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8172529 |
Method of operation of a high-efficiency turbine with variable attack angle foils
Operations of a turbine to generate energy from a relatively slow fluid flow, such as wind and water, are described. The turbine has a plurality of foils rotating about a central axis at a...
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8164213 |
Orbital track wind turbine
An orbital track wind turbine for generation of electrical energy from wind power is provided. The wind turbine includes a plurality of spaced vertical supports to which at least two parallel...
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8137065 |
Aerogenerator having means for maintaining vane unit horizontal
Disclosed herein is an aerogenerator having a horizontal maintaining means. The aerogenerator of the present invention includes a support pillar which is placed upright on the ground and has a...
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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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8100647 |
Method for operating a wind turbine, a wind turbine and use of the method
A method for operating a wind turbine having a rotor with a number of wind turbine blades, wherein the rotor's axis of rotation is tilted in relation to the direction of the incoming wind, includes...
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8021111 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Method for operating a wind turbine, a wind turbine and use of the method
A method for operating a wind turbine having a rotor with a number of wind turbine blades, wherein the rotor's axis of rotation is tilted in relation to the direction of the incoming wind, includes...
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8016544 |
Vertical windmill
The vertical windmill includes a rotatable wind wheel column mounted to a base. The column includes a plurality of hollow wheel hubs stacked vertically atop each other. Each wheel hub includes a...
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7993096 |
Wind turbine with adjustable airfoils
The present invention concerns a wind turbine having a plurality of vertically extending airfoils forming a rotating carousel rotating about a central axis thereof. The airfoils pivot about their...
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7918646 |
High efficiency turbine with variable attack angle foils
A high-efficiency turbine generates energy from a fluid flow, such as wind or water currents. The turbine has a central axis with a plurality of foils rotatable about the central axis in a general...
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7862290 |
Fluid energy-harnessing apparatus
Apparatus for harnessing energy from wind comprises upper and lower continuous-loop trackways defining a continuous loop path and a series of connected, movable wind foils. Each wind foil has a...
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7766601 |
Vertical-axis wind turbine
A vertical-axis wind turbine which has a central rotary tower upon which are fixed substantially vertical blades. The blades are capable of rotating and moving radially relative to the central...
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7550862 |
Wind turbine and method for the automatic correction of wind vane settings
The invention relates to a wind turbine comprising a machine housing (12) equipped with a rotor (14), which is mounted to pivot on a sub-structure (10). Wind parameters and an electromechanical...
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7413404 |
Sail wing type windmill
A sail wing type windmill includes an output shaft erected vertically, a foundation with a bearing disposed in the center hole provided therein for supporting the output shaft; an axle body with a...
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7288850 |
System and apparatus for emergency backup power generation
An emergency backup power generation system includes a housing comprising a main body portion, a top cap, and a bottom cap. Inner and outer surfaces and the main body portion, the top cap, and the...
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7258527 |
Vertical axis wind engine
The present invention is to provide a vertical axis wind engine comprising at least one arm each having its center rotatably coupled to a vertical axis mounted on a base on the ground, each pair of...
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7245039 |
Apparatus and method for generating hydrogen gas through the use of wind power
This invention teaches an apparatus, method, means, and computer readable media to address the problem of the inconsistent, unreliable nature of wind, and in particular low-wind speeds, through...
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7126235 |
Wind power electric device and method
A wind-power unit has a wind turbine has an electric generator connected to the wind turbine. The stator of the generator has a winding formed of a high-voltage cable having a core of conducting...
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7118341 |
Self adjusting sail vertical shaft windmill
A vertical shaft is provided and supported whereupon are mounted sails that can so self adjust as to interact with the wind in such a way as to power a windmill as well as relieve themselves from...
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6992402 |
Wind-driven power station
The wind-driven power station comprises a closed-loop rail track consisting of sections of gradual ascent and descent. The descent section directed upwind is positioned in an artificial tunnel....
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6926491 |
Vertical axis wind turbine with controlled gybing
A device for generating electricity in which wind blowing from any direction causes the rotation of sails around a vertical tower. As the sails rotate the sails moving toward the wind are...
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6840738 |
Feathering turbine apparatus
A feathering fluid-driven turbine comprises impellers, arranged around the turbine axis and affixed to axles disposed parallel to the axis of rotation of the turbine, and further comprises a vane,...
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6672522 |
Wind power generating system
Disclosed is a wind power generating system. The system comprises moving bodies connected one with another by connectors and repeatedly circulated on a rail of an endless track; sail devices...
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6543999 |
Windmill
A windmill is provided wherein the windmill comprises a central rotating shaft with an upper and a lower end opposite thereto. A blade arm is provided with an inward and an outward end opposite...
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6379115 |
Windmill and windmill control method
A windmill includes a freely rotatable revolution shaft, a plurality of pairs of pivotal support rods provided at the revolution shaft, and wind receiving blades respectively and rotatably set...
