With Weight-balancing Means Patents (Class 416/144)
  • Patent number: 10981647
    Abstract: The present invention includes a rotor-blade span-balancing system, including a span-balance pocket in a surface of a rotor blade; a cover operably configured to cover the span-balance pocket, wherein the cover is operably configured to be substantially flush with the surface of the rotor blade surface when covering the span-balance pocket, and wherein the cover includes a cover boss for reacting centrifugal force of the cover into the rotor blade; and one or more span-balance weights attached to the cover to span-balance the rotor blade.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: April 20, 2021
    Assignee: BELL HELICOPTER TEXTRON INC.
    Inventors: Robert Self, Nathan P. Green, John R. McCullough, Russell Cole, Paul Sherrill, Robert Wardlaw
  • Patent number: 10975720
    Abstract: The invention relates to a balancing system of an aircraft turbomachine comprising a first annular row of first mounting ports for mounting balancing members, and a second annular row of second mounting ports for mounting balancing members which is axially offset from the first annular row, the number and angular positions of the first mounting ports being identical to the number and angular positions of the second mounting ports.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: April 13, 2021
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Nadège Pauline Audrey Hugon, Thomas Giraudeau, Jean-Marc Claude Perrollaz, Baptiste René Roger Batonnet, Romain Nicolas Lagarde
  • Patent number: 10920598
    Abstract: A cover plate for maintaining axial alignment between a blade assembly and a rotor disk and transferring centrifugal loading directly to the rotor disk. The cover plate comprises a plate key extending axially from an elongate member, the plate key configured to engage a keyway of the rotor disk assembly and/or a notch of the blade key.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: February 16, 2021
    Assignee: Rolls-Royce Corporation
    Inventors: Michael R. Whitten, Brandon Snyder, James Sellhorn
  • Patent number: 10883370
    Abstract: A balancing assembly for a rotating component of a gas turbine engine includes a balance weight configured for insertion into a complimentary balance weight slot in the rotating component. The balance weight has a dovetail shaped cross-section and the balance weight slot has a complimentary dovetail shaped cross-section. A retaining ring configured for installation to the rotating component axially retains the balance weight in the balance weight slot. A method of correcting an imbalance of a rotating assembly includes inserting a balance weight into a balance weight slot in a rotating component of the rotating assembly, and installing a retaining ring at the rotating component to retain the balance weight in the balance weight slot in an axial direction. The balance weight has a dovetail shaped cross section, and the balance weight slot has a complimentary dovetail shaped cross section to retain the balance weight at the balance weight slot.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: January 5, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Nicholas Waters Oren, Ross Wilson
  • Patent number: 10823187
    Abstract: A method for producing a centrifugal pump impeller having a base plate, which is a single piece with pump blades and a cover plate, which consists of a thermoplastic material, wherein contact areas are available, which are heated and melted by means of ultrasonic excitation and form a close bonded connection after cool-down. The objective of the invention is to ensure inherent stability with the individual parts and a simple and reliable pre-assembly as well as a fixed mechanical connection, wherein only a small amount of excitation energy is required, with a centrifugal pump impeller comprising a base plate and cover plate.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: November 3, 2020
    Assignee: BÜHLER MOTOR GMBH
    Inventor: Harald Rausch
  • Patent number: 10807705
    Abstract: In one embodiment, a rotor blade may comprise a blade body, a spar structure, and a blade nose. The blade body may comprise a skin, wherein the skin is configured to form an airfoil shape, and wherein the airfoil shape comprises an inboard end, an outboard end, a leading edge, and a trailing edge. The spar structure may comprise a first spar cap and a second spar cap, wherein the first spar cap is coupled to an upper portion of the skin, and wherein the second spar cap is coupled to a lower portion of the skin. The blade nose may comprise a cavity, wherein the cavity is configured to house a plurality of modular weights at a plurality of radial blade locations, wherein the plurality of radial blade locations comprises a range of locations between the inboard end and the outboard end.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: October 20, 2020
    Assignee: BELL HELICOPTER TEXTRON INC.
