Flexible Patents (Class 416/240)
  • Patent number: 9033283
    Abstract: Embodiments of an aerodynamic structural insert frame comprise a leading edge, a trailing edge opposite the leading edge, and at least one cavity between the leading edge and trailing edge, wherein the aerodynamic structural insert frame is configured to deflect upon activation by an external stimulus; at least one deformable buckling member extending the distance between opposite edges of the cavity, wherein the deflection of the aerodynamic structural insert frame is configured to trigger deflection of the deformable buckling member; a pivot region; and at least one stopper bar attached to and extending from one edge of the cavity a distance less than the distance between opposite edges of the cavity, wherein the stopper bar is configured to stop the deflection of the aerodynamic structural insert and the buckling member when the stopper bar strikes an opposite edge of the cavity.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 19, 2015
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Christopher Douglas Hemmelgarn, Bryan Michael Pelley
  • Patent number: 8944365
    Abstract: A rotorcraft may include an airframe and a rotor connected to the airframe. The rotor may include a hub and a rotor blade connected to the hub to extend radially away therefrom. The rotor blade may include biasing fibers, oriented to increase the twist of the rotor blade in response to an increase in the speed of rotation of the rotor corresponding to a mission, task, or maneuver.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: February 3, 2015
    Assignee: Groen Brothers Aviation, Inc.
    Inventor: David L. Groen
  • Patent number: 8944748
    Abstract: A fluid pump device, in particular for a medical application, is described having a compressible pump housing and rotor, as well as with a drive shaft which runs in a sleeve and on whose end the fluid pump is arranged. In order to utilize all possibilities of a space-saving arrangement of the respective pump housing of the rotor, which is compressible per se, and as the case a bearing arrangement, the mentioned elements are displaceable to one another in the axial direction compared to an operation position. In particular these elements may be end-configured by way of an axial movement of the drive shaft after the assembly.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 3, 2015
    Assignee: ECP Entwicklungsgesellschaft mbH
    Inventor: Reiner Liebing
  • Publication number: 20150011134
    Abstract: A device for insertion in watercraft including propulsion means comprising a pair of flappers which oscillate through an arcuate path in a transverse direction with respect to the central longitudinal dimension of the watercraft. As input force is applied, the flappers twist to form an angle of attack for providing forward thrust. The means for applying propulsive force includes a pair of pedals, and further includes pedal cranks operatively associated with the propulsion means, the fore ends of the pedals being pivotally attached to a fixed point.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 8, 2015
    Inventors: James Taylor Czarnowski, Gregory Scott Ketterman, Jason Christopher Kardas, Philip James Dow, Graeme Stuart Wicks, Drew William Brackett
  • Patent number: 8888463
    Abstract: The invention relates to a rotor blade for wind energy installation, comprising at least one flange running in a longitudinal direction from a rotor blade root to a rotor blade tip, whereby a width of the flange decreases along the longitudinal direction. The invention also relates to a method for producing a rotor blade in that at least one flange with a width decreasing in the longitudinal direction is applied to a rotor blade inner wall, and to a laying assistance device for positioning strips of the flange.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: November 18, 2014
    Assignee: REpower Systems AG
    Inventor: Matthias Schubert
  • Patent number: 8851857
    Abstract: Provided are a wind turbine blade that can reduce the thickness of a turbulent-flow boundary layer generated on the blade surface of a blade tip portion to prevent noise generated at a trailing edge portion effectively, as well as a wind power generator using the same. Provided is a wind turbine blade, which is a wind turbine blade having an airfoil shape in cross section, wherein an angle-of-attack decreasing portion that decreases an angle of attack during rotation at at least a predetermined rotational speed is provided over a predetermined range from a blade tip to a blade root side.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: October 7, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd
    Inventors: Kentaro Hayashi, Hiroshi Nishino, Hiroyuki Hosoya, Atsushi Matsuo, Kai Karikomi
  • Patent number: 8790069
    Abstract: A enclosed vertical axis fluid rotor used as a wind turbine of two designs having multiple sails that are concave on the inside and convex on the outer side which allows omni-directional wind or other fluids to engage sails to create optimum fluid momentum. These are sectional segmentation of each rotor that can be stacked upon one another at locating lug points to be attached to each rotor to keep radial alignment precise during assembly. The preferred embodiment would be of composite materials or plastics that can be molded to a given design of three or more stages. The advantage of this turbine is using the fluids to their optimum efficiency. These designs have low starting speed, low precession, and low drag. One design has a central axis that turns with bearings with the rotor and the other design is a central static (non-turning) axis shaft that allows the turbine to turn on bearings.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: July 29, 2014
    Assignee: No Fossil Energy, LLC
    Inventor: Bruce Elliot Anderson
  • Publication number: 20140193260
    Abstract: A radial pump for water has a drive motor, a pump chamber and an impeller revolving in the pump chamber. The impeller has a plurality of impeller blades which are designed, at least in regions, to be elastic and have a fixed mounting arranged in a region located near the impeller axis of rotation. They can bend elastically radially outward from this fixed mounting counter to a spring force.
