Resilient Bias Or Mount Patents (Class 416/135)
  • Patent number: 10145382
    Abstract: A composite blade assembly and a method of assembling a composite blade are provided. The composite blade assembly includes a composite blade having a radially inner root. A composite blade assembly includes a first platform and a circumferentially adjacent second platform abutting the first platform at a platform joint. Each of the first platform and the second platform includes a radially outer surface and a radially inwardly extending attachment member. The platform joint includes a slot extending through adjacent edges of the first platform and the second platform. The slot is configured to receive the radially inner root and the radially inner root is configured to be sandwiched between the attachment members. The blade assembly includes an adhesive system configured to join the radially inner root of the composite blade and the attachment members into a unitary structure, and a retaining clip configured to bias the attachment members towards each other.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: December 4, 2018
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Jan Christopher Schilling, Nitesh Jain, Abhijit Roy
  • Patent number: 10047625
    Abstract: A gas turbine engine, a fan section for a gas turbine engine, and a method for assembling a fan section of a gas turbine engine are disclosed. The fan section may include a fan hub having a slot, a spinner having a castellated spinner seal, a fan blade including an airfoil extending from a root to a tip, wherein the airfoil has a leading edge and the root is received in the slot, and a platform secured to the fan hub and arranged between adjacent fan blades. The fan section may further include a flap seal having a base secured to a side of the platform, and a flap integral with and extending from the base portion and canted toward the root and engaging the blade, the seal trimmed back from the leading edge of the airfoil.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: August 14, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Royce E. Tatton
  • Patent number: 9896949
    Abstract: A fan is provided. The fan may comprise a fan blade and a blade platform coupled to the fan blade. The blade platform may be a thermoplastic. A fan blade platform is also provided. The fan blade platform may comprise a first platform half comprising a slot at a first end of the first platform half and a first receiving member at a second end of the first platform half opposite the first end of the first platform half. A second platform half may comprise a hook. The second platform half may also include a second receiving member at a second end of the second platform half opposite the first end of the second platform half with the hook configured to interface with the slot. A pin may be configured to pass through the first receiving member and the second receiving member.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: February 20, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Thomas J. Robertson
  • Patent number: 9759075
    Abstract: A turbine arrangement is provided, particularly a gas turbine arrangement, having at least one rotor blade and a turbine disc, the rotor blade having a root portion, the turbine disc having at least one slot in which the root portion of the rotor blade is secured. The slot has a plurality of opposite pairs of slot lobes and a plurality of opposite pairs of slot fillets, and a slot bottom of the slot. The slot bottom is arranged to have a first convex surface section. Furthermore the root portion of the rotor blade has a root bottom with a first concave surface section corresponding to the first convex surface section of the slot bottom. Additionally, the first convex surface section is pierced by an outlet of a cooling duct through the turbine disc.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: September 12, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Richard Bluck, Martin Hughes
  • Patent number: 9714086
    Abstract: An apparatus comprising a soft in plane rotor yoke comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material having a plurality of first fibers oriented in a first direction, and a plurality of second layers formed of a second composite fabric material having a plurality of second fibers oriented in a second direction. Included is an apparatus comprising a soft in plane rotor comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material, and a plurality of second layers formed of a second composite fabric material, wherein the soft in plane rotor yoke does not comprise any narrow steered slit tape or filament windings.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 25, 2017
    Assignee: BELL HELICOPTER TEXTRON INC.