    Inventors: Drew A. Sutton, Mark E. Wasikowski, Andrew Ryan Maresh, Nolan B. Phillips
  • Patent number: 10598017
    Abstract: A method of identifying the balancing configuration installed on a turbine engine rotor using a plurality of screws forming balance weights that are mounted on the rotor at different angular positions of the rotor is provided. Each screw possesses a predetermined weight and each screw is associated with an element for identifying its weight and for identifying its angular position on the rotor. The method includes contactless scanning of all of the screws mounted on the rotor by an identification appliance capable of recognizing the elements for identifying the weight and the angular position associated with each screw.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: March 24, 2020
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Valerio Gerez, Francois Prost
  • Patent number: 10519970
    Abstract: A compressor blade locking device can include: a first support including a first locking groove; a second support including a left groove and a first protrusion corresponding to the first locking groove; a third support including a second locking groove; a fourth support including a right groove and a second protrusion corresponding to the second locking groove; a center support disposed between the second support and the fourth support; and a tab disposed in the center support, wherein the tab is configured to be turned such that the tab is disposed in the left groove and the right groove.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: December 31, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Matthew Montgomery, Iurii Goroshchak, Joohwan Kwak
  • Patent number: 10436224
    Abstract: A turbomachinery rotor apparatus includes: a rotatable disk having an array of slots spaced around its periphery; an array of blades installed in the slots, wherein the blades have variable weights; and a plurality of connection components installed in the disk, each connection component forming a portion of a mechanical joint between one of the blades and its respective slot, wherein the connection components have variable weights.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 8, 2019
    Assignee: General Electric Company
    Inventors: Michael Jason Bishop, Kevin Lee Kirkeng
  • Patent number: 10428835
    Abstract: A fan of the invention includes an impeller having a plurality of blades and rotating around a rotation axis, and at least one balance weight having at least one claw portion and attached to the impeller to correct the center of gravity of the impeller. The impeller has a circumferential convex portion formed along the circumferential direction, and on which the claw portion is hooked to restrict a range of movement of the balance weight in the radial direction of the impeller, and at least one radial concave-convex portion formed along the radial direction, and on which the claw portion is hooked to restrict the range of movement of the balance weight in the circumferential direction of the impeller.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: October 1, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Makoto Kurihara
  • Patent number: 10422024
    Abstract: A nickel-base superalloy consisting of, by weight: 14.6% to 15.9% cobalt; 11.5% to 13.0% chromium; 0.8% to 1.2% iron; 0.2% to 0.60% manganese; 2.00% to 2.40% molybdenum; 3.30% to 3.70% tungsten; 2.90% to 3.30% aluminum; 2.60% to 3.10% titanium; 3.50% to 5.10% tantalum; 1.20% to 1.80% niobium; 0.10% to 0.60% silicon; 0.02% to 0.06% carbon; 0.010% to 0.030% boron; 0.05% to 0.11% zirconium; up to 0.045% hafnium; and the balance being nickel and impurities.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: September 24, 2019
    Assignee: ROLLS-ROYCE plc
    Inventors: Mark C Hardy, Roger C Reed, David Crudden
  • Patent number: 10415424
    Abstract: A balanced turbomachine part including one angular sector arranged to form a balancing ring centered about a ring axis. The angular sector includes a plurality of fasteners, a bearing face having a complementary shape to the balancing ring, the angular sector bearing on the bearing face. The part further includes a plurality of balancing masses each fastened to the corresponding fastener of the angular sector, at least one of the balancing masses also acting as a fastener for fastening the angular sector on the bearing face.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: September 17, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Jean-Luc Le Strat, Herve Pohier
  • Patent number: 10400793
    Abstract: The present invention relates to a balance structure of a fan, which comprises a hub and a balance slider. The hub has a circumferential portion and a top portion. The circumferential portion has a plurality of blades. The top portion is provided with a groove having a latch portion. The balance slider has a receiving portion slidingly engaging with the latch portion such that the balance slider can be slidingly disposed in the groove and the balance slider can move to a balance position automatically during the rotation of the hub. In this way, the effect of automatic balance can be achieved.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: September 3, 2019
    Assignee: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Chung-Shu Wang
  • Patent number: 10371172
    Abstract: Turbochargers operate at extremely high speed, so balance of the rotating core is of the utmost importance to turbocharger life. A special balancing washer is added to the clamping region between the compressor nut and the nose of the compressor wheel to aid in keeping the wheel, nut, and stub-shaft on the turbocharger axis and to thereby prevent introduction of core unbalance.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: August 6, 2019
    Assignee: BorgWarner Inc.