    Type: Application
    Filed: June 22, 2012
    Publication date: July 10, 2014
    Applicant: E.G.O. ELEKTRO-GERAETEBAU GMBH
    Inventors: Volker Block, Tobias Albert
  • Patent number: 8678324
    Abstract: Embodiments of the present airfoil systems comprise an airfoil with a leading edge, a trailing edge, an upper surface, a lower surface, and a skin surface, at least one structural element located within said airfoil, wherein said structural element supports the skin surface having an upper skin portion and a lower skin portion wherein said structural element can change its shape in response to external stimulus during flight operations, and an actuating means for selectively altering the curvature of said structural element which alters the curvature of said upper skin portion and of said lower skin portion to cause nonlinear deflection of said skin surface between an extreme raised position through a neutral position to an extreme lowered position; whereby the outer surface curvature of said airfoil and said skin surface is smooth and continuous over substantially the entirety thereof at all positions of said skin surface.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: March 25, 2014
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Christopher Douglas Hemmelgarn, Bryan Michael Pelley, Kristin Marie Cable, Brandon Charles Kirby
  • Patent number: 8657581
    Abstract: A blade comprises a lightweight core, a composite material disposed on the core, and a skin located on the composite material. The composite material comprises fibers incorporated into a thermoplastic resin matrix in the form of a prepreg sheet or wet layup. The rotor blade may also comprise a front edge member attached along at least a portion of a leading edge of the core, a rear edge member attached along at least a portion of a trailing edge of the core, and a skin located over the core, the front edge member, and the rear edge member. The rotor blade may also comprise a spar extending through the core along a longitudinal axis of the rotor blade, and a skin located over the core and the spar. The edge members and the spars may be fabricated from thermoplastic material.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: February 25, 2014
    Assignee: Gordon Holdings, Inc.
