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416 - Fluid reaction surfaces (i.e., impellers)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
416132000 Sectional, staged or nonrigid working member 21
416134000 Nonmetallic resilient mounting 19
416140000 Including movement limit stop or damping means 17
416135000 Resilient bias or mount 11
416141000 Plural articulation 4
20100028150AIRFOILS WITH AUTOMATIC PITCH CONTROL - An airfoil arranged for use in a fluid flow of varying direction relative to the airfoil, has arranged thereon a plural axis hinge for automatic adjustment of the angle of pitch of the airfoil. The airfoil can be applied to a rotary crossflow device for use in a fluid flow of varying apparent flow direction, an oscillating device for use in a fluid flow, a force generation device for use in a fluid flow of varying direction, or a flow control device for use in a fluid flow of alternating direction.02-04-2010
20100047069Vertical windmill - This invention relates to improving the performance of the conventional vertical windmills. The following strategies are employed to accomplish the objectives: 02-25-2010
20130149151Multiple-Yoke Main Rotor Assembly - The present application includes a main rotor assembly for an aircraft. The rotor assembly has a main rotor mast configured for rotation about a mast axis and two yokes pivotally connected to the mast for rotation therewith about the mast axis. Each yoke is independently pivotable relative to the mast about at least one flap axis that is generally perpendicular to the mast axis. In at least one embodiment, a torque splitter connects the yokes and allows for limited rotation of the yokes relative to each other about the mast axis. Each yoke is configured for the attachment of rotor blades extending generally radially relative to the mast axis.06-13-2013
20130156580Constant-Velocity Drive System for Gimbaled Rotor Hubs - A constant-velocity drive system for a rotary-wing aircraft rotor comprising a differential torque-splitting mechanism and a gimbal mechanism is disclosed. A rotary-wing aircraft having a rotary-wing aircraft rotor comprising a differential torque-splitting mechanism and a gimbal mechanism is disclosed.06-20-2013
416133000 Axially displaceable rotary carrier (e.g., hub, etc.) 1
20090169382FLUID-DRIVEN POWER PLANT - A fluid-driven power plant for harnessing power from a fluid flowing in a preselected direction has a shaft mounted for rotation about a primary axis substantially perpendicular to the preselected direction and at least three blades attached to the shaft, each of the blades having a frame and at least one panel hingedly attached to the frame, with no more than two of the blades attached to the shaft at any particular axial position along the shaft. In specific embodiments, each of the at least three blades is attached to its frame at a location radially outwardly from the shaft for rotation about an axis substantially parallel to the primary axis. Two of the blades may be attached to the shaft at a first axial location along the shaft and two other blades may be attached to the shaft at a second axial location along the shaft.07-02-2009
416139000 Including weight bias means 1
20110189016DEVICE FOR ADJUSTING THE BLADE PITCH OF A WIND GENERATOR - The device is intended to adjust the pitch of blades or propellers which are articulately coupled by means of end supports inside radial bearings which are solidly joined to a rotating head-piece of a wind generator. This adjustment may be performed either actively or passively. It is characterised in that the rotating head-piece incorporates a linear actuator (08-04-2011
20100003137Fixed horizontal axis-mounted wind turbine blade with an independently rotating pressure cambered fin - A fixed horizontal axis-mounted wind turbine blade impelled by an independently rotating, pressure cambered fin includes a wind turbine blade comprised of a solid, rigid leading edge and trailing edges. The blade is triangular in shape, the base of the triangular blade is attached to a center, longitudinally fixed, horizontal, primary rotating axis and the point opposite the base is most distant from the horizontal rotating axis. The wind turbine blade base and length are aligned mutually perpendicular to the primary horizontal axis of rotation. A triangular fin is attached to the trailing edge of the blade end most distant from the base. The base of the attached fin is coincident to a secondary axis of rotation. The secondary axis of rotation allows the fin to rotate past either side of the plane of primary blade revolution in response to wind pressure.01-07-2010
20110194937PRELOADED BEARING FOR ROTOR BLADE - A rotor for a propulsive thrust device comprises a hub having a peripheral surface; a plurality of rotor blades received at the peripheral surface of the hub; a first bearing assembly located in the hub and around a shank of a respective rotor blade to support the rotor blade in the hub under centrifugal loading and to allow the rotor blade to rotate about a longitudinal axis; and a second bearing assembly located in the hub and around a shank of a respective rotor blade and inward of the first bearing assembly to preload the first bearing assembly. A preload bearing assembly comprises an outer race; a plurality of rolling elements located therein; and a plurality of studs located in communication with the outer race. Adjustment of the studs distributes a tensile load around the outer race to exert a preload force on a bearing assembly supporting the rotor blade.08-11-2011