    Inventors: Robert Wardlaw, Werner Idler, John R. McCullough, Patrick Ryan Tisdale, Frank Bradley Stamps, James L. Braswell, Jr., Ronald J. Measom, Paul K. Oldroyd
  • Patent number: 9586679
    Abstract: A helicopter main rotor control system includes a trunnion head mountable to a rotatable helicopter mast wherein the trunnion head has a control bar pivot supported by the trunnion head and pivotal about an axis substantially at a right angle to the helicopter mast. A control bar extends through the control bar pivot at a right angle thereto, and a pair of opposing leaf hinges are pivotal about the control bar and centered about said trunnion head. Each leaf hinge has a hinge plate extending from the control bar and defines a rotor blade mount hole therethrough.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: March 7, 2017
    Inventor: Karen Cupp
  • Patent number: 9499262
    Abstract: A composite flexure that secures a rotor blade to a gimbaled yoke in a tiltrotor rotor system. The composite flexure includes a composite flexure member, a first end, and a second end. The first end of the composite flexure couples the composite flexure to the gimbaled yoke, and the second end of the composite flexure couples the composite flexure to the rotor blade. The composite flexure is twisted when the composite flexure is not subject to torsional loads in order to accommodate various forces imparted on the rotor system.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: November 22, 2016
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Christopher Foskey, Frank B. Stamps, Joel McIntyre, Gary Miller
  • Patent number: 9376916
    Abstract: A method of making a platform of a blade includes the steps of creating two platform sections by solidifying a material with a fabric in a mold and positioning a band of fabric around the two platform sections to retain an airfoil and define a blade. The method further includes the step of bonding the two platform sections together by solidifying the material to define a platform of a solid material. The platform is not bonded to the airfoil.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: June 28, 2016
    Assignee: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Gregory H. Hasko, Michael G. Abbott
  • Patent number: 9284946
    Abstract: A windmill is disclosed having over speed protection. In a preferred embodiment, the vanes are symmetric, curved metal sheets, with each vane's shape having a circular arc corresponding to its portion of the cylindrical support structure. Each vane is mounted with a large leading portion exposed to the wind. The imbalance of surface area causes the wind to push the vane open when moving downwind and push the vane closed when moving upwind. During periods of high rotational speed, the off-axis centers of mass cause each vane to rotate towards a closed position under centrifugal force. Once the critical speed is reached, the vanes fully close as they pass through the upwind side.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 15, 2016
    Inventor: Kenneth B. Lane
  • Publication number: 20140377069
    Abstract: A pitch bearing assembly for a wind turbine having a stiffener is disclosed. The pitch bearing assembly may include an outer race and an inner race rotatable relative to the outer race. The inner race may define a mounting surface and an inner circumference. The mounting surface may extend generally perpendicular to the inner circumference. In addition, the stiffener may include a body and a mounting flange. The body may extend axially within a volume defined by the inner circumference of the inner race. Further, the mounting flange of the stiffener may be coupled to the mounting surface of the inner race.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventor: Adam Daniel Minadeo
  • Patent number: 8821121
    Abstract: A rotor assembly for a wind turbine includes a hub adapted to be carried by a shaft of the wind turbine, a plurality of prop arms extending from the hub, a plurality of blades carried by the plurality of prop arms, and a rotor speed regulating mechanism adapted to alter a pitch of the plurality of blades responsive to varying wind speeds, thereby regulating the speed of the plurality of blades.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: September 2, 2014
    Inventor: Mac E. Carter
  • Patent number: 8801378
    Abstract: A hub assembly for a tilt rotor includes a yoke having a plurality of yoke arms located substantially orthogonal to a central axis of the hub assembly. An inboard pitch change bearing assembly substantially surrounds a yoke arm of the plurality of yoke arms. An outboard pitch change bearing assembly is located at the yoke arm. The inboard pitch change bearing assembly and the outboard pitch change bearing assembly are operably connectable with a rotor blade to allow pitch change of the rotor blade relative to the yoke about a pitch change axis.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: August 12, 2014
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Bryan Kenneth Baskin, Todd David Walker
  • Publication number: 20140147276
    Abstract: A system for damping vibrations in a turbine includes a first rotating blade having a first ceramic airfoil, a first ceramic platform connected to the first ceramic airfoil, and a first root connected to the first ceramic platform. A second rotating blade adjacent to the first rotating blade includes a second ceramic airfoil, a second ceramic platform connected to the second ceramic airfoil, and a second root connected to the second ceramic platform. A non-metallic platform damper has a first position in simultaneous contact with the first and second ceramic platforms.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: General Electric Company