    Inventors: Edward Pilpel, Benjamin Pilpel
  • Patent number: 8602732
    Abstract: A wind turbine rotor blade includes a root portion and an airfoil portion extending from the root portion and defined by a leading edge and a trailing edge. The airfoil portion further includes a main foil section and a trailing edge section that is pivotally connected to the main foil section along a span-wise extending pivot zone. The trailing edge section is biased to a neutral position wherein the trailing edge section is pivoted chord-wise to a low wind speed position relative to the main foil section.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: December 10, 2013
    Assignee: General Electric Company
    Inventor: Megan M. Wilson
  • Publication number: 20130287588
    Abstract: A fan blade for a turbine system includes a root portion connectable to a rotating member of a turbine system and airfoil portion having a morphable portion on an edge of the airfoil portion. The morphable portion includes a plurality of layers aligned unsymmetrically relative to each other in a thickness direction and changes in shape in response to a change in a speed of the airfoil portion.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Dong-Jin SHIM, Scott Roger FINN, Nicholas Joseph KRAY, Vikash Kumar SINHA, Prakash Kashiram JADHAV, Li ZHENG
  • Patent number: 8517682
    Abstract: A wind turbine blade having a suction side and a pressure side, which sides are connected at a leading edge and a trailing edge, wherein one or more shape modifiable air foil sections are defined in the area of the trailing edge of the blade, and wherein said one or more shape modifiable air foil sections are attached to a blade body, each of the one or more modifiable air foil sections having an upper skin and a lower skin, a first one of the upper and lower skin being secured to the blade body, and a second one of the upper and lower skin being slidably movable with respect to the blade body, so that a force is applied to one of said skins cause said second skin to slide with respect to the blade body, so as to thereby modify the air foil shape of the trailing edge.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 27, 2013
    Assignee: Vestas Wind Systems A/S
    Inventor: Mark Hancock
  • Patent number: 8500406
    Abstract: Methods for deploying a section of a wind turbine rotor blade include compressing a section of skin from an airfoil profile to a retracted profile, wherein the section of skin includes a shape memory polymer composite, and heating the section of skin to at least a transition temperature of the shape memory polymer composite so that the section of skin transitions from the retracted profile back to the airfoil profile.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 6, 2013
    Assignee: General Electric Company
    Inventors: Carlos Rafael Ramírez Jiménez, Carlos Alberto Concha Flores
  • Patent number: 8469663
    Abstract: Method and apparatus for converting the kinetic energy of a moving fluid stream into useful work by using a parallel cascade of aerofoils or hydrofoils positioned therein. The foils may be provided with at least two degrees of freedom and adjacent foils move in antiphase. The foils are subjected to resonant oscillations, known as flutter, induced by the fluid flow. Profiled inflow and outflow ducts may be positioned upstream and downstream, and the apparatus may be enclosed in a profiled duct, to increase efficiency by altering the fluid velocity and pressure. The foils are cantilevered, supported by vertical rods but are otherwise unattached. A cascade comprised of independent foil modules, each including a foil, a power conversion module and a motion control module, may be programmed to (1) receive energy from a fluid stream to generate power, or (2) transfer energy into a fluid stream to create propulsion or pumping.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: June 25, 2013
    Assignee: ResHydro LLC
    Inventor: Colin C. Kerr
  • Publication number: 20130129519
    Abstract: A rotor blade element and a method for improving the efficiency of a wind turbine rotor blade are provided. The wind turbine rotor blade element is adapted for mounting on the wind turbine rotor blade. The wind turbine rotor blade has a trailing edge, a suction side and a pressure side. The blade element has a trailing edge, a first surface and a second surface. The first surface forms a pressure side surface portion. The second surface has a suction side surface portion and a contact surface.
    Type: Application
    Filed: October 18, 2010
    Publication date: May 23, 2013
    Inventors: Soeren E. Nielsen, Carsten Thrue
  • Patent number: 8439859
    Abstract: The catheter device comprises a drive shaft connected to a motor, and a rotor mounted on the drive shaft at the distal end section. The rotor has a frame structure which is formed by a screw-like boundary frame and rotor struts extending radially inwards from the boundary frame. The rotor struts are fastened to the drive shaft by their ends opposite the boundary frame. Between the boundary frame and the drive shaft extends an elastic covering. The frame structure is made of an elastic material such that, after forced compression, the rotor unfolds automatically.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: May 14, 2013
    Assignee: AIS GmbH Aachen Innovative Solutions
    Inventors: Joachim Georg Pfeffer, Thomas Schmitz-Rode, Rolf W. Günther
  • Publication number: 20130108458
    Abstract: One embodiment of vertical axis wind turbine, having a soft sail (101), receiving airfoil form in the relative air flow. The soft sail (101) is attached to a mast (102), connected to a rotating shaft (202), transferring motion to a generator or alternator (203). Another embodiment of vertical axis wind turbine, having a soft sail (1306), receiving its airfoil form from the relative air flow and centrifugal forces, acting on it. Other embodiments are described and shown.
