| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 416010000 | Offset relative to flow direction | 19 |
| 20100054939 | METHOD AND APPARATUS FOR ADJUSTING A YAW ANGLE OF A WIND TURBINE - A method and an apparatus for adjusting a yaw angle of a wind turbine comprising a rotor having a plurality of rotor blades and a hub are provided. The method is adapted for adjusting the yaw angle from an actual yaw angle to a desired yaw angle and comprises the steps of measuring a wind direction at the location of the wind turbine, measuring the yaw angle of the wind turbine and/or determining a wind direction relative to the nacelle orientation, calculating a pitch angle of at least one rotor blade as a function of the measured wind direction and the measured yaw angle and/or the wind direction relative to the nacelle orientation, and adjusting the pitch angle of the rotor blades according to the calculated pitch angle such that a yaw momentum is generated for changing the yaw angle from the actual yaw angle to the desired yaw angle. | 03-04-2010 |
| 20100215492 | DRIVING FORCE GENERATING DEVICE - The invention relates to a driving force generating device including a column ( | 08-26-2010 |
| 20120114484 | Marine Wind Turbine Having a Pylon Vertically Adjusted by Setting - An off-shore wind turbine with a base supporting a pylon and a wind engine, the wind turbine being characterized in that the said base includes a tubular cavity, a bottom portion of said pylon being fixed in embedded manner inside said tubular cavity using a device that enables the angle of inclination of the axis (ZZ′) of the pylon to be adjusted relative to the axis (Z | 05-10-2012 |
| 20130170990 | POWER GENERATION APPARATUS - A power generation apparatus comprises a rotor rotatably mounted to a support and a plurality of vanes extending radially out from the rotor and positioned to be engaged by a moving fluid stream. Each vane includes a wing-shaped main blade having leading and trailing edges, and a co-extensive conditioner blade having leading and trailing edges. The conditioner blade is spaced parallel to the main blade so as to define therebetween a slot having an entrance and an exit. A lift-varying device boarders the slot to vary the lift produced by that vane inversely to the speed of the moving fluid stream so that the rotor turns at a relatively constant rate. The rotor, driven by wind or water, may be coupled to the armature of an induction motor/generator to produce electric power. | 07-04-2013 |
| 20140140846 | POWER GENERATION APPARATUS - A power generation apparatus comprises a rotor rotatably mounted to a support and a plurality of vanes extending radially out from the rotor and positioned to be engaged by a moving fluid stream. Each vane includes a wing-shaped main blade having leading and trailing edges, and a co-extensive conditioner blade having leading and trailing edges. The conditioner blade is spaced parallel to the main blade so as to define therebetween a slot having an entrance and an exit. A lift-varying device boarders the slot to vary the lift produced by that vane inversely to the speed of the moving fluid stream so that the rotor turns at a relatively constant rate. The rotor, driven by wind or water, may be coupled to the armature of an induction motor/generator to produce electric power. | 05-22-2014 |
| 20150078897 | Vertical-Axis Wind Power Generator Having Adjustable-Angle Rotating Blades - A vertical-axis wind power generator having adjustable-angle rotating blades is provided, which can maximize generation efficiency through angle adjustment of rotating blades for upper and lower support arms. The vertical-axis wind power generator having adjustable-angle rotating blades is configured such that a rotation angle range, in which forward-rotation wind power is applied to the rotating blades, can be maximized and a rotation angle range, in which reverse-rotation wind power is applied to the rotating blades, can be minimized through angle adjustment of the rotating blades so as to apply maximum forward-rotation wind power to the rotating blades and to apply minimum reverse-rotation wind power thereto, and through angle adjustment of the rotating blades so as to generate forward rotation even by reverse-rotation wind power in a partial angle range. | 03-19-2015 |
| 416011000 | Upstream pivotal mounting | 6 |