  • Patent number: 8721267
    Abstract: A pumping apparatus comprises a rotatable shaft coupled to a motor. At least one control structure is mounted on the shaft, and at least one impeller is carried by the shaft. The impeller is adapted to rotate independently of the shaft so as to pump a fluid. The apparatus also comprises a magnetic coupling between the control structure and the impeller. Further, the impeller is adapted to translate axially along the shaft in response to a change in downstream pressure to alter the strength of the magnetic coupling.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: May 13, 2014
    Assignee: Veeder-Root Company
    Inventors: Robert A. Moss, Jeremy R. Baillargeon, Joseph Tessitore
  • Patent number: 8695918
    Abstract: According to one embodiment, a rotor system comprises a yoke, a grip, an elastomeric bearing, and a bearing restraint. The grip is positioned around a portion of the yoke and has both a closed end and an open end. The elastomeric bearing is coupled to the closed end of the grip and located between the closed end and the yoke. The bearing restraint is coupled to the grip between the yoke and the open end at a distance from the closed end such that the yoke contacts the bearing restraint when the rotor system is subject to a first centrifugal force but does not contact the bearing restraint when the rotor system is subject to a second centrifugal force greater than the first centrifugal force.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: April 15, 2014
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Chad L. Jarrett, Frank B. Stamps, Mark Wiinikka, Scott Hemmen
  • Patent number: 8678758
    Abstract: An electrical submersible pump can include a housing with a head and a base; a shaft arranged for rotation within the housing; an impeller stack that includes ceramic impellers mounted along the shaft; a diffuser stack that includes diffusers disposed within the housing; and a spring sleeve that includes axially spaced and overlapping tangential slots, the spring sleeve mounted along the shaft to apply a compressive force between the shaft and the impeller stack. Various other devices, systems, methods, etc., are also disclosed.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: March 25, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Jacques Orban, Mihail Vladilenovich Gotlib
  • Patent number: 8641378
    Abstract: A present invention's object is to maintain a discharge performance by making a discharge flow rate constant in a low rotation region of an engine rotation speed and to reduce the discharge flow rate in a high rotation region. The present invention consists of a housing case, an impeller base provided with plural holes and plural elliptical elongated holes, a vane body provided with a rotary shaft on an inner peripheral side and a rocking shaft on an outer peripheral side, a plate cam in which an elongated groove is formed on an outer peripheral side of a disc portion and a single torsion spring. The spring and the plate cam are housed in the housing case and the impeller base. The rotary shaft is inserted rotatably into the holes, and the rocking shaft is movably inserted into the elliptical elongated holes and the elongated groove.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: February 4, 2014
    Assignee: Yamada Manufacturing Co., Ltd.
    Inventors: Song Fei, Masayuki Doki
  • Publication number: 20140023503
    Abstract: A damper unit includes a first damper arranged to transmit a torque around a rotation axis transmitted from an input member side to an output member side, an intermediate member arranged to transmit a torque around the rotation axis transmitted from the first damper to the output member side, and a second damper arranged to transmit a torque around the rotation axis transmitted from the intermediate member to the output member side, wherein at least a portion of the second damper is disposed on a straight line that passes through the first damper and is parallel or substantially parallel to the rotation axis.
    Type: Application
    Filed: June 3, 2013
    Publication date: January 23, 2014
    Inventors: Daisuke NAKAMURA, Tiharu MASUDA, Youhei KUROKI
  • Publication number: 20130189104
    Abstract: A resilient hub assembly comprises a top plate, bottom plate, central hub, and outer spars. The central hub is coupled between the top plate and the bottom plate. The outer spars are coupled between the top plate and the bottom plate, and the outer spars are positioned in a circular arrangement about a common longitudinal axis of the top plate and the bottom plate. The resilient hub assembly is configured to be flexible. The top plate and/or the bottom plate may comprise cutouts, and/or the outer spars may be positioned as to allow a gap between the central hub and the outer spars to promote flexibility.
    Type: Application
    Filed: January 24, 2013
    Publication date: July 25, 2013
    Applicant: DELTA T CORPORATION
    Inventor: DELTA T CORPORATION
  • Publication number: 20120230823
    Abstract: A rotor hub and method to dampen a force exerted on a rotor hub by a rotor blade during flight. The rotor hub including a central member rotatably coupled to a rotor mast, a blade grip rigidly attached to a blade and movably coupled to the central member, and an adjustable damper operably associated with the blade grip. The method includes damping the force exerted on the rotor hub with the adjustable damper and selectively adjusting the adjustable damper between a first spring rate and a second spring rate.