    Inventor: Denny King
  • Patent number: 10364822
    Abstract: A fan blade is mounted on a shaft or arranged to vary in pitch via rotation about a pitching axis. The fan blade is mounted with a center of mass offset from the shaft or pitching axis. This offset reduces torque around the shaft or pitching axis.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: July 30, 2019
    Assignee: FLEXXAIRE INC
    Inventors: Jonathan E. McCallum, George Antoszko, Peter Knight
  • Patent number: 10364688
    Abstract: A minidisk for a rotor system may comprise a balance flange defining a hole array, which may include a first hole having a first width. The first hole may be configured to receive a balance weight. A second hole and a third hole may have a second width. The second hole and the third hole may be disposed adjacent to the first hole. The second width may be greater than the first width.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: July 30, 2019
    Assignee: United Technologies Corporation
    Inventors: Raymond S Hummel, Steven D Porter, Julian Partyka
  • Patent number: 10359750
    Abstract: The present disclosure provides a frequency control method for a micro-grid and a control device. The method includes: determining a middle parameter at iteration k; determining a local gradient parameter at iteration k according to the cost increment rate at iteration k, the frequency difference between iterations k and k+1, and communication coefficients; performing a quasi-Newton recursion according to the middle parameter and local gradient parameter to acquire a recursion value; determining the cost increment rate at iteration k+1 according to the recursion value; determining an adjustment value of an active power according to the cost increment rate at iteration k+1; adjusting the active power according to the adjustment value if the adjustment value satisfies a constraint condition and judging whether the difference is smaller than a predetermined threshold; executing k=k+1 if yes and stopping the frequency control if no.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: July 23, 2019
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Wenchuan Wu, Boming Zhang, Hongbin Sun, Zhongguan Wang, Qinglai Guo, Bin Wang
  • Patent number: 10344610
    Abstract: A turbomachine module, comprising a mobile wheel rotatably mounted inside a housing of the module and surrounded by a sectorised sealing ring (18) that comprises an annular row of sectors, each ring sector comprising at least one circumferential hook that is configured to engage with an annular hooking rail of the housing, the module further comprising a sectorised protective annular shim (50) that is interposed between the hooks of the ring sectors and the rail of the housing and that comprises an annular row of sectors of shim, characterised in that the edges (60) of the circumferential ends of the sectors of shim are not aligned with the edges (58) of the circumferential ends of the ring sectors along the longitudinal axis of the module.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: July 9, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Cyril Loiseau, Alain Dominique Gendraud, Sebastien Jean Laurent Prestel
  • Patent number: 10233758
    Abstract: A rotor blade comprises a blade platform and an airfoil. The airfoil comprises a blade tip, a leading edge, and a trailing edge with a stiffening compound lean contour. The blade tip is radially opposite the blade platform, and defines a blade span between the blade itself and the blade platform. The leading and trailing edges extend from the blade platform to the blade tip to define blade chords between the leading edge and the trailing edge. The compound lean contour comprises a positive lean section located at the lean tip, and extending along a lean axis to a lean end. The negative lean section is located radially inward of the positive lean section, and extends along the lean axis to the lean end.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: March 19, 2019
    Assignee: United Technologies Corporation
    Inventors: Loc Quang Duong, Xiaolan Hu, Gao Yang, Jesus A. Garcia, Dan G. Sapiro
  • Patent number: 10228042
    Abstract: There is provided a vibration damper which is capable of damping torsional vibrations by pendulum movement of a plurality of inertial masses, and damping vibrations of plurality of order without letting the inertial masses to interfere. A distance between a center of curvature of an inner surface of a first through-hole and a center of curvature of an inner surface of a second through-hole formed in a rotary member is shorter than a distance between a center of curvature of an inner surface of a fifth through-hole and a center of curvature of an inner surface of a sixth through-hole formed in a first inertial mass. Moreover, a distance between a center of curvature of an inner surface of a third through-hole and a center of curvature of an inner surface of a fourth through-hole in a rotary member is longer than a distance between a center of curvature of an inner surface of a seventh through-hole and a center of curvature of an inner surface of an eighth through-hole formed in a second inertial mass.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: March 12, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuhei Horita, Fusahiro Tsukano, Morihiro Matsumoto, Hiroyuki Amano, Tadashi Sekiguchi, Yuya Takahashi, Taiki Nakamura
  • Patent number: 10215027
    Abstract: An airfoil includes, among other possible things, a main body extending between a leading edge and a trailing edge. Channels are formed into the main body, with a plurality of ribs extending intermediate the channels. A cover skin is attached to the main body. The cover skin is welded to the main body with a weld at outer edges. An adhesive is placed between inner surfaces of the cover skin and the main body. The adhesive is deposited inwardly of the outer edges of the cover skin. A method of constructing an airfoil is also disclosed as is a gas turbine engine.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: February 26, 2019