    Type: Application
    Filed: October 30, 2011
    Publication date: May 2, 2013
    Inventor: Leonid Goldstein
  • Patent number: 8430638
    Abstract: A noise reducer for a rotor blade of a wind turbine and a rotor blade assembly are disclosed. The rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge and a trailing edge each extending between a tip and a root. The rotor blade further defines a span and a chord. The rotor blade assembly further includes a noise reducer configured on the rotor blade. The noise reducer includes a plurality of rods each having a body extending between a first end and a second end. The body of each of the plurality of rods contacts and extends parallel to the body of a neighboring rod of the plurality of rods when the noise reducer is in a stable position.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: April 30, 2013
    Assignee: General Electric Company
    Inventors: Roger Drobietz, Ariane Frere, Andreas Herrig, Wendy Wen-Ling Lin
  • Patent number: 8430636
    Abstract: A rotor assembly for a wind turbine including at least one blade adapted to automatically adjust its shape as a function of rotational speed to create an efficient fluid dynamic profile over a wide range of wind conditions and rotational speeds. The rotor assembly includes at least one blade configured to respond to rotation induced forces to automatically bend in a manner to optimize its wind profile.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: April 30, 2013
    Inventors: Thomas V. Wagner, Joseph W. Wagner
  • Patent number: 8418967
    Abstract: Embodiments of the present airfoil structural insert comprise an airfoil structural insert frame, a skin surface disposed about the airfoil structural insert frame, at least one attachment point operable for coupling to an aerodynamic structure, a leading edge disposed on one end of the airfoil structural insert frame, a trailing edge disposed on an opposite end of the airfoil structural insert frame, and at least one structural element configured to support the skin surface, wherein said structural element undergoes at least one nonlinear shape change from a first shape to a deflected shape.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 16, 2013
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Christopher Douglas Hemmelgarn, Bryan Michael Pelley
  • Patent number: 8376707
    Abstract: An impeller includes a hub, and a plurality of blades supported by the hub, the blades being arranged in at least two blade rows. The impeller has a deployed configuration in which the blades extend away from the hub, and a stored configuration in which at least one of the blades is radially compressed, for example by folding the blade towards the hub. The impeller may also have an operational configuration in which at least some of the blades are deformed from the deployed configuration upon rotation of the impeller when in the deployed configuration. The outer edge of one or more blades may have a winglet, and the base of the blades may have an associated indentation to facilitate folding of the blades.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: February 19, 2013
    Assignees: Thoratec Corporation, The Penn State Research Foundation
    Inventors: Mark W. McBride, Thomas M. Mallison, Gregory P. Dillon, Robert L. Campbell, David A. Boger, Stephen A. Hambric, Robert F. Kunz, James P. Runt, Justin M. Walsh, Boris Leschinsky
  • Publication number: 20130041202
    Abstract: To design the rotor (6, 6?, 6?, 6??, 60, 60?) as compressible in the radial direction in a fluid pump, in particular for microinvasive medical use, said rotor is configured as stretchable in its longitudinal direction (16) by push elements and pull elements acting axially on it.
    Type: Application
    Filed: January 25, 2011
    Publication date: February 14, 2013
    Applicant: ECP ENTWICKLUNGSGESELLSCHAFT MBH
    Inventor: Thomas Toellner
  • Patent number: 8333560
    Abstract: The anti-Sudden infant death syndrome baby fan is a portable fan that can attach to a baby crib in order to provide air movement across an infant in order to prevent the likelihood of sudden infant death syndrome. The portable fan comprises a housing, foam blades, rubber mat, knob, ON/OFF switch, and battery compartment. The inclusion of foam blades is a safety design in that foam blades will not inflict any substantive injury to anyone who touches said blades while in motion, i.e. the infant. The portable fan can also be integrated into the design of a crib mobile in order to circulate air from above the crib.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 18, 2012
    Inventor: James Ward
  • Publication number: 20120294728
    Abstract: A wind diode with vanes having flexible flaps arrayed linearly along flap supports to catch the wind against the flaps supported by a filament array or, rotating to the opposite direction, to allow the wind to pass through the filament array by moving the flaps into a position that does not catch the wind. By using multiple flaps in the array, variations in the wind velocity profile across the vane are accounted for, thereby reducing drag. The wind diode is preferably mast-mounted, with the drive train attached to the exterior of the mast. Vertical and horizontal wind diodes are possible, as is a hybrid that is reconfigurable to be used in either orientation. The drive train preferably uses a continuous variable range transmission to provide constant speed output.