    Type: Application
    Filed: May 1, 2012
    Publication date: September 13, 2012
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Frank B. Stamps, Michael R. Smith, Christopher M. Bothwell, Lawrence M. Corso, James L. Braswell, JR., David A. Popelka, Ernst C. Schellhase, Charles L. Hollimon, Thomas J. Newman, Bryan Baskin, Thomas C. Campbell, Daniel B. Robertson
  • Patent number: 8235665
    Abstract: A sculpted throat spool of a tension-torsion strap assembly is disclosed. Using the sculpted throat spool minimizes the stress riser typically present at the edge of the spool when a tension-torsion strap is articulated.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: August 7, 2012
    Assignee: The Boeing Company
    Inventors: Neal W. Muylaert, Lyndon C. Lamborn
  • Publication number: 20120128490
    Abstract: A prestressing device extending about an axis between a first plane and a second plane, the first plane being located at a predetermined distance from the second plane, each plane being perpendicular to the axis. The device includes at least three deformation areas. The deformation areas extend in the first plane. The device further includes, between each deformation area, a planar contact surface extending in the second plane.
    Type: Application
    Filed: July 23, 2010
    Publication date: May 24, 2012
    Applicant: SNECMA
    Inventors: Eric Jacques Boston, Michel André Bouru, Laurent Jablonski, Philippe Gérard, Edmond Joly
  • Publication number: 20120061522
    Abstract: This invention uses a novel shape of airfoil to achieve an improved lift to drag ratio and to improve performance at higher angles of attack. The airfoil has a three dimensional wave pattern that modifies the shape of a traditional airfoil to coordinate the airflow through channels on both the top and bottom sides. The uniquely shaped airfoil of this invention could have many uses including a wind turbine blade. This invention not only provides for a more efficient device by improving the effective angle of attack and lift/drag ratio, but also provides for a quiet airflow thus greatly reducing nuisance noise over conventional devices.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 15, 2012
    Inventors: John Sullivan, Collin Robert Sullivan
  • Patent number: 8122586
    Abstract: A method for connecting a tension-torsion strap. The method includes sliding a sleeve into an arm of a hub; aligning holes in the sleeve with holes in the hub; installing a bushing in each aligned hole in the sleeve; sliding a first end of the tension-torsion strap through the sleeve; and placing a pin through the bushings and the tension-torsion strap.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: February 28, 2012
    Assignee: The Boeing Company
    Inventors: Neal W. Muylaert, Lyndon Claudius Lamborn
  • 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: 20110236209
    Abstract: The present invention relates to a damper (10) provided with an inner end strength member (20) and an outer end strength member (30) that are tubular and coaxial, a return member (40) being arranged between the inner end strength member (20) and the outer end strength member (30). The return member (40) includes an intermediate strength member (43) coaxial with the inner and outer end strength members (20, 30), said return member (40) having first and second return means (41, 42), said first return means (41) being arranged between the outer end strength member (30) and said intermediate strength member (43), said second return means (42) being arranged between the inner end strength member (20) and said intermediate strength member (43).
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Applicant: EUROCOPTER
    Inventors: Charles Louis, Matthieu Ferrant
  • Publication number: 20110211957
    Abstract: A wind turbine for use in a wide range of wind conditions is disclosed. The wind turbine uses blade pitch change and/or blade folding to accommodate wind conditions and maintain a substantially constant speed. The blades are configured to fold in unison for balanced wind turbine operation.
    Type: Application
    Filed: October 6, 2010
    Publication date: September 1, 2011
    Inventors: Mark Folsom, Curt Higgins
  • Publication number: 20110142642
    Abstract: A wind turbine includes a plurality of rotor blades, with each blade having a root portion connected to a rotor hub and an airfoil portion extending radially outward from the rotor hub. The airfoil portion further includes a main foil section and a winglet pivotally connected to the main foil section so as to pivot from an in-line position wherein the rotor blade has a first sweep length to an articulated position wherein the rotor blade has a second sweep length. In the articulated position, the winglet may pivot to not more than 90 degrees relative to a longitudinal axis of the main foil section. A deployable sleeve may be connected to the winglet so as to extend between the winglet and the main foil section in the articulated position of the winglet. The sleeve is stowable within either or both of the main foil section or the winglet in the in-line position of the winglet.