    Assignee: United Technologies Corporation
    Inventors: Frederick M. Schwarz, Michael A. Weisse
  • Patent number: 10180146
    Abstract: An impeller of an axial fan includes a cup-shaped blade support portion configured to cover a rotor holder, and blades in a circumferential direction outside of the blade support portion. Rotation of the impeller generates a downward air flow from the inlet to the outlet. The axial fan includes first and second balance correction portions. The first balance correction portion is located between the blade support portion and the rotor holder. The second balance correction portion is located axially below the first balance correction portion, and is located axially below the rotor holder and a junction of each blade with the blade support portion. The impeller includes a first cone portion located axially below the second balance correction portion, and decreases in diameter with decreasing height. The impeller includes a cylindrical portion including a cylindrical outer circumferential surface and located between the first cone portion and the second balance correction portion.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: January 15, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Ryota Hayashida, Tsukasa Takaoka
  • Patent number: 10087785
    Abstract: A tie rod assembly for a mid-turbine frame includes at least one tie rod for connecting an outer frame case to an inner frame case. At least one tie rod includes an inlet passage that branches into a first branch and a second branch. A plug is located in the first branch to block flow through a portion of the first branch.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: October 2, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Alexander Broulidakis, Anthony P. Cherolis, Jonathan Lemoine, Kalpendu J. Parekh, Steven W. Trinks, Christopher Treat, Kevin Zacchera, Alberto A. Mateo
  • Patent number: 10024237
    Abstract: An air inlet deflector for a structure having an air inlet. The deflector may be retractable within the structure, may be integrally formed with the structure, and may prevent the structure from ingesting foreign matter, such as birds. The deflector may include a series of ribs, spokes, or vanes that may vary in width and/or thickness from fore to aft, and/or may be curvilinear in one or more planes of view, and/or may serve double duty as inlet vanes for redirecting inlet air.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: July 17, 2018
    Inventor: Michael J Kline
  • Patent number: 10018186
    Abstract: Wind turbines are provided comprising a support structure having a tower and a nacelle mounted on the support structure. A first region (damper region) of the wind turbine including at least a first part of the nacelle is flexibly coupled to a second region (to be damped) of the wind turbine including at least the support structure. Methods are also provided for determining a suitable stiffness of the flexible coupling of the damper region to the region to be damped of any one of said wind turbines. These methods comprise determining a modal mass of the region to be damped depending on a given tower bending mode; and determining the stiffness of the flexible coupling of the damper region to the region to be damped depending on the calculated modal mass of the region to be damped and on the mass of the damper region.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: July 10, 2018
    Assignee: GE Renewable Technologies Wind B.V.
    Inventors: Roger Bergua, Jordi Jové
  • Patent number: 9945354
    Abstract: A wind turbine blade includes a first shell member including a first mating surface along a first edge of the wind turbine blade. Also, the wind turbine blade includes a second shell member including a second mating surface along the first edge of the wind turbine blade, wherein the second mating surface is opposite to the first mating surface. Further, the wind turbine blade includes a bonding material disposed between the first mating surface and the second mating surface and configured to bond the first mating surface to the second mating surface. Moreover, the wind turbine blade includes a constrainer positioned at a desired bond line and coupled to one of the first mating surface and the second mating surface, wherein the constrainer is configured to restrict the bonding material from migrating into an interior cavity of the wind turbine blade.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: April 17, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Sultan Shair, Thomas Merzhaeuser, Mohammad Salah Attia
  • Patent number: 9926081
    Abstract: An aircraft turbopropeller includes two coaxial contra-rotating unducted propellers, upstream and downstream respectively, each propeller including an annular row of blades. The blades of the downstream propeller have a reverse sweep in relation to that of the blades of the upstream propeller. The leading edges of the blades of the downstream propeller extend radially outwards from downstream to upstream, at least over a radially outer portion of the blades.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: March 27, 2018
    Assignee: SNECMA
    Inventor: Jonathan Vlastuin
  • Patent number: 9909558
    Abstract: Methods for installing blades of a wind turbine are provided. The method comprises: providing a blade holder, wherein the blade holder comprises a connection element adapted to be attached to a mounting surfaces and a lifting equipment attachment, the blade holder being provided with a steering mechanism. Then, the blade holder is attached to the blade. The blade holder is hoisted with the blade towards the rotor hub with lifting equipment. The blade holder is attached to the mounting surface of the hub using the connection element. The rotor hub is rotated using the weight of the blade holder and the blade to a first desired position for mounting the blade to the rotor hub. The blade holder is detached from the hub. Then, the blade may be mounted to the rotor hub. A wind turbine blade holder for holding a blade and for use in lifting the blade is also provided.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: March 6, 2018
