Shiftable Support Patents (Class 416/121)
  • Patent number: 11746592
    Abstract: A solar powered smart window includes a light diffuser configured to convert an incident direct solar radiation to a diffusive light toward interior direction, a light diffuser positioner, a driving mechanism, a solar panel, and a control unit. The control unit moved the light diffuser from a predetermined opened position to a closed position and to hold the light diffuser at the closed position with latch mechanism, when the output power of the solar panel exceeds a threshold for over a duration time. The controller releases the latch mechanism and to cause the light diffuser to return to the predetermined opened position when the output power lowers below threshold for over the duration time. A method includes storing a predetermined condition, monitoring the output power, comparing the output power with the predetermined conditions, making decision whether a positional transition is necessary, and causing the transitional transition or maintaining current position.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: September 5, 2023
    Assignee: Imam Abdulrahman Bin Faisal University
    Inventor: Khalid Asker Alshaibani
  • Patent number: 11279477
    Abstract: An exemplary anti-torque system for a helicopter includes two or more electric fans rotatably mounted on a tail boom, the two or more electric fans rotatable about a longitudinal axis of the tail boom.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 22, 2022
    Assignee: Textron Innovations Inc.
    Inventors: Aaron Alexander Acee, Andrew Paul Haldeman
  • Patent number: 11021233
    Abstract: An actuator rod assembly for a blade pitch control system is provided herein. The actuator rod assembly includes a tubular outer rod and an inner rod. The outer rod has a first end and a second end. The inner rod has a first end and a second end and extends through the tubular outer rod. The inner rod is tensioned against the tubular outer rod so as to place the outer rod in compression.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: June 1, 2021
    Inventors: Suat Bekircan, Paul Brewer, Reg Raval
  • Patent number: 10946956
    Abstract: An unmanned aerial system includes an elongated fuselage having first and second rotational degrees of freedom. A forward propulsion assembly is disposed at the forward end of the fuselage. The forward propulsion assembly includes a forward rotor hub assembly rotatably coupled to the fuselage and reversibly tiltable about a first gimballing axis to provide a first moment on the fuselage in the first rotational degree of freedom. An aft propulsion assembly is disposed at the aft end of the fuselage. The aft propulsion assembly includes an aft rotor hub assembly rotatably coupled to the fuselage and reversibly tiltable about a second gimballing axis to provide a second moment on the fuselage in the second rotational degree of freedom. The first gimballing axis is out of phase with the second gimballing axis to control the orientation of the fuselage.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: March 16, 2021
    Assignee: Textron Innovations Inc.
    Inventor: Kip Gregory Campbell
  • Patent number: 10844835
    Abstract: A perpendicular axis turbine having at least two blades, wherein the blades are longitudinally offset with respect to one another, reducing the effects of blade-vortex interaction and providing increased power generation. In one embodiment, the blades are longitudinally offset such that the attachment point of one blade is halfway between the attachment points for the other blade.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: November 24, 2020
    Assignee: National Research Council of Canada
    Inventors: Amin Fereidooni, Doma Seleman Hilewit, Edgar A. Matida, Fred Nitzsche
  • Patent number: 10814991
    Abstract: Embodiments of a propulsion system are provided herein. In some embodiments, a propulsion system for an aircraft may include an electrical power supply; a motor coupled to the electrical power supply, wherein the electrical power supply provides power to the motor; and a fan disposed proximate a rear portion of an aircraft and rotatably coupled to the motor, wherein the fan is driven by the motor.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: October 27, 2020
    Inventors: Manoj Ramprasad Shah, Narendra Digamber Joshi
  • Patent number: 10787253
    Abstract: The present invention includes an anti-torque assembly for a helicopter comprising a plurality of fixed blade pitch motors mounted on one or more pivots on the tail boom of the helicopter, wherein the plurality of fixed blade pitch motors on the one or more pivots are adapted to be oriented substantially in-plane with a tail boom of a helicopter during a first mode of operation that comprises a hover mode and wherein the fixed blade pitch motors are adapted to be oriented substantially off-plane from the tail boom of the helicopter during a second mode of helicopter operation that is different from the first mode.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: September 29, 2020
    Inventors: Thomas Dewey Parsons, Carlos Alexander Fenny, Erik John Oltheten
  • Patent number: 10641095
    Abstract: Some embodiments include a mounting system for mounting the device in a fluid, an axle fixed to the mounting system, a solid walled hollow body that rotates about the axle having axial symmetry about a longitudinal axis. The solid walled hollow body may be substantially rounded at the front, expanding to a maximum diameter less than half the distance from the front end to the back end, and tapering radially along the longitudinal axis to the back end. The energy device may further comprise a plurality of blades on the exterior of the hollow body, each blade extending from the front end of the solid walled hollow body to the back end, rising to a maximum height, and having concave and convex walls.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: May 5, 2020
    Inventor: Christopher J Castro, Sr.