    Type: Application
    Filed: September 15, 2010
    Publication date: June 16, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Edward Lee McGrath, David Samuel Pesetsky, Jing Wang
  • Patent number: 7914258
    Abstract: The present teachings relate to a fluid mechanical converter having at least one energy-accumulator mass system that can be powered by a power drive. To provide a fluid mechanical converter, which improves overall efficiency using the simplest components, it is proposed according to the present teachings that the displacement of the driven energy accumulator-mass system is overlaid with a displacement that is caused by at least one inertial force.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: March 29, 2011
    Assignee: bionic motion GmbH
    Inventor: Robert Spillner
  • Patent number: 7850429
    Abstract: There is described a rotor for a helicopter, having a hub rotating about a first axis; a number of blades projecting from the hub in respective longitudinal directions lying in a plane crosswise to the first axis, and each connected to the hub so as to be movable at least about a second axis crosswise to the first axis and to the relative longitudinal direction; and a number of damping devices for damping vibration of the helicopter, each interposed between a respective blade and the hub; each damping device has a plate member fixed, on one side, to the hub, elastically connected, on the opposite side, to the relative blade, and flexible, during movement of the blade, about a third axis coaxial with the second axis.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: December 14, 2010
    Assignee: Agusta S.p.A.
    Inventor: Santino Pancotti
  • Publication number: 20100308155
    Abstract: A helicopter rotor include a blade, a rotor hub which supports the blade, and a lead-lag angle mechanism configured to change a lead-lag angle of the blade, in synchronization with a rotation of the rotor hub. The lead-lag angle mechanism changes the lead-lag angle of the blade such that a circumferential speed of a blade tip of the blade (3) is slow on a forward side and fast on a backward side. Accordingly, a helicopter, a helicopter rotor, and a control method of helicopter that enable high speed flight are provided.
    Type: Application
    Filed: January 9, 2009
    Publication date: December 9, 2010
    Inventor: Masahiro Nakao
  • Patent number: 7845909
    Abstract: An assembly for providing flexure to a blade of a rotary blade system includes an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween. At least one of the upper and lower yoke surfaces has a layer of cushioning material positioned thereon and secured thereto. An alternate embodiment includes an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween and directly contacting the support plates wherein one of the curved surfaces is a non-circular arc that does not form part of the circumference of a circle. Another alternate embodiment includes a similar assembly having a twist-shank type of yoke for providing rotation of attached blades about their respective pitch axes.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: December 7, 2010
    Assignee: Textron Innovations Inc.
    Inventors: Frank B. Stamps, Patrick R. Tisdale, Paul Sherrill, Richard Rauber, Thomas C. Campbell, James Lee Braswell, Jr., Ron Measom, Tricia Hiros, David Popelka, Michael J. Southerland, Keith Stanney, Mark Wasikowski, Tim Ledbetter
  • Publication number: 20100221112
    Abstract: An airborne centrifugally stiffened and cyclically controlled system which uses airfoils which rotate around a central hub, similar to the mechanics of an autogyro. The airfoils may achieve speeds significantly above the wind speed feeding the system. The airfoils may be linked to the central hub by flexible radial tethers which stiffen considerably as the speed of the airfoil increases, or may be linked to the central hub by rigid radial links. The central hub may be linked to the ground with an extendible main tether. Power generation turbines may reside on the airfoils and utilize the high apparent wind speed for power generation. The generated power may travel down the radial tethers and across a rotating power conduit to the main tether and to the ground. The system may use autorotation, similar to the mechanics of an autogyro.