20090191059WIND POWER PLANT BUKTUKOV-3 - A wind power plant comprising blades connected by a rods, which are fastened, to cantilevers set on a fixed axis with bearings. Each blade is connected to adjacent blades with a stem. The stem is connected to the blade at one end, the other end is connected to the rod of the adjacent blade. The rod of one blade is attached with weights. In different variations of the wind power plant the blades are fastened to the cantilevers, the internal and external edges of each blade at the butt ends are interconnected by a stem, wherein one end of the stem is connected to the rod near the external edge, while the other end is connected to the adjacent blade between the rod center and the internal edge thereof or to the adjacent blade between the center and the internal edge.07-30-2009
20090304508Self-adjusting wind turbine generator blade - A self-adjusting blade for wind turbine generator or windmill will change width of blades according to wind speed to optimize efficiency. The windmill comprises a brace, rib tubes, cylinders, cylinder holders, hose holders, non-movable shells, and movable shells. The movable shells and rib tubes are organized like extendable antennas of portable radios. The movable shells are moved and held by cylinders. There are sets of hose holder for hoses and wires for cylinders. A micro-controller controls cylinders to move the movable shells according wind speed.12-10-2009
20090035135Wind Generator - Comprising a tower (02-05-2009
20100266411Constant-Velocity Joint with Torque-Combining Differential - A constant-velocity drive system for an aircraft rotor has a gimbal mechanism and a differential torque-combining mechanism. The gimbal mechanism has gimbals driven in rotation by a rotor mast about a mast axis, the gimbals providing for gimballing relative to the mast about gimbal axes generally perpendicular to the mast axis. The differential torque-combining mechanism is connected to the gimbal mechanism and configured to be driven in rotation about the mast axis by the gimbal mechanism. The differential mechanism is capable of gimballing relative to the mast about the gimbal axes, the differential torque-combining mechanism having an output component attached to a yoke of the rotor for driving the yoke in rotation with the differential torque-combining mechanism.10-21-2010
20090185905RETURN AND LIMITED MOTION IN ENERGY CAPTURE DEVICES - The problems of return and continuous motion are common to a number of renewable energy machines, particularly in applications with wind and magnetism. Devices are presented for obtaining wind and other energy through the use of sails and other components with flexible structures on a rigid frame that require a return motion. Other devices presented enable the capture of linear energy, such as that of wind, with or without return motion, or at least minimizing such motion, with or without the use of blades.07-23-2009
20090169381ROTOR BLADE FOR A ROTOR AIRPLANE - A rotor blade comprises an inner rotor blade root area, a rotor blade main area disposed adjacent to the inner rotor blade root area along a length of the rotor blade and having an aerodynamically effective rotor blade profile, the profile including a nose area and a rear edge area, and a rotor blade tip disposed adjacent to the rotor blade main area along the length of the rotor blade. The rotor blade tip is configured to be deformable relative to the rotor blade main area and is operatively connected to a first actuator device. The first actuator device is configured to initiate a vertical movement of the rotor blade tip upwards or downwards relative to the lift direction. The vertical movement starts from a neutral position relative to the rotor blade main area.07-02-2009
20090185904SUBMERSIBLE PLANT - The present invention relates to a submersible plant for producing energy. The submersible plant comprises at least one turbine (07-23-2009
20130216382Hub Assembly with Centrifugal and Radial Bearings - A rotary system including a yoke having an opening forming a bridge for receiving a spoke extending therethrough. A rotor blade couples to the spoke and a pitch horn positioned outside the opening pitches the rotor blade during flight. A bearing assembly attaches the spoke and the pitch horn to the bridge and control blade forces exerted against the hub assembly during flight.08-22-2013
20100226775Mass produced composite wind turbine blades - A renewable energy system for directly charging electric and hybrid vehicles is shown for areas with moderate wind and/or solar resources. The wind turbine blades and rotor assemblies for capturing the wind resources show significant improvements in both cost of manufacture and site assembly compared to three-bladed horizontal axis turbines. A simple, easily manufactured blade pivoting mechanism is shown to improve the performance of vertical axis turbines. A related improvement for varying blade pitch along the axis of horizontal axis turbine blades allows for production using continuous mass-production methods rather than the labor and cost intensive current practice of molding the blades. The blade assemblies are completely scalable and can be easily customized for particular applications/sites.09-09-2010