  • Patent number: 10626850
    Abstract: A load carrying structure (3) for a multirotor wind turbine (1) is disclosed. The load carrying structure (3) comprises a first load carrying arrangement (4) and a second load carrying arrangement (4), and each load carrying arrangement (4) comprises a primary structure (9) and at least two secondary structures (10), the secondary structures (10) extending on opposing sides of the primary structure (9) between an energy generating unit (5) carried by the load carrying arrangement (4) and an attachment point at a tower structure (2). Gravity acting on the energy generating units (5) causes push in the primary structures (9) and pull in the secondary structures (10), thereby causing preload of the secondary structures (10). The load carrying structure (3) is capable of handling thrust loads.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: April 21, 2020
    Assignee: Vestas Wind Systems A/S
    Inventors: Jesper Lykkegaard Neubauer, Torben Ladegaard Baun, Ivar J. b. k. Jensen
  • Patent number: 10071800
    Abstract: The device is capable of transporting people and goods from one location to another: it includes a circular shaped body, a uniquely designed propeller mounted on the top of the body with propeller blades that produce a low pressure region above the device, the difference between the air pressure on the bottom and the top of the device's body provides the uplift force for holding the device in the air, capable of vertical takeoff and landing; on the surrounding wall, sideways and in back, service propellers are mounted in horizontal direction to help navigate the device; land and sea landing version of the device is disclosed as well; its bottom is extended in order to keep the doors above the water level during floating.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: September 11, 2018
    Inventor: Jedidya L. Boros
  • Patent number: 9970306
    Abstract: A turbomachine, comprising a housing, at least two blade wheels rotatably accommodated by the housing, at least two rotatably arranged blades, which are evenly distributed along a circle of the at least two blade wheels and mounted with an axle parallel to the axis of the corresponding blade wheel. According to the invention, each blade axle is connected to an adjusting element, which can be displaced relative to the shaft of the second blade wheel via a four bar link, which lies in a plane perpendicular to the blade axle and consists mainly of a square arm that is fixed to the axle of the blades, wherein a square arm is articulated to the bottom of the blade wheel, whereas the other end is connected to the end of the first square arm via a connecting axle.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: May 15, 2018
    Inventor: Piergiorgio Pasetto
  • Publication number: 20140308130
    Abstract: A turbomachine, comprising a housing, at least two blade wheels rotatably accommodated by the housing, at least two rotatably arranged blades, which are evenly distributed along a circle of the at least two blade wheels and mounted with an axle parallel to the axis of the corresponding blade wheel. According to the invention, each blade axle is connected to an adjusting element, which can be displaced relative to the shaft of the second blade wheel via a four bar link, which lies in a plane perpendicular to the blade axle and consists mainly of a square arm that is fixed to the axle of the blades, wherein a square arm is articulated to the bottom of the blade wheel, whereas the other end is connected to the end of the first square arm via a connecting axle.
    Type: Application
    Filed: November 20, 2012
    Publication date: October 16, 2014
    Inventors: Piergiorgio PASETTO, Carlo BARONI
  • Publication number: 20140271182
    Abstract: A rotor assembly includes a yoke operably associated with a rotor blade. The yoke includes a first device and a second device that attach the rotor blade to the yoke. The first device is configured to allow transverse movement of the rotor blade about a chord axis and rotational movement about a pitch-change axis. The second device is configured to allow rotational movement of the rotor blade solely about the pitch-change axis. The method includes rotating rotor assembly about a first plane of rotation, while retaining a relatively stiff out-of-plane rotation and a relatively soft in-plane rotation during flight.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Ken Shundo, Mithat Yuce, Frank B. Stamps
  • Patent number: 7540706
    Abstract: A wind harnessing system comprises a substantially helical structure including at least a portion of a spiraling groove and at least one energy converter positioned at least partially within the portion of the spiraling groove. In other embodiments, wind grooves formed by adjacent bands which are fixed with respect to one another, carry energy converters which are moveable with respect to these fixed bands.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: June 2, 2009
    Assignee: Cleveland State University
    Inventor: Majid Rashidi
  • Publication number: 20080170941
    Abstract: A wind turbine is disclosed. The wind turbine comprises a casing with an inlet and outlet; a rotating shaft positioned within said casing wherein said rotational shaft provides rotational power to a generator; a plurality of impeller blades and guide vane blades arranged in at least one set within an interior of said casing, wherein said set comprises: a plurality of guide vane blades wherein each guide vane blade is affixed to an interior surface of said casing and to a stationary hub surrounding said rotating shaft, wherein a bearing is positioned within said stationary hub and rotationally engages an outer surface of said rotating shaft; and, a plurality of impeller blades affixed to a rotating hub, wherein said rotating hub is affixed to said rotating shaft and rotatable therewith, and wherein said plurality of impeller blades are rotatable within said casing; and, a support engaged with said casing.
