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8109722 |
Turbine and system for generating power from fluid flow and method therefor
A turbine for use with a turbine generator, the turbine including at least one turbine blade for positioning in a flowpath, a hub mounting the at least one turbine blade, and a rotatable shaft in...
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8033794 |
Wind turbine
A wind turbine includes a nacelle that houses a dynamo and a vane wheel coupled to an end of the dynamo. The nacelle is movably mounted to a post. The nacelle has a body forming a circumferentially...
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7847426 |
Wind power generation
A wind power generating system is disclosed. The wind power generating system comprises a plurality of blades to capture wind energy; a shaft coupled to the plurality of blades, and a power...
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7522976 |
Method for adapting a wind energy installation to given wind conditions
A method for operating a wind energy installation, in particular for adapting a wind energy installation (10) to given wind conditions, the wind energy installation (10) having a rotor (16), which...
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7436083 |
Up-wind type windmill and operating method therefor
A structure of an upwind type wind turbine and the operating method thereof capable of preventing the occurrence of damage of the blades by evading excessive irregular loads from acting on the...
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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...
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7014416 |
Control vane for a wind turbine
A wind turbine uses a support tower with a rotatable upper portion supporting an electric generating turbine. A set of radially oriented blades rotate in a vertical plane. A control vane is mounted...
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6979175 |
Downstream wind turbine
A downstream wind turbine for converting wind energy into electrical energy. In a preferred embodiment the downstream wind turbine adapted to respond to high winds and gyroscopic precession. The...
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6942454 |
Vertical axis wind turbine
The vertical axis wind turbine has two counter-rotating rotors mounted on first and second spaced apart vertical axes. Each rotor has a plurality of rotor blades extending generally inwardly from...
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6142757 |
Integral oil pump
An integral oil pump for an apparatus having a plurality of bearings, the oil pump comprising a housing with an opening for a shaft, a cavity within the housing, a ring gear encircling the shaft...
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6132172 |
Windmill
An improved windmill includes a conical rotor unit, a frame for supporting the conical rotor unit and a base for supporting the frame. The conical rotor unit has a conical rotor with a plurality of...
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6132181 |
Windmill structures and systems
A windmill having a plurality of radially extending blades, each being an aerodynamic-shaped airfoil having a cross-section which is essentially an inverted pan-shape with an intermediate section,...
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6113350 |
Vertical-axle power machine
A vertical-axle wind power machine comprises a vertical axle, a plurality of jointed radial arms, a plurality of counterbalanced oblique blades at the support points thereof, a friction-rewarding...
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5855470 |
Wind wheel with rotationally faced plates
This invention accomplishes these and other objectives with a wind wheel (1) having at least one planetary gear wheel (10) affixed rigidly to a wind-wheel axle (2) from which gear trains for each...
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5669758 |
Wind turbine
A wind turbine having a central deflecting cone and a shroud surrounding the cone. The shroud in cooperation with the cone direct air flow to turbine blades which extend across the narrowest gap...
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5584655 |
Rotor device and control for wind turbine
A wine turbine with blades having a high lift-to-drag ratio is provided. A hydraulic or other control system is used to control cone angle, such as in response to flap moment. Pitch of blades is...
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5178518 |
Free-yaw, free-pitch wind-driven electric generator apparatus
Wind-driven electric generator apparatus has a generator head supported on a tower for free-yaw movement and for free-pitch movement within predetermined limits. The generator head has a downwind...
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4966525 |
Yawing device and method of controlling it
A windmill is provided with a yawing device which includes two or more gear motors disposed about the periphery of a stationary tower toothed rim. Each gear motor has a driving wheel attached at an...
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4850798 |
Modified helicoidal wind responsive device
A wind actuated device which has a sail in the shape of a double or single modified helicoid. The device may be provided as a decorative novelty device or may be supported on a mast as a wind...
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4832571 |
Flexible tethered wind turbine
This invention relates to a flexible tethered wind turbine useful, among other things, for generating electricity. A flexible shaft supported by guy wires is provided at its upper end with a...
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4722665 |
Turbine
A water turbine has a series of spaced blades attached to and extending around the periphery of a body portion, preferably of conical or similar shape; each of the blades has a leading end mounted...
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4710100 |
Wind machine
The wind machine has at least two rotors fixed to a tower. The tower is rotatably supported by a foot bearing at its base and a second bearing positioned below a horizontal stud which supports a...
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4692094 |
Rotary positionable installation
The invention shows a rotary positionable installation, such as a wind power, having a tower (11), and an apparatus carrier supported on the tower so as to be rotatable about its axis and rotary...
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4678923 |
Windmill
A windmill for generating electricity in which each blade of the air-screw is connected to the hub by means of at least two resilient strips which are oppositely inclined both in the plane of...
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4673822 |
Wind electric generator
Wind mill blades are mounted on spokes provided on a power shaft via springs, and thereby in an ordinary wind velocity the wind mill blades are adjusted into a prescribed angle, while in a storm...
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4632637 |
Wind turbine
A high speed, downwind horizontal axis wind turbine includes three circumferentially spaced lightweight blades having inner support arms and radially outwardly disposed airfoil configured blade...