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6179563 |
Wind-powered drive shaft
A wind-powered drive shaft, the rotary force of which can be used for a variety of purposes, such as to drive a hydraulic pump, the crankshaft for a water pump, or an electrical generator. To a...
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6158953 |
Wind turbine with variable position blades
A wind turbine has an internal rotor carrying a plurality of turbine vanes in a circular path between an inlet opening and an exhaust opening. The inlet opening includes a stationary dividing vane...
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6000907 |
Fluid-activatable vane for a fluid turbine
A fluid-activatable vane is defined by a thin vane body having opposed narrow leading and trailing side edges and opposed substantially smooth large top and bottom surfaces. The body has a central...
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5864183 |
Method and apparatus for optimizing performance of a pump-turbine
A technique is disclosed for optimizing performance of a pump-turbine unit while operating normally in the pumping mode by identifying gate positions resulting in optimization of certain parameters...
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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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5844323 |
Rotatable wheel for developing fluid kinetic energy by accepting action forces from multiple directions
In the rotatable wheel having several radiate skeletons, some auxiliary axles are mounted on each radiate skeleton and provided at the lateral of a limb of the radiate skeleton to the direction...
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5676524 |
Vertical-axis wind turbine
A turbine has an upright shaft defining and rotatable about a vertical main axis, a support plate fixed to the shaft, a plurality of upright vanes pivotal on the support plate about respective vane...
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5324169 |
Oscillating, lateral thrust power generator
An apparatus for power production from low velocity fluid flow includes a lateral support arm assembly extending from a vertical drive shaft. A power blade is pivotally secured to the distal end of...
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5302084 |
Windmill with annular flywheel
An improved windmill has an approximately vertical center support post. The windmill also has a plurality of wheels, each rotatably mounted on a separate horizontal axis, each axis being radially...
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5195871 |
Self-restored windmill
A windmill includes a plurality of fan blade units pivotally mounted in a central vertical transmission shaft each unit having a right-leaf vertical fan blade and a left-leaf horizontal fan blade...
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5193978 |
Articulated blade with automatic pitch and camber control
An articulated blade whose forward vane section is directly pitched by relative fluid flow upon it, and whose rear deflector section deflects the flow upon it. A control arm, through parallelogram...
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4979871 |
Wind turbine
An improved vertical axis wind turbine is disclosed. The wind turbine in accordance with one embodiment, does not include a support tower but instead includes a bearing support for mounting a...
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4832569 |
Governed vane wind turbine
Wind energy converting machine comprising a solid rotating ring carrying airfoils which are governed to have an optimal angle of attack to the wind approaching each of them when the wind velocity...
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4776762 |
Windmill
A power conversion turbine for actuation by fluid in motion such as, for example the wind, with a body supported to rotate about a central axis and carrying a plurality of vanes spaced from said...
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4764090 |
Vertical wind turbine
A cross wind axis type wind turbine includes four wind driven airfoil blades pivotally connected between upper and lower sets of support spokes supported on a rotating vertical column so that the...
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4707617 |
Windmill apparatus
A windmill apparatus includes: a frame body structure adapted to be positioned on a flat top of a construction; a main shaft vertically installed in the middle of the frame body structure; a first...
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4618312 |
Wind operated apparatus
A frame supported for rotation about a central vertical axis has an enclosing cylindrical side wall with a plurality of openings formed therethrough at spaced apart angular position around the...
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4609827 |
Synchro-vane vertical axis wind powered generator
A vertical axis wind powered generator apparatus has airfoil shaped vanes, a positive and synchronous vane orientation system which is controlled by a mechanism located exterior to its rotor, two...
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4555218 |
Turbo machine of the rotodynamic type
In a rotodynamic cross flow machine at least one vane (4) is positionably fixed in the rotor (40') so as to be able to pivot about two axes which are at least approximately perpendicular one to...
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4546264 |
Relating cellular energy generating and storage device
A rotating cellular energy generating device for generating electrical power for extended periods of time. The generating device characterized by having an annular rotating housing having a...
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4507049 |
Wheel intended to work with a fluid
A wheel intended to work with a fluid includes wing-shaped components (2) arranged around a central shaft (1) generally perpendicular to the direction of relative movement of the fluid (5). The...
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4494007 |
Wind machine
To generate power from wind economically, a feathering vane is pivotally mounted perpendicular to a tail vane and shifts the orientation of a sprocket assembly controlled by the tail vane in...
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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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4455491 |
Wind driven device and method of recovering wind energy
A wind driven device for driving an electrical generator to produce electricity having a base, an anchor pole stationarily affixed to the base, and a drive assembly support rotatably mounted around...
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4441858 |
Variable camber fluid power machine
This invention relates to a device converting the kinetic energy belonging to the moving stream of the fluid such as the wind, river and gulf streams to the power capable of doing a useful work in...
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4419587 |
Output power modulated wind responsive apparatus
A wind responsive power generating apparatus (20) comprises a pair of normally mutually orthagonal cross arms (22,24) carrying impeller members (22a,22b, 24a,24b) that apply torque to a load (38)...
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