    Type: Application
    Filed: September 25, 2009
    Publication date: September 2, 2010
    Inventors: JOEBEN BEVIRT, Lan Kroo
  • Publication number: 20100215496
    Abstract: A rotor for a helicopter, having a drive shaft rotating about a first axis; a hub angularly integral with the drive shaft about the first axis; and at least two blades projecting from the hub on opposite sides of the first axis and elongated along respective second axes crosswise to the first axis; each blade is movable with respect to the hub and to the other blade about a respective third axis crosswise to the respective second axis; the rotor has at least two dampers for damping oscillation of respective blades about the respective third axes, and which have respective first portions movable integrally with the respective blades about the respective third axes; and the dampers have respective second portions connected elastically to the respective first portions and functionally to each other.
    Type: Application
    Filed: February 23, 2010
    Publication date: August 26, 2010
    Inventors: Fabio Nannoni, Dante Ballerio, Pierre Abdel Nour, Attilio Colombo
  • Patent number: 7780409
    Abstract: Rotor apparatus and methods for vertical lift aircraft are disclosed. In one embodiment, a bearing assembly adapted for rotatably coupling a rotor blade to a support member includes an inner housing annularly disposed about a portion of the support member, an outer housing annularly disposed about at least part of the inner housing and is rotatably coupled to the inner housing by an annular bearing device, and a flexible member adapted to be coupled to the support member and including an engagement portion adapted to engage the outer housing and to at least partially relax a side force exerted on the annular bearing device by a bending of at least one of the rotor blade and the support member.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: August 24, 2010
    Assignee: The Boeing Company
    Inventor: Max U. Kismarton
  • Publication number: 20100135805
    Abstract: Described herein is a rigid rotor assembly configured to allow rotation of helicopter rotor blades attached to the rigid rotor assembly from a deployed position to a stowed position. The rigid rotor assembly includes a base including a shaft extending therethrough, a first spindle configured to engage the shaft, and a second spindle configured for placement onto the shaft. The second spindle is operable to maintain a first position with respect to the first spindle via an attachment mechanism therebetween, the second spindle further operable to maintain a second position with respect to the first spindle via the attachment mechanism.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 3, 2010
    Inventors: Neal W. Muylaert, Lyndon Claudius Lamborn, Mark Stephen Durst
  • Publication number: 20100124501
    Abstract: An apparatus may comprise a housing, a first member, and a second member. The housing may have a first end, a second end, a first side, a second side, an opening located in the first end, and a passage extending from the opening. The first member may extend from the first side. The first member may have a first channel in communication with the passage and the channel has a first center axis. The second member may extend from the first side. The second member may have a second channel in communication with the passage and the second channel has a second center axis substantially aligned with the center axis of the channel in the first member.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 20, 2010
    Inventors: Neal W. Muylaert, Lyndon Claudius Lamborn
  • Patent number: 7717678
    Abstract: A propeller assembly is provided for mounting on a propeller shaft of a watercraft. The propeller assembly includes a housing structure having a plurality of blades projecting radially therefrom. A bushing assembly translates rotational movement of the propeller shaft to the housing structure. The bushing assembly includes a spindle having an inner surface that meshes with the outer surface of a propeller shaft and a resilient bushing molded over the spindle. A plurality of spaced, longitudinally extending keys extend along the outer surface of the spindle. In the event that the propeller blades become fixed during operation of the watercraft, the keys fragment from the outer surface of spindle so as to disengage the spindle from the housing structure. In such manner, damage to the engine and to the drive system of the marine vehicle may be avoided.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: May 18, 2010
    Assignee: Turning Point Propellers, Inc.