    Type: Application
    Filed: July 31, 2007
    Publication date: July 17, 2008
    Inventors: Dwipen N. Ghosh, Sudip Ghosh
  • Patent number: 7131812
    Abstract: A sky turbine, having impeller blades with a plurality of panels that can telescope inward and outward. The pitch of the panels can be adjusted, and the pitch of each panel on a blade, passing from the innermost panel to the outermost panel, differs from the pitch of the previous panel by a certain adjustable amount. The sky turbine is preferably mounted above a city at a sufficiently high elevation that air current will be generally faster than just above the ground. In the preferred embodiments, a wing with two pods is pivotally mounted on a tower. Each pod has front and rear shafts, from which four blades extend. Servomotors cause the wing to turn so that its center of symmetry is parallel to the direction the sky is moving, cause the pitch of the panels of the blades to change, and cause the panels of the blades to telescope.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: November 7, 2006
    Inventor: Manfred Karl Brueckner
  • Patent number: 7059826
    Abstract: A multi-directional air circulation device for use in a living space. The multi-directional air circulation device comprises a first housing having i) a first wall portion defining a first interior space, ii) a first air outlet, and iii) a first air directing grill adjacent to the first air outlet. At least a second housing rotatable with respect to the first housing. The second housing having i) a second a wall portion defining a second interior space, ii) a second air outlet and, and iii) a second air directing grill adjacent to the second air outlet. At least one air generator is placed in the housings and used to generate at least one air stream which is then discharged from said device as at least two independently directed air exhaust streams through the first and second air outlets into said living space.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: June 13, 2006
    Assignee: Lasko Holdings, Inc.
    Inventor: William E. Lasko
  • Patent number: 5440176
    Abstract: An hydroelectric power plant is disclosed which comprises several combination turbine/generators which are suspended into an ocean current from a submerged tension leg type platform. Each of the turbine/generators are independently positionable horizontally, vertically and azimuthally to take the best advantage of the ocean current at any given time for generating electricity.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: August 8, 1995
    Inventor: Michael L. Haining
  • Patent number: 4830570
    Abstract: The present invention relates to a combination of two vertical axis Savonius-type rotors (20,120) mounted on a support structure (210) and a deflector plate (200). The deflector plate serves an an augmentation apparatus which considerably increases the power output of both Savonius-type-rotors and also improves their self-starting ability and smoothness of operation. The support structure is mounted for rotation about a central vertical shaft (242) so that the rotor-deflector combination can be properly positioned. The invention also provides a partition plate (236) positioned between the rotors to give rigidity to the deflector plate.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: May 16, 1989
    Inventor: Alvin H. Benesh
  • Patent number: 4786235
    Abstract: A wind-engine of the type consisting of several wind devices rotatably mounted at several independent stages, which comprises the combination of vertical props (1) disposed within a circle (4); at each stage (2), crossbeams (5) connected, on one hand, to the vertical props (1) and meeting, on the other hand, at the center of the said circle (4); a vertical axis (7) situated at the center of the said circle (4) and, at each stage, a wind device rotatably mounted about the said vertical axis.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: November 22, 1988
    Assignee: Gemaro A.G.