| 20110142627 | TEETER MECHANISM FOR A MULTIPLE-BLADED WIND TURBINE - A teeter mechanism for a multiple-bladed wind turbine includes a rotor shaft operable to rotate about a first axis. A spherical member is rotatable about the first axis along with the rotor shaft. A plurality of turbine blades is mounted to a rotor hub. The rotor hub rotationally drives the rotor shaft, and is operable to teeter about the spherical member such that the rotor hub rotates about the first axis in a first position and rotates about a second axis offset from the first axis in a second, teeter position. | 06-16-2011 |
| 20130011258 | Wind turbine with gale protection - A wind turbine includes a nacelle pivotally supported on top of a tower and having a tail rod, a rotator blade device mounted to the nacelle, a tail vane extended from the tail rod, two horizontal stabilizers mounted to the sides of the tail vane, a stable flap attached to the tail rod and located below one of the horizontal stabilizers, and a pivotal flap pivotally attached to the tail rod and located below the other horizontal stabilizer and pivotal relative to the tail vane to selectively engage with the horizontal stabilizer by a strong wind, and to generate a side force onto the tail vane, and to pivot the wind turbine and to deviate the wind turbine from a headwind and to prevent the wind turbine from being over-rotated or burned or damaged by the gale or strong wind. | 01-10-2013 |
| 20130094964 | Automatically adjusting wind energy paddlewheel - A device is described herein that harnesses wind energy by employing large rectangular airfoils mounted on a rotating frame. As the frame rotates, sliders cause the airfoils to expand and contract in a cyclical pattern. The aerodynamic drag of the airfoils is maximized during the power stroke and minimized during the recoil stroke. When subjected to wind, the wind causes more pressure on the expanded airfoils than the contracted ones, which drives rotation of the entire frame. The design is highly scalable, limited only by stiffness and strength limitations of the materials used in its construction. It may be possible to achieve efficiency of power generation that greatly surpasses that of traditional propeller style windmills. | 04-18-2013 |
| 20130302165 | TURBINE APPARATUS AND METHODS - Turbines and methods for their use, for generating power utilizing the flow of water or other fluids. In certain embodiments, turbines with helical blades oriented to efficiently intercept off axis or angular fluid flow, such as presented by whirlpool water flow patterns. In certain preferred embodiments, turbines having helical blades with major blade surfaces oriented to take advantage of whirlpool or circular-angle flow patterns, depending on geographic location of installation in the northern or southern hemisphere. In still other embodiments, turbines in which the pitch of rotor and/or helical blade surfaces is variable. | 11-14-2013 |
| 20140219799 | STATIONARY CO-AXIAL MULTI-ROTOR WIND TURBINE SUPPORTED BY CONTINUOUS CENTRAL DRIVESHAFT - Multiple horizontal axis type rotors are coaxially attached along the upper section of an elongate torque transmitting tower/driveshaft, The tower/driveshaft projects upward from a cantilevered bearing means, and is bent downwind, until the rotors become sufficiently aligned with the wind to rotate the entire tower/driveshaft, Power is drawn from the shaft at the base. Surface mount, subsurface mount, and marine installations, including a sailboat, are disclosed. Blade-to-blade lashing, and vertical axis rotor blades may also be included. Vertical and horizontal axis type rotor blades may be interconnected along the length of the tower/driveshaft to form a structural lattice, and the central shaft may even be eliminated. Aerodynamic lifting bodies or tails, buoyant lifting bodies, buoyant rotor blades, and methods of influencing the tilt of the rotors, can help elevate the structure. This wind turbine can have as few as one single moving part. | 08-07-2014 |
| 20150104312 | TRILLIUM WIND TURBINE - A trillium wind turbine can have a plurality of blades. Together, the swept-back, complexly-curved blades can be attached to an electricity-generating nacelle. Each blade has a main blade, and a trailing edge blade, and can optionally have a diversion blade. Wind is directed down the length of the blade and exits the tip. The main blade resembles a portion of a cylinder in form, the cylinder being twisted to change the angle of attack, thereby adding more lift throughout the length of the blade. The trailing edge and diversion blades are pitched relative to the wind and produce lift. Additionally, wind hitting the diversion blade is diverted behind the blade. Because the surface area and volume of the blade are larger near the base and smaller at the tip, the air traveling along the blade increases in velocity producing more thrust/lift. The turbine also automatically faces into the wind without the need for sensors or positioning motors. | 04-16-2015 |