    Inventor: Liheng Chen
  • Publication number: 20100104435
    Abstract: The invention relates to an underwater power plant, comprising a propeller-shaped water turbine in horizontal rotor configuration with a plurality of rotor blades which are fastened to a revolving unit, with each rotor blade being associated with a swivel axis which extends substantially along the respective rotor blade, with the rotor blades being arranged elastically about the swivel axis at least in sections of the longitudinal extension concerning a torsion and/or the fastening of the rotor blades to the revolving unit enabling a rotation of the rotor blades about the swivel axis, and the position of the swivel axis is chosen relative to the profile shape of the rotor blades in such a way that hydrodynamic forces acting during operation on the rotor blade generate a moment which is directed in the feathered pitch position and the centrifugal forces originating during the rotation cause restoring centrifugal moments on the rotor blade against the feathered pitch position.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 29, 2010
    Inventors: Raphael Arlitt, Ralf Starzmann
  • Patent number: 7665969
    Abstract: An assembly for providing flexure to a blade of a rotary blade system, the assembly including an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween. At least one of the upper and lower yoke surfaces having a layer of cushioning material positioned thereon and secured thereto. The layer of cushioning material extending along and following the general contour of yoke surface, and the layer of cushioning material directly contacting a support plate. Another embodiment is an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween and directly contacting the support plates wherein one of the curved surfaces is a non-circular arc that does not form part of the circumference of a circle.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: February 23, 2010
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Frank B. Stamps, Patrick R. Tisdale, James L. Braswell, Charles L. Baskin, Jr., Tom Campbell, Timothy K. Ledbetter, Joseph J. Zierer, D. J. Reddy, Mark A. Wiinikka, Ronnie L. Martin, David A. Haynie, Stanley Gene Sadler, Ron Measom, Paul Oldroyd, Tricia Hiros, Jim Harse, Bob Mullins
  • Publication number: 20090180881
    Abstract: A ceiling fan is disclosed having a blade iron mounting system (14) coupled to the bottom mounting plate (15) of an motor (13). The blade iron mounting system includes an annular mounting plate (24), an annular array of blade iron anti-rotation blocks (25), and an annular array of blade irons (26) having a blade (27) coupled thereto. The mounting plate also includes an annular array of inner five pulley mounts and an annular array of outer five pulley mounts (29). The blade iron is allowed to move radially relative to the mounting plate. A blade iron five pulley mount (49) is coupled to blade iron mounting hole (45). Lastly, a series of five cables (50), equal in number to the number of blade irons, is interwoven between a number of inner pulley mounts (28), outer pulley mounts (29) and blade iron pulley mounts (49).
    Type: Application
    Filed: January 15, 2008
    Publication date: July 16, 2009
    Inventor: Charles Botkin
  • Publication number: 20090148288
    Abstract: A horizontal axis wind turbine apparatus includes a turbine assembly comprising a generator mounted in a housing, a rotor operative to rotate the generator in response to wind forces, and a tail extending rearward from the housing, and a base adapted to be mounted on a tower. The housing is pivotally attached to the base about a horizontal pivot axis oriented substantially perpendicular to a rotational axis of the generator and located rearward of a center of gravity of the turbine assembly such that the housing can pivot upward about the pivot axis from a lowered position to a raised position. A spring is operative to exert a downward bias force on the housing to urge the housing toward the lowered position.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 11, 2009
    Inventors: Darryl Jessie, Dave A. Cote
  • Patent number: 7510366
    Abstract: A vertical axis type wind power station and a blade manufacturing process, which can stabilize the turning motions of blades and can raise the power generation efficiency by lightening the blades to smoothen the turning motions of the blades; a structure and method for mounting the wind-driven device of a wind power station, by which the wind-driven device can be easily disposed at the upper portion of a building; and a windbreak wind power plant for breaking the wind by using the vertical axis type wind power stations or wind-driven devices arranged along the shoreline or the like.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: March 31, 2009
    Assignee: Shinko Electric Co., Ltd.
    Inventors: Kazuo Okubo, Kazumichi Kato, Hirosuke Imabayashi, Toshio Miki, Hideki Tamura, Hiroo Mike, Akira Shiozaki, Yushi Sato, Tomoyuki Matsunaga, Tetsuyuki Kimura, Nobuhiro Saito, Hiroki Kataoka
  • Publication number: 20090060742
    Abstract: A rotor head includes a hub and two joint members. The hub has opposite tubular end portions, each formed with a socket that extends inwardly from an end face thereof along a tube axis and that has inner and outer socket sections. Each of the joint members includes a link and a vibration absorbing component. The link has a hub coupling segment retained rotatably in the inner socket section of a respective socket, an intermediate segment extending from the hub coupling segment and disposed movably in the outer socket section of the respective socket, and a blade coupling segment extending from the intermediate segment and outwardly of the outer socket section. The vibration absorbing component is mounted on the intermediate segment, and is disposed in the outer socket section.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Inventor: Charles Lin
  • Patent number: 7488225
    Abstract: A propeller for a boat includes a propeller shaft having a shaft hole, a shaft sleeve mounted in the shaft hole of the propeller shaft and provided with a metal core with a through hole for insertion of a driving shaft of the boat, and a shock-absorbing member covering an outer surface of the metal and having an outer surface contacted with an inner surface of the propeller shaft that surrounds the shaft hole; and a lock unit mounted on the driving shaft for fixing the driving shaft in the through hole of the shaft sleeve, so that the propeller is rotatable by the driving shaft. When the propeller bumps hard things during rotation to result in vibration to the propeller, the shock-absorbing member can absorb the vibration so as to protect the driving shaft from damage.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: February 10, 2009
    Inventor: Yeun-Junn Lin
  • Patent number: 7296975
    Abstract: A twist element for a bearingless rotor is made mostly of composite fiber material and has a cross section with a substantially symmetric, flattened shape that has approximately the contour of a horizontal, central section of a double cone. In addition, a bearingless rotor having at least one such twist element, and a rotorcraft, particularly a helicopter, having at least one rotor with at least one such twist element are provided.