    Type: Application
    Filed: November 18, 2011
    Publication date: November 22, 2012
    Inventor: Randal Stewart
  • Publication number: 20120294727
    Abstract: In a rotor for a fluid pump which is made radially compressible and expandable and has a hub (4) and at least one conveying element (10, 11, 19, 20) which has a plurality of struts (12, 13, 14, 15, 16, 21, 22, 27, 28) and at least one membrane (18) which can be spanned between them, provision is made for a design in accordance with the invention which is as simple and inexpensive as possible that at least one first group of struts is pivotable in a pivot plane, starting from a common base, and can thus be spanned open in the manner of a fan, wherein the conveying element lies along the hub and contacts it over its full length in the expanded state to avoid a pressure loss at the margin of the conveying element between it and the hub and thus to realize an optimum efficiency.
    Type: Application
    Filed: December 23, 2010
    Publication date: November 22, 2012
    Applicant: ECP ENTWICKLUNGSEGESELLSCHAFT MBH
    Inventor: Daniel Roehn
  • Patent number: 8303242
    Abstract: A hydropower generating turbine having an impeller housing disposed to receive water, at least one impeller disposed within the impeller housing, at least one adjustable duct pivotally connected to the impeller housing, and, where the duct has a plurality of duct leafs, wherein the duct leafs articulate and cause the duct to converge and diverge for selectively disposing a fluid about the impeller. The ducts may be inflow or outflow ducts, and the turbine may react to a change in the fluid and alter the shape of the impeller. Further, the turbine may have an automated controller where variable change in the flow is detected by a sensor and transmitted to the automated controller to cause a directional shift in the multidirectional turbine.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: November 6, 2012
    Assignee: Hydro Green Energy, LLC
    Inventors: Wayne F. Krouse, Frederick E. Becker, Andrew R. Provo
  • Patent number: 8215913
    Abstract: A lift-type turbine comprising at least three blades at circumferentially spaced positions is supported for rotation about a vertical axis. Each blade has an airfoil shape to generate a torque about the axis responsive to wind across the blades. A support comprising cables under tension is connected between adjacent ones of the blades to extend generally circumferentially about the turbine. Accordingly a minimum number of parts form the structure of the blades while minimizing the drag produced during rotation thereof due to the support members lying in a common circumferential path. The tension of the support members can support the blades in a pre-stressed condition to optimize the shape and performance thereof.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: July 10, 2012
    Inventor: Glenn Raymond Lux
  • Patent number: 8215908
    Abstract: An aerodynamic profile includes a main profile body defining a profile depth direction and being shear-flexible in the profile depth direction, a tension-stiff and compression-stiff upper covering skin, a tension-stiff and compression-stiff lower covering skin, wherein the upper and lower covering skins envelope the main profile body, a bearingless and hingeless rear profile deformation region disposed at a rear edge region, and at least one actuator disposed in the main profile body. The at least one actuator is configured to initiate a flexural motion of the main profile body resulting in a curvature of the upper and lower covering skins and to deform the rear profile deformation region and so as to yield a flap deflection directed opposite to a direction of the flexural motion.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: July 10, 2012
    Assignee: Eurocopter Deutschland GmbH
    Inventors: Andree Altmikus, Rupert Pfaller, Bernhard Enenkl
  • Patent number: 8157533
    Abstract: A wind turbine blade comprising an active elastic member arranged with access to the surface of the wind turbine blade is provided. The active elastic member is deformable from a first shape to a second shape and the lift coefficient of the airfoil with the active elastic member in the first shape is larger than the lift coefficient of the airfoil with the active elastic member in the second shape. Furthermore, a wind turbine comprising such a wind turbine blade and a method of operating a wind turbine comprising such a wind turbine blade are provided.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: April 17, 2012
    Assignee: Vestas Wind Systems A/S
    Inventors: Kristian Balschmidt Godsk, Thomas S. Bjertrup Nielsen
  • Patent number: 8152465
    Abstract: 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.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 10, 2012
    Assignee: Eurocopter Deutschland GmbH
    Inventors: Peter Jaenker, Valentin Kloeppel
  • Patent number: 8113777
    Abstract: A device is described for generating energy. The device includes at least two ultralight airfoils rotating along their own axis, which functionally reproduce the characteristics of a propeller. The ultralight airfoils which characterize such aerodynamic configuration use pulling members (such as cables or tie-rods) to keep their shape when operating. An important weight reduction of the structure is thus obtained, which allows different applications in the aeolian generation field.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: February 14, 2012
    Assignee: Sequoia It S.R.L.