| 416013000 | Horizontal deflection relative to flow-aligned vane | 7 |
| 20090208334 | Wind Flap Brake Assembly for Wind Turbine - A brake assembly for use with a wind turbine. The brake assembly comprises a movable wind flap for attachment to a tail assembly of the wind turbine, the wind flap being configured to assume a first closed position during normal operation, and a second open position when incoming winds exceed a predetermined velocity threshold. Provided on the wind flap is a trip rudder assembly for cooperating with incoming wind to urge the wind flap into the open position. A counterbalance assembly is also provided for biasing the wind flap into the closed position. The wind flap in the open position effects a redirection of a portion of the incoming wind, urging the wind turbine to assume an oblique position relative to the incoming wind, effecting a reduction in rotational velocity of the wind turbine. | 08-20-2009 |
| 20100196157 | Turbine Apparatus - The wind-driven turbine apparatus is an apparatus comprising: a horizontal axle, a support frame, said support frame comprising; bearings configured to support said horizontal axle; and a central bearing to permit said support frame to rotate about a vertical axis; a plurality of axial blades, spaced longitudinally along said horizontal axle, spaced radially around said horizontal axle and a tail attached to said support frame. | 08-05-2010 |
| 20110116926 | Self-Directing Vertical Axis Turbine For Harnessing Power - A self-directing vertical axis turbine includes a base, a primary hub rotatably coupled to the base for rotation about a first axis, primary support arms extending from the primary hub, a positioning arm rotatably coupled to the base for free rotation about the first axis, a secondary hub rotatably coupled to the positioning arm for rotation about a second axis that is spaced apart from and generally parallel to the first axis, secondary arms extending outwardly from the second hub, and capturing elements. Each capturing element is rotatably coupled to respective primary and secondary arms. The positioning arm and the primary hub are independently attached to the base to allow rotation about the base at different times and speeds. The positioning arm rotates based upon forces imparted by a fluid upon the capturing elements and transferred to the positioning arm by the secondary arms and the secondary hub. | 05-19-2011 |
| 20120189446 | Horizontal wind turbine with a vertical shaft - A horizontal wind turbine with a vertical shaft and wind driven vanes that hang vertically when there is no wind, engage and drive the turbine when traveling with the wind and rotate toward a horizontal position when traveling into the wind. | 07-26-2012 |
| 20120269627 | VERTICAL AXIS WINDMILL SYSTEM - A vertical axis windmill system. The system includes a plurality of horizontally disposed blades attached to a vertical shaft, a windshield and a wind-flow diverter that results in increased power output of the vertical axis windmill system. | 10-25-2012 |
| 20130034440 | HORIZONTALLY ORIENTED WIND TURBINE - A mill that reacts to fluid flow to create energy includes a vertically oriented hub, an arm attaching to and rotating with the hub in a horizontal plane, a plate attaching to the arm, a vane cooperating with the plate, the vane having a curved suction side and a planar pressure side, a leading edge and a trailing edge. | 02-07-2013 |
| 20140147274 | FLUID APPARATUS WITH PITCH ADJUSTABLE VANES - An apparatus comprising: a frame; a shaft mounted to the frame for rotation; plural vanes each mounted for rotation about a respective pitch adjustment axis on one or more respective arms extending from the shaft; a collar mounted to the frame coaxial with the shaft, the collar having a first outer circumferential surface defining a convex cam shape, and a second outer circumferential surface defining a non cam circular shape; and plural followers arranged to contact the first outer circumferential surface in a first configuration corresponding to a first speed of rotation of the shaft and the second outer circumferential surface in a second configuration corresponding to a second speed of rotation of the shaft, the second speed being higher than the first speed, the plural followers being each connected to adjust the pitch of a respective vane of the plural vanes. | 05-29-2014 |