20090136346Vertical axis wind turbine - A vertical axis wind turbine having a plurality of upright airfoils pivotally engaged. A continuous adjustment of the angle of attack of the airfoils to oncoming wind is provided by rotation of a control plate connected to the vanes which are mounted upon a rotating drive plate. A vane can be employed to rotate the control plate to affect the continuous adjustment of the airfoils.05-28-2009
20080213095Wind Turbine Pitch Bearing, and Use Hereof - The invention relates to a wind turbine including at least two pitch controlled wind turbine blades. Each blade has pitch bearings including two or more bearing rings, and pitch controlling means for pitching the blades by means of the bearings. The blades are mounted on a hubs via the pitch bearings and the pitch bearings include separate flexibility enhancing means for controlling loads in the bearings.09-04-2008
20090246024FAN AND IMPELLER THEREOF - A fan includes an impeller and a fan frame. The impeller is accommodated within the fan frame. The impeller has a hub and a plurality of blades disposed around the hub. The hub has a top portion and a side wall connected with the top portion. The hub further has a plurality of flexible portions disposed and located on the side wall. The blades are connected with the flexible portions, respectively, so that the blades are connected to the hub.10-01-2009
20090191058TORSION BLADE PIVOT WINDMILL - A pair of airfoil blades having a longitudinal axis coincident with one another. Each blade is bent at the center on the plane of the chord. Each blade has an airfoil tip blade placed at the outer most trailing edge. The blades are affixed by their root ends to opposite ends of a torsion shaft. The blade chords are offset from one another, which defines a blade pitch angle. The torsion shaft is journaled perpendicular through a driveshaft, whereas the rotation of the blades can transfer through the torsion shaft to the driveshaft and cause the driveshaft to turn, eliminating the need for a hub. The blades are adapted to pivot along with the torsion shaft. The blades lie in substantially the same plane, and are adapted for rotation in a plane orthogonal to the longitudinal axis of the driveshaft. Each blade has an airfoil shaped fluid gate valve disposed on the leading edge.07-30-2009
20120148408ROTOR COUPLING - A rotor coupling (06-14-2012
20090175724Bearing unit for a long rotor blade of a wind power installation, wind power installation comprising one such rotor blade bearing arrangement, and method for operating one such wind power installation - The invention relates to a bearing unit for a long rotor blade, especially a wind power installation, said bearing unit comprising two annular elements that can be rotated in relation to each other and are directly or indirectly connected to the rotor blade hub and to the rotor blade, and at least two running tracks that can be axially staggered in relation to each other and comprise peripheral rolling bodies with an approximately cylindrical shape, i.e. each comprising a lateral surface that is rotationally symmetrical to a rotational axis in a very precise manner. The aim of the invention is to be able to fully absorb the tipping moment caused by the wind pressure on the rotor blade and on the bearing unit, and optionally to absorb other forces and other moments. To this end, two running tracks are arranged between the two connection elements, are axially staggered in relation to each other, and comprise rolling bodies with an approximately cylindrical shape, said rolling bodies being oriented in such a way that the rotational axes thereof intersect the longitudinal axis of the rotor blade in question at an angle of between 30° and 90°. The invention also rates to a wind power installation provided with one such rotor blade bearing arrangement, and to a method for operating one such wind power installation. The at least one rotor blade in question is continuously rotted about the longitudinal axis thereof during the option of the wind power installation.07-09-2009
20110064578WIND TURBINE WITH HIGH SOLIDITY ROTOR - A wind turbine includes a nacelle support structure rotationally mounted to a tower through a yaw bearing for rotation about a yaw axis. A hollow shaft is rotationally mounted to the nacelle support structure through a rotor bearing for rotation about a rotor axis of rotation and a blade support body is mounted to the hollow shaft, the blade support body supports either of a two-bladed rotor system and a three-bladed rotor system, the two-bladed rotor system and the three-bladed rotor system have essentially equal solidity.03-17-2011
