbine windmill comprising a housing having apertures on all sides for ingress and egress of air and a rotor on a drive shaft within the housing, each aperture being the larger end of a funnel-shaped passage, the smaller ends of said passages being positioned to deliver air at relatively high ...