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4624648 |
Aerial toy
A rotary aerial toy comprising a tubular sleeve of flexible material and of circular cross section. In one form of the invention the tubular sleeve tapers from one end toward the other with air...
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4619582 |
Apparatus for recovering the energy of a moving fluid
Apparatus for recovering energy from a moving fluid, comprising a frame that rolls on a circular track about a vertical upright that is secured to the ground. Vanes on the frame respond to fluid...
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4598210 |
Water current motor
A hull floating on a body of water is tethered by an anchored mooring cable so that it is disposed to trail from the anchor in a current. The hull supports a rotary load such as an electric...
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4571155 |
Wind turbine yaw stabilizer
A vane pivotally mounted atop a wind turbine, rotatably mounted on a support structure, rotates freely with the wind. A cam is affixed to and rotatable with the vane. A toothed wheel is...
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4557666 |
Wind turbine rotor
A fixed pitch wind turbine rotor (18) is teeter mounted (76, 78, 80) onto a low speed input shaft (44) which is connected to the input (58) of a step-up transmission (46). The output (48) of the...
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4550259 |
Device for converting wind energy into another form of energy
The invention relates to a device for converting wind energy into another form of energy comprising a plurality of propellers having equidirectional shafts, being arranged in a matrix and driving...
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4545728 |
Wind turbine generator with improved operating subassemblies
A wind turbine includes a yaw spring return assembly to return the nacelle from a position to which it has been rotated by yawing forces, thus preventing excessive twisting of the power cables and...
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4534705 |
Horizontal-shaft wind turbine with few blades
A horizontal shaft wind turbine with few blades, is provided with device for turning or twisting the blades about their longitudinal axes, comprising a power source situated outside the turbine...
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4533297 |
Rotor system for horizontal axis wind turbines
A rotor system for horizontal-axis wind turbines is provided having compound coning and a sweep angle to improve the rotor system's yaw responsiveness and stability and to reduce vibration and...
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4522564 |
Wind-driven generator apparatus
Disclosed is a wind-driven generator apparatus with variable pitch blades. The apparatus includes a yaw damping arrangement for resisting weathervaning rotation of a head assembly of the apparatus...
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4515525 |
Minimization of the effects of yaw oscillations in wind turbines
Yaw (fishtail) oscillations in large wind turbines (10) are minimized by damping provided by a drive motor (65) connecting the turbine to the supporting tower (50) therefor at, for example, a yaw...
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4474531 |
Windmill with direction-controlled feathering
A windmill employs a separate wind vane pivotably mounted on the chassis of the windmill. An internal sensor detects the relative angle between the wind vane and the windmill and activates the...
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4469956 |
Windmill support structure
A windmill installation (10) includes a windmill (12) supported on a tower (18) that includes three legs (20, 22, and 24). The connections of the legs (20, 22, and 24) to their respective bases...
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4467218 |
Current-driven power generating apparatus
A current-driven power generating apparatus including a water wheel having a transversely extending axle on which are fixedly mounted a plurality of paddles. Also mounted on the axially outer ends...
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4443154 |
Windmill tower shadow eliminator
In a wind driven propeller system an airfoil support for the shaft of a propeller having an even number of blades extends above and below the shaft a distance at least equal to the blade length and...
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4435646 |
Wind turbine rotor control system
In a pitch control system for a wind turbine, a mechanical control system changes pitch angle of the rotor blades collectively in response to blade pitch moment. The control system is designed to...
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4432695 |
Wind motor
A wind motor is disclosed wherein mounted on a support structure is a shaft carrying a rotor comprising blades connected with the shaft and extending longitudinally relative thereto at an angle to...
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4426192 |
Method and apparatus for controlling windmill blade pitch
In order to control the turbine speed of a windmill employed for power generation, the pitch of the turbine blades is based on a dual-deadband control strategy. If the current turbine speed is...
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4406094 |
Apparatus for anchoring self-supporting, tall structures
This apparatus relates to anchoring self-supporting tall structures such as asts, towers or the like in a foundation. The structure (2) is supported in the foundation (5) at its lower end on a...
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4378198 |
Windmill
A wind-turbine having a horizontal shaft carrying the turbine blades, hinged in such a manner that a limited flapping movement is possible. The flap angle of the turbine blade is adjustable by...
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4375035 |
Tetrahedral windmill
A wind-adjustable air turbine consisting of: 1. a tetrahedral support structure, 2. at least one blade extending into opposite tetrahedral edges, and 3. an axis of rotation extending from the...
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4366386 |
Magnus air turbine system
A Magnus effect windmill for generating electrical power is disclosed. A large nacelle-hub mounted pivotally (in Azimuth) atop a support tower carries, in the example disclosed, three elongated...
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4358243 |
Multiple rotary wind power systems
A wind power system driven by multiple rotary devices strung on a cable.
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4353681 |
Wind turbine with yaw trimming
Yaw trimming in large wind turbines is achieved by laterally offsetting the turbine yaw axis from the axis of rotation of the hub.
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