    Inventor: Gianni Vergnano
  • Patent number: 8087875
    Abstract: A multidirectional hydrokinetic power generating turbine has an impeller housing with one or more impellers disposed within the impeller housing, one or more adjustable ducts pivotally connected to the impeller housing, and a plurality of duct leafs disposed about the one or more ducts. The plurality of duct leafs articulate and cause the one or more adjustable ducts to converge and diverge to selectively disposing a fluid about the one or more impellers.
    Type: Grant
    Filed: September 27, 2008
    Date of Patent: January 3, 2012
    Inventor: Wayne F. Krouse
  • Patent number: 8079816
    Abstract: 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.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: December 20, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Ci-Ming Huang, Kun-Ming Lee, Ya-Hui Hung, Ching-Hsiang Huang
  • Publication number: 20110255987
    Abstract: The invention relates to a compound blade and a fan installed with it. The compound blade is composed of at least a flexible layer and a rigid layer, with the rigid layer smaller than the flexible layer. So the edge of the compound blade is only formed of the flexible layer after the flexible layer combined with the rigid layer. A fan installed with the compound blade can not only run without danger because of the flexible layer, but also run as efficiently as a general one owing to the rigid layer.
    Type: Application
    Filed: October 19, 2010
    Publication date: October 20, 2011
    Applicant: OCEAN RICH ELECTRICITY PRODUCT COMPANY
    Inventor: JIH-I OU
  • Patent number: 8011882
    Abstract: A vane assembly for a gas turbine engine, the assembly including a plurality of vanes 14 with an asymmetric organic metal/ceramic matrix composite lay up, such that when the vanes 14 are placed in tension or compression the profile of the vane 14 will alter by twisting or untwisting. Other materials may be provided for the vanes 14, and/or other methods may be used for placing the vanes 14 in tension or compression to provide positive changes to the profile thereof.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: September 6, 2011
    Assignee: Rolls-Royce Plc
    Inventor: Alison J. McMillan
  • Publication number: 20110211970
    Abstract: A wind turbine blade includes an upper shell member and a lower shell member with an internal cavity therebetween. The shell members are joined at leading and trailing edges of the blade with a bond paste along a bond line having a designed width. A barrier is disposed within the internal cavity between the upper and lower shell members along at least one of the leading or trailing edges and prevents movement of the bond paste into the internal cavity beyond the width of the bond line. The barrier includes a wall that is substantially impermeable to the bond paste and a support member that extends from the wall to the leading or trailing edge of the blade. The support member locates the wall at the bond line and the wall has a shape and resiliency so as to be engaged against the upper and lower shell members within the internal cavity.