20120207602MODULAR INTEGRATED DEVICE FOR ROTOR BLADE CONTROL - A rotor blade assembly includes a rotor blade including one or more pockets and a housing located on the rotor blade within one or more pockets. The housing is secured to the rotor blade via one or more dovetail joints. A drive mechanism for a control surface of a rotor blade includes an actuator and a rocker operably connected to the actuator. At least one hinge rod is operably connected to the rocker and operably connected to a control surface at a control surface pivot. The drive mechanism translates substantially linear motion of the actuator into rotational motion of the control surface about the control surface pivot.08-16-2012
20100135804WIND-POWERED GENERATOR - A generator with arms forming the shape of a star and with each of them having an articulated blade capable of being fixed to the arm and being fastened temporarily to it by means of a voidable retaining element, which is moveable between a retaining position and a released position of the corresponding blade.06-03-2010
20120070288ROTOR BLADE WITH INTEGRATED PASSIVE SURFACE FLAP - A rotor blade for a driven horizontal rotor of a rotary-wing aircraft comprises an elongated main body which includes a leading edge, a trailing edge, and an upper surface extending between the leading edge and the trailing edge. The rotor blade further comprises at least one flap having a front end and a rear end and mounted to the main body at its front end swiveling about a swiveling axis running in parallel to the radial or spanwise axis of the rotor blade. The flap has a basic position in which it lies flat against the upper surface of the main body. Further, the flap is passively swiveled by aerodynamic forces and inertial forces about its swivel axis to raise above the upper surface of the main body, and a reset force acts upon the flap to reset it into its basic position on the surface of the main body.03-22-2012
20100209250OPPOSED TILTING BLADE, VERTICAL AXIS WIND TURBINE POWER GENERATOR - Improvements in A wind generator, that may also be called and relates to, windmill, turbine or aero generator, on a vertical axis. The vertical axis gives the windmill the ability to be turned by air, or liquid if inverted, from any direction parallel to the earth's surface. Multiple blades rotate through a horizontal axis into the wind to lessen air resistance on one side while turning vertically on the other side to gain energy from the wind. The system is counter-weighted as needed, to reduce energy loss, by different methods including but not limited to gears, levers, pneumatics, cables, hydraulics or added counter-weight. The electrical generating machinery is below the blades or at the bottom of the vertical drive shaft.08-19-2010
20120134823Wind Turbine - A wind turbine having a plurality of airfoils disposed on the end of spokes which extend from a hub connected to a drive shaft. The airfoils are preferably disposed on an angle of about 40 to about 50 degrees with respect to the plane of rotation of the hub.05-31-2012
20120257971WindJet .RTM. Turbine Ring - A series of rings in varying diameters, divided by sets of formed fins arranged in an offset pattern. The offset pattern was inspired by a non-wind apparatus namely a conventional hand cheese grater. Such a pattern has proven to create superior lift, torque, and thus rotation when applied to the Windjet® Turbine Ring. The WindJet® Turbine Ring experiences high revolutions which power hydraulic motors that transfer power into an electrical generation system found at the base of the tower.10-11-2012
20090016882Apparatus for Capturing Kinetic Energy - An apparatus for capturing kinetic energy from wind and water current speeds is disclosed for use in both commercial and residential applications generally comprising a vertical axis spindle, a plurality of structural arms attached to said spindle, and a plurality of panels rotationally attached to the ends of their respective structural arms to provide for controlled flipping action, thereby enabling operation in diverse intensity wind and water currents. In further embodiments, the apparatus may comprise mechanical, pneumatic or hydraulic mechanisms for dampening the contact points between the panels and the hinge assemblies as the panels reach their open positions at the certain angle to their respective structural arms, and between the panels and their respective structural arms as the panels rotate to their folded position parallel to the structural arms.01-15-2009
20120099990TORQUE PIN FOR ADJUSTING POSITION OF BLADE RING RELATIVE TO ROTOR IN A GAS TURBINE ENGINE - A method is provided for adjusting a position of a blade ring relative to a rotor in a gas turbine engine. An outer casing surrounds the blade ring and the blade ring surrounds the rotor. The method comprises: determining an amount of vertical movement needed to reposition the blade ring relative to the rotor so that the blade ring is at a desired position relative to the rotor; providing at least one torque pin assembly comprising a torque pin and a variable thickness defining structure; determining a change in the thickness of the variable thickness defining structure so as to effect the necessary vertical movement of the blade ring; changing the thickness of the variable thickness defining structure; and coupling the at least one torque pin assembly to the outer casing such that at least one torque pin engages the blade ring.04-26-2012