    Inventor: Germaine Van der Veken
  • Patent number: 4781522
    Abstract: Turbomill apparatus and method allowing power generation at low velocities of ambient medium, with an anti-stall characteristic of continually rising power output with rising speed at input medium at the same time being rugged to withstand high velocity ambient medium wherein a main rotor receives an input from an ambient medium travelling at a low velocity, a secondary rotor is impacted at least by the ambient medium for the purposes of rotating a tertiary rotor disposed in traveling relationship with regard to the main rotor, the tertiary rotor serving to exhaust the space proximate the output of the main rotor, thereby lowering the pressure at the output of the main rotor, whereby the main rotor can achieve start-up and maintenance of rotation at velocities of the ambient medium which, absent the apparatus of the invention, would be insufficient to cause start-up and continuance of rotation of the main rotor.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: November 1, 1988
    Inventor: Norman E. Wolfram
  • Patent number: 4710100
    Abstract: 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 pair of rotor units. The second bearing is supported by guy wires and the rotor units can pivot about the stud axis. The wind machine is used to drive a pump and a plurality of wind machines can drive pumps in series or in parallel.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: December 1, 1987
    Inventors: Oliver Laing, Johannes L. N. Laing
  • Patent number: 4606697
    Abstract: A wind-powered prime mover comprising a pair of elongate, vertically extending, laterally spaced parallel rotors with a plurality of circumferentially spaced radially outwardly projecting circumferentially and longitudinally extending vanes. The rotors are arranged so that the vanes of each rotor projects between adjacent pairs of vanes of the other rotor as the rotors rotate. The rotors are rotatably supported atop a turn-table which turns to dispose the lateral plane on which the axes of the rotors occur at right angle to prevailing wind. Wind directing shrouds are engaged about the lateral outside halves of the rotors and function to direct wind from said outer halves of the rotors laterally inward toward and between the lateral inner halves of the rotors. The windward sides of the shrouds define a wind gate through which wind moves into engagement with the rotors and are pivotally movable to increase and decrease the lateral extent of the wind gate to throttle the wind, as desired.
    Type: Grant
    Filed: August 15, 1984
    Date of Patent: August 19, 1986
    Assignee: Advance Energy Conversion Corporation
    Inventor: Gerhard H. Appel
  • Patent number: 4385871
    Abstract: An improved pump for lifting water from an underground source utilizes a wind motor for driving an oil-less air compressor eliminating oil contamination of ground water which is forced to the surface. The wind motor is movable to face the wind by means of a novel swivel assembly which also eliminates the formation and freezing of condensate within the airline from the compressor. The propeller blades of the wind motor and the tail section are formed from a pair of opposed convex air foil shaped surfaces which provide the propeller blades and the tail section with fast sensitivity to slight changes in wind direction and speed. A novel well tower for supporting the wind motor and compressor and for lifting the water from the underground source is an optional modification which requires no welding and eliminates the problem of condensate freezing in the airline going to the well.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: May 31, 1983
    Inventor: Victor A. Beisel
  • Patent number: 4381901
    Abstract: A marine propeller system comprising three individual elements, two of which are propellers mounted on a common shaft driven by a prime mover and the third being a cylindrical tube surrounding and movable relative to the two propellers, the tube having its interior surface in the form of a pair of equal and opposing truncated cones meeting midway of the ends of the tube. The rearward propeller is conventionally keyed to the driven shaft and fast thereon and the forward propeller is axially movable on the shaft and is arranged to be driven by the rearward propeller whereby, depending upon hydraulic pressures within the cylinder, the forward or driven propeller is shiftable relative to the rearward or driving propeller to maintain a spiral discharge from the cylinder with annular wake influence lines and substantially free of cavitation regardless of vessel load or speed.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: May 3, 1983
    Inventor: Russell G. Labudde
  • Patent number: 4368007
    Abstract: A fluid driven turbine includes a central rotor having a plurality of wind blades mounted circumferentially around the axis of the rotor and arranged to define a general spiral configuration extending along the axis of the rotor in a predominant fluid flow direction. The hub is spherically shaped to force the fluid outward with an increase in velocity into engagement with the blades.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: January 11, 1983
    Inventor: Walter K. Ely
  • Patent number: 4358243
    Abstract: A wind power system driven by multiple rotary devices strung on a cable.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: November 9, 1982
    Inventor: Oran M. Heath
  • Patent number: 4288199
    Abstract: Yaw track means for fluid impact impellers of a Toroidal Accelerator Rotor Platform (TARP) providing for revolution or yaw motion about a vertical centroidal TARP axis to a plurality of interconnected impact impellers supported and guided on said track means within the TARP's peripheral fluid flow augmentor channel. Said impact impellers, which may provide shaft output to electric generators, may actuate the yawing motion on said track means from a steady state position via differential forces acting upon said impellers, from directionally shifting flow impacting a TARP. Impeller yaw response motion will subsequently vector said impellers on said track means into a new steady state and impeller thrust force-balanced position within the TARP peripheral flow field for best energy recovery and energy extraction from said flow field.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: September 8, 1981