    Type: Application
    Filed: December 13, 2010
    Publication date: September 1, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Jacob Johannes Nies
  • Patent number: 7997870
    Abstract: An electrical generation device includes a turbine rotor for electrical power generation, preferably underwater, from moving fluid, preferably water currents or the wind. The turbine rotor includes turbine blades that include flexible portions, preferably mounted at the edges of stiff portions of the turbine blades.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: August 16, 2011
    Assignee: B N Balance Energy Solutions, LLC
    Inventor: Joel G. Neumann
  • Patent number: 7976283
    Abstract: A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade assembly further includes a noise reducer configured on a surface of the rotor blade. The noise reducer includes a plurality of reinforcing members and a plurality of noise reduction features. Each of the plurality of reinforcing members extends outwardly with respect to the rotor blade. Each of the plurality of noise reduction features is connected to one of the plurality of reinforcing members and defines a width. Each of the plurality of reinforcing members causes the connected noise reduction feature to have a variable stiffness throughout at least a portion of the width of the connected noise reduction feature.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: July 12, 2011
    Assignee: General Electric Company
    Inventor: Robert Karl Huck
  • Patent number: 7938623
    Abstract: An inflatable rotor blade for a wind turbine includes a flexible skin. The flexible skin assumes, when inflated by means of an inflation medium, the shape of an airfoil which has an inner cavity. When the inner cavity is formed, at least one stiffener unit is arranged in the inner cavity of the rotor blade and maintains the airfoil shape of the flexible skin.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: May 10, 2011
    Assignee: General Electric Company
    Inventor: Ronald Ralph Cairo
  • Patent number: 7931443
    Abstract: A turbomachine with a row of blades in which the blades are structured such that the blades can untwist at higher rotational speeds in order to provide optimal aerodynamics at different rotational speeds. Each blade is formed with a thin slot between the pressure side wall and the suction side wall so that stresses from centrifugal forces occurring during high rotations will not pass from adjacent walls and allow for the blade to untwist more than a solid blade. Each blade is formed from a fiber laminated composite material with the fibers oriented at different directions to form different stiffness in each direction so that a desired untwist can occur based upon a given blade mass and rotational speed. A thin sheet of a slippery material can be placed within the thin slot and between the adjacent airfoil walls to allow slippage between the adjacent walls and to promote damping for the blade.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: April 26, 2011
    Assignee: Florida Turbine Technologies, Inc.
    Inventors: Brian Potter, Alfred P. Matheny
  • Patent number: 7927068
    Abstract: An impeller includes a hub, and a plurality of blades supported by the hub, the blades being arranged in at least two blade rows. The impeller has a deployed configuration in which the blades extend away from the hub, and a stored configuration in which at least one of the blades is radially compressed, for example by folding the blade towards the hub. The impeller may also have an operational configuration in which at least some of the blades are deformed from the deployed configuration upon rotation of the impeller when in the deployed configuration. The outer edge of one or more blades may have a winglet, and the base of the blades may have an associated indentation to facilitate folding of the blades.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: April 19, 2011
    Assignees: Thoratec Corporation, The Penn State Research Foundation
    Inventors: Mark W. McBride, Thomas M. Mallison, Gregory P. Dillon, Robert L. Campbell, David A. Boger, Stephen A. Hambric, Robert F. Kunz, James P. Runt, Justin M. Walsh, Boris Leschinsky
  • Patent number: 7896609
    Abstract: The present invention is a vertical wind turbine having a turbine with a plurality of blades or wind vanes. The blades are constructed and attached to the shaft of the turbine so as to allow them to twist open to present more surface area to wind currents when a threshold rotational velocity is reached. Also presented are a novel outer shell that is placed over at least part of the shaft and a novel turbine blade.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: March 1, 2011
    Assignee: SRI VAWT, Inc.
    Inventors: John Sinclair Mitchell, George Arthur Scott, Michael James Detenbeck
  • Publication number: 20110031758
    Abstract: A reinforcing sheet for wind power generator blades includes a resin layer and a restricting layer laminated on the resin layer.