    Type: Grant
    Filed: December 13, 2003
    Date of Patent: November 20, 2007
    Assignee: Eurocopter Deutschland GmbH
    Inventors: Ulrich Denecke, Gerald Kuntze-Fechner, Horst Bansemir, Stefan Emmerling
  • Patent number: 7172392
    Abstract: A wind turbine with at least one blade having a pitch axis that is offset laterally so that the blade does not intersect with an axis of rotation of the wind turbine, and a center of mass and an aerodynamic center are offset from the pitch axis in the direction parallel to the axis of rotation of the wind turbine. The blade is arranged so that the blade can pitch towards stall against the action of a resilient device and also so that the centrifugal loading on at least one of the blade and one or more components optionally attached to the blade, acts against the spring in a direction to shed power by pitching the blade towards stall and also so that the torque loading provided by a power conversion device acts to pitch the blade in the opposite direction, so as to reduce the amount of load shedding whenever the power is being extracted from the wind turbine.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: February 6, 2007
    Assignee: Iskra Wind Turbine Manufacturers Ltd.
    Inventors: Michael Andrew Wastling, John Charles Balson, David Irving, Robert James Cann
  • Patent number: 7063125
    Abstract: A fan penetration fixture consisting of a threaded shaft and a lock nut design. The fixture is designed to take the place of the fan clutch on a fan drive assembly in the vehicle being tested for a desired cooling system performance characteristic at each possible fan penetration. The threaded shaft portion of the fixture bolts to the fan hub. The desired fan is then bolted to the lock nut portion of the fixture. The lock nut can be positioned at any point along the threaded shaft to achieve a desired fan penetration.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: June 20, 2006
    Assignee: BorgWarner Inc.
    Inventors: Thomas Tembreull, Benjamin Sprygada
  • Patent number: 7044457
    Abstract: A mount with replaceable load bearing and rebound members is provided. The mount comprises a housing that defines a first chamber and a second chamber; a load bearing member removably located in said first chamber, said load bearing member comprising a load bearing member contact portion; a rebound member removably located in said second chamber, said rebound member having a rebound member contact portion, the contact portions of the load bearing member and rebound member being in abutment when the members are removably located in the chambers; and means for coupling said load bearing member and rebound member.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: May 16, 2006
    Assignee: Lord Corporation
    Inventor: James H. Bucksbee
  • Patent number: 7033140
    Abstract: A rotor blade for a rotor assembly is provided that includes a root, an airfoil, and a damper. The airfoil includes a base, a tip, a pressure side wall, a suction side wall, and at least one cavity disposed therebetween, and a channel. The damper is selectively received within the channel. The channel is disposed within the cavity between a first wall portion and a second wall portion. At least one of the first wall portion and the second wall portion includes a plurality of raised features extending outwardly from the wall into the channel. The features are spaced apart from one another. The raised features extend between the damper and the wall portion from which they extend outwardly. A plurality of tortuous flow passages are formed between the damper, the respective wall portion, and the raised features extending therebetween.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: April 25, 2006
    Assignee: United Technologies Corporation
    Inventor: Shawn J. Gregg