    Inventor: Alfred L. Weisbrich
  • Patent number: 4219303
    Abstract: A power plant for the generation of electricity from the flow of water currents uses turbine wheels within nozzles submerged in the water current, anchored to the bottom of the water course, as for example, the ocean, and self-buoyed to a level well below the water surface. Pairs of counter-rotating turbines are supported by their rims, which bear against friction drive wheels, which in turn drive electrical generators contained in water-tight machine rooms within the wall of the nozzle. A structural design is disclosed, providing for the building of modules of the nozzle ashore, which modules may then be barged to the deep-water site for assembly into the whole power plant.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: August 26, 1980
    Inventors: William J. Mouton, Jr., David F. Thompson
  • Patent number: 4217501
    Abstract: A windmill structure including a mounting for supporting one or a large number of windmills in an elevated position above the ground so that the windmills can weathercock and align with the wind. The mounting arrangement limits movement continuously in one direction and returns the windmill to its original position after it has turned in the same direction a predetermined amount.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: August 12, 1980
    Inventor: William D. Allison
  • Patent number: 4204799
    Abstract: A horizontal wind powered electrical generator is disclosed in which a horizontal reaction turbine is disposed within an augmentor cowling which extends downwind of the turbine. First stage curved stator blades interconnect the augmentor with the turbine cowling, and secondary stator blades are spaced downwind from said primary stator blades to extend inwardly from the augmentor to terminate short of the turbine cowling. These secondary stator blades have a greater angle of departure than the primary stator blades to increase the rotational velocity of the air at the expense of its axial velocity while permitting the axial velocity of the air moving inwardly of the secondary stator blades to be undiminished. A venturi-structured diffusor is carried by said augmentor in a downwind position to lower the pressure generally and assist the action of the secondary stator blades.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: May 27, 1980
    Inventor: Arie M. de Geus
  • Patent number: 4183717
    Abstract: A windmill structure in which a combined structure of sails and electrical generator device is pivotally suspended so that the position of the combined structure may be shifted in accordance with the wind velocity.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: January 15, 1980
    Inventor: Motohiro Yamada
  • Patent number: 4174923
    Abstract: A wind driven engine comprising a base, a housing which is rotatably mounted on the base, and two vertical rotors which are rotatably mounted in the housing and which are substantially enclosed by the housing. The blades of the vertical rotors overlap. An air diverter is centrally mounted inside the housing and in front of the rotors so as to divert air entering the housing onto the blades of the rotors which are adjacent the sides of the housing. The air diversion results in contradirectional rotation of the rotors, i.e., one rotor rotates clockwise and the remaining rotor rotates counterclockwise. An air vent is centrally placed in the housing above the air diverter to evacuate air from behind the air diverter. The vent is enclosed by an air shield which aids the evacuation of air through the vent. The contradirectionally rotating rotors are mechanically joined to an energy receiving system so as to be substantially self-timing and torque-free.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: November 20, 1979
    Inventor: Glen A. Williamson
  • Patent number: 4165468
    Abstract: Wind driven rotors are affixed along the length of a flexible power shaft, and the shaft is suspended at a great height above the earth by means of a swivel. The lowermost end of the shaft is connected to rotate a ground supported energy conversion device. The winds aloft impart rotational motion into the wind rotors, whereupon the rotational energy of the shaft is converted into electrical power or other form of power by the conversion device. The swivel allows the rotating shaft to be affixed to a nonrotating suspension device. The suspension device is ground supported and includes a member having opposed ends anchored to the top of two towers or two spaced apart mountains, with the generator being placed therebetween.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: August 21, 1979
    Inventors: Charles M. Fry, Henry W. Hise
  • Patent number: 4161370
    Abstract: First and second windmill wheels are mounted on and non-rotatably connected by shaft means, which define a vertical axis. Each of said windmill wheels has rigidly interconnected vanes, which are adapted to return opposite to the direction of the wind. Said two windmill wheels define axially outermost flight circle planes which intersect at an acute angle. The vanes of each of said windmill wheels are adapted to describe an orbital line, which is tangent to a corresponding orbital line described by the vanes of the other windmill wheel at an apex, which is disposed between said flight circle planes. Control means are operable to move said windmill wheels relative to each other so as to move said apex about said vertical axis and thus to vary said angle when measured in a vertical plane that is at right angles to the direction of the wind.