    Type: Application
    Filed: July 26, 2010
    Publication date: February 10, 2011
    Applicant: Nitto Denko Corporation
    Inventors: Yoshiaki Mitsuoka, Yasuhiko Kawaguchi, Takahiro Fujii, Takuji Okeyui
  • Patent number: 7857598
    Abstract: The twist distribution of torsionally-flexible rotor blades is adjusted by exploiting centrifugal effect on inertial torquers affixed at one or more stations along the blade span. Twist is thereby made to vary passively as a function of rotor speed and hub incidence angle. With inertias of appropriate size and location, the twist variation is such that high rotor efficiency is maintained over a wide range of operating conditions. Satisfactory dynamic behavior of the blade, including cyclic-pitch response and flutter resistance, is simultaneously achieved.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: December 28, 2010
    Assignee: Aerovel Corporation
    Inventors: Brian T. McGeer, Andreas H. von Flotow
  • Patent number: 7845911
    Abstract: Rotor blades are pre-bent in at least one of a flap direction and a lag direction, wherein the pre-bent portion comprises at least 20-60% of the length of the blade. Preferred methods include analyzing the rotor dynamic behavior using computational methods, deciding on the operational case (rotor lift load, forward speed, etc.) in which the loads and vibration reductions are desired, and using the computed results to decide on an amount of pre-bending of the unloaded blade so that it comes closer to the feather axis under load. Another class of preferred methods models the bending of a first blade in flight loading conditions, and then designs a second blade having a pre-bend in approximately an equal in magnitude and opposite in direction to the bending. It is contemplated that such “pre-bent” blades can significantly reduce rotor loads and vibration levels of rotorcraft equipped with semi-rigid or rigid rotors.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: December 7, 2010
    Inventor: Abe Karem
  • Patent number: 7841976
    Abstract: An impeller includes a hub and at least one blade supported by the hub. The impeller has a stored configuration in which the blade is compressed so that its distal end moves towards the hub, and a deployed configuration in which the blade extends away from the hub. The impeller may be part of a pump for pumping fluids, such as pumping blood within a patient. A blood pump may include a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller may reside in the expandable portion of the cannula. The cannula may have a compressed diameter which allows it to be inserted percutaneously into a patient. Once at a desired location, the expandable portion of the cannula may be expanded and the impeller expanded to the deployed configuration. A flexible drive shaft may extend through the cannula for rotationally driving the impeller within the patient's body.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: November 30, 2010
    Assignees: Thoratec Corporation, The Penn State Research Foundation
    Inventors: Mark W. McBride, David A. Boger, Robert L. Campbell, Gregory P. Dillon, Stephen A. Hambric, Robert F. Kunz, Boris Leschinsky, Thomas M. Mallison, James P. Runt, Justin M. Walsh
  • Publication number: 20100283251
    Abstract: A turbine assembly comprising a blade assembly having a plurality of curved blades with an inner end of each of the curved blades terminating at a cavity. The cavity has an open side with a generator located within the cavity and coupled to the blade assembly. The turbine assembly is suitable for underwater use. Multiple turbine assemblies may be connected to form a power generation station.
    Type: Application
    Filed: January 6, 2009
    Publication date: November 11, 2010
    Inventor: Richard Arthur Henry Reynolds
  • Publication number: 20100014981
    Abstract: The twist distribution of torsionally-flexible rotor blades is adjusted by exploiting centrifugal effect on inertial torquers affixed at one or more stations along the blade span. Twist is thereby made to vary passively as a function of rotor speed and hub incidence angle. With inertias of appropriate size and location, the twist variation is such that high rotor efficiency is maintained over a wide range of operating conditions. Satisfactory dynamic behavior of the blade, including cyclic-pitch response and flutter resistance, is simultaneously achieved.
    Type: Application
    Filed: May 31, 2007
    Publication date: January 21, 2010
    Applicant: HOOD TECHNOLOGY CORPORATION
    Inventors: Brian T. McGeer, Andreas H. von Flotow
  • Patent number: 7648339
    Abstract: Cloth or fabric fan blades self-inflate when rotated about an axis to produce air movement, the blades being secured to a fan hub which is in turn connected to a fan motor assembly that provides the rotational force to inflate the blades, the blades collapsing upon contact with any object for safety purposes, the innovative blades being lightweight and safe such that no fan guard is required.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: January 19, 2010
    Assignee: Vornado Air Circulation Systems, Inc.
    Inventors: Glen Wesley Ediger, Luke Edward Kelly