    Type: Grant
    Filed: April 11, 1978
    Date of Patent: July 17, 1979
    Inventor: Gottfried Oppolzer
  • Patent number: 4118144
    Abstract: Apparatus for deriving a rotational motion from air currents including first and second coaxial annular members spaced from each other along their axes by axial struts and a plurality of blade assemblies carried by the struts. In a preferred embodiment, the annular members are formed of circular I beams and the apparatus is supported for rotation about the axes of the annular members by rollers engaging the web of the I beams. The rollers may be carried by first and second posts with one of the posts being rotatable about the other such that the apparatus can accommodate changing wind directions. The blade assemblies may include an impeller hingedly secured to a cross-beam extending between adjacent struts with each impeller being individually spring biased to present more or less surface to the air current, dependent on its velocity.
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: October 3, 1978
    Inventor: Lawrence L. Kelley
  • Patent number: 4110631
    Abstract: A wind-driven generator having a plurality of rotors each having a rim in frictional engagement with a power take-off drum which is mounted on the shaft of an electrical generator, and in which the rotor rims are pressed against the drum by the wind force on the rotors and with a reduced force which varies as a positive function of the wind force.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: August 29, 1978
    Assignee: Wind Power Systems, Inc.
    Inventor: Edmund L. Salter
  • Patent number: 4080100
    Abstract: A wind motor having a double set of rotor blades of special configuration mounted between a central hub and an outer rim. The front rotor has an extending shroud protruding well in front of the blades for capturing the prevailing wind. The center of the rotor is solid with the blades at the center being configured so as to be substantially at right angles to the wind flow and thus form a substantially solid area at the center of the rotor. The specially configured blades angle away from the center hub with a backward tilt of approximate Also, the blades twist so that the portion attached to the rim or shroud of the device present an air foil effect with tip structure for the leading edge being approximately from the axis while the trailing edge is similarly at approximately a angle in the opposite plane.
    Type: Grant
    Filed: September 28, 1976
    Date of Patent: March 21, 1978
    Inventor: Walter C. McNeese
  • Patent number: 4074951
    Abstract: A wind power converter comprising: a pair of rotatable turbines with elongated curved blades disposed within a rotatable housing on axially parallel shafts, the curvature of the blades of one turbine being opposite to the curvature of the blades of the second turbine so that wind passing between said turbines will rotate the turbines in opposite directions; the housing comprising shaft-supporting sections at the ends of the turbines, lateral sections connecting the end sections, a pair of wind deflectors disposed between the end sections and extending from adjacent edges of the lateral sections toward the midpoint between the turbines and terminating approximately the same distance from each other as the distance between the turbine shafts, and a pivotally mounted vertically disposed vane extending from a portion of the housing opposite to the wind deflectors; said rotatable housing being supported on a vertically disposed central shaft and on a plurality of beams radiating therefrom with the free end of each
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: February 21, 1978
    Inventor: Gerald E. Hudson
  • Patent number: 4073516
    Abstract: A tethered wind-driven floating power plant which includes a support body carrying at least one rotor assembly, a current generator coupled to the rotor and alignment assembly for aligning the rotor to face into the wind, a ground anchor and at least one captivating stay connecting the floating power plant to the anchor. The support body is hollow and gas-filled to carry its own weight as well as the weight of the rotor assembly, current generator and alignment assembly. The support body is connected to the captivating stay through a joint connection having three degrees of freedom. The rotors are gimbal-mounted, at a variable relative position with respect to the support body but in fixed positions relative to one another.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: February 14, 1978
    Inventor: Alberto Kling
  • Patent number: 4065225
    Abstract: A windmill having a plurality of pairs of diametrically opposed vanes mounted for rotation about a horizontal axis in alignment with the wind. The pairs of vanes are supported in uniformly spaced relationship to each other axially of the axis of rotation and each successive pair is indexed circumferentialy in the direction of rotation relative to the prior pair. The vanes are automatically moved to a less efficient position as the speed of the wind increases to limit the maximum speed of the windmill.
    Type: Grant
    Filed: April 22, 1976
    Date of Patent: December 27, 1977
    Inventor: William D. Allison
  • Patent number: 3964426
    Abstract: A mechanical drive actuated by wind has propellers rotatably mounted on a vertical standard which is rotatably fastened to the deck of a ship. The rotational force of the propellers is transmitted by a series of shafts to drive the ship's screw. The vertical standard may be rotated to take full advantage of the prevailing winds.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: June 22, 1976
    Inventor: Fred C. Lindsey