    Assignee: ALSTOM Renewable Technologies
    Inventor: Isaac Gil Mollà
  • Patent number: 9890652
    Abstract: A rotating assembly for a turbine engine, comprising a disc having an outer periphery having alternating slots and teeth, blades radially extending from the disc and roots of which are axially engaged in the slots, with spaces called slot cavities being provided between the roots of the blades and the slots, platforms laterally extending from the blades and circumferentially arranged end-to-end, so as to form spaces called inter-blade cavities, and a downstream annular shroud, comprising an outer annular sealing lip opposite the downstream ends of the platforms. The downstream shroud further comprises an intermediate annular sealing lip opposite the downstream faces of the teeth of the disc, radially between the slot cavities and the inter-blade cavities.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: February 13, 2018
    Assignee: SNECMA
    Inventors: Maurice Guy Judet, Pierre Guillaume Auzillon, Matthieu Simon
  • Patent number: 9890763
    Abstract: Counterweight system for a wind turbine comprising a hub mounted to a nacelle such that the hub is rotatable around a rotation axis with respect to the nacelle. The counterweight system comprises: a mechanical unit comprising a fixed part and a rotatable part, the fixed part being mountable to the hub in such a way that the rotatable part is rotatable with respect to the hub substantially around the rotation axis of the hub; a drive unit for causing rotation of the rotatable part; a beam coupled to the rotatable part at a first point of the beam in such a way that the beam is arranged substantially perpendicular to the rotation axis of the hub; and a counterweight mass coupled to the beam at a second point of the beam. A method of mounting a blade to a hub by using said counterweight system is also provided.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: February 13, 2018
    Assignee: ALSTOM Renewable Technologies
    Inventors: Santiago Canedo Pardo, Javier Bescos
  • Patent number: 9879698
    Abstract: A shaft balancing assembly comprising a nose cone and a plurality of balance weights. The nose cone is mounted to a rotatable shaft of a turbine machine via a plurality of elongated fasteners such that a central axis of the nose cone is alighted with the rotatable shaft. The nose cone comprises a flange extending axially from a leading tip to a trailing edge and a plurality of apertures each adapted to receive a balancing weight and an elongated fastener. The nose cone flange is formed from a filament wound composite material and has a uniform thickness.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: January 30, 2018
    Assignee: ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES INC.
    Inventors: Graham Burkholder, Daniel Molnar, Jared Schneider, Matt Kappes
  • Patent number: 9803654
    Abstract: The invention includes a disc-shaped disc section (30) that is attached to a rotating shaft (6), and blade sections (40) that are provided on a front surface (31) that is one side in an axial direction of the disc section (30). Balance holes (33) for attaching weight-adjusting weight members W thereto are provided at positions where the blade sections (40) are provided in a radial direction, in a rear surface (51) that is the other side in the axial direction of the disc section (30).
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: October 31, 2017
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Nobuyori Yagi, Hiroyuki Miyata
  • Patent number: 9803481
    Abstract: A rotor for a turbomachine includes a rim defining a base of a rotor, an airfoil shaped blade extending from said rim and defining a chord line and a bore extending from said rim opposite said airfoil shaped blade. The rim further includes at least one rail extending away from said airfoil shaped blade.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 31, 2017
    Assignee: United Technologies Corporation
    Inventors: Nicholas Aiello, Bob S. Bamford
  • Patent number: 9777735
    Abstract: A blower assembly includes a centrifugal fan and a motor assembly. The centrifugal fan has a plurality of axially extending impeller blades, a first axial end, and an air inlet. The air inlet is at the first axial end of the centrifugal fan. The motor assembly comprises a stator, a rotor, and an air directing surface. The air directing surface is shaped and configured to direct air drawn into the air inlet radially outwardly toward the impeller blades. The air directing surface extends generally along the rotor axis from its first end to its second end. At least a surface region of the air directing surface generally circumscribes the rotor axis and diverges radially outwardly as such surface region of the air directing surface extends away from the first end toward the second end.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: October 3, 2017
    Assignee: REGAL BELOIT AMERICA, INC.
    Inventors: Steven W. Post, William S. Gatley, Jr.
  • Patent number: 9739288
    Abstract: A fan hub balancing structure includes a hub main body. The hub main body has a top section, a circumferential section extending from the circumference of the top section and a lip section. The lip section is connected with the lower end of the circumferential section. The lip section has at least one residual weight section on the lip section. After the residual weight section is removed from the lip section, a balancing section is formed on the lip section. The balancing structure is able to provide a balancing effect for the hub main body and facilitate the processing of the hub main body.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: August 22, 2017
    Assignee: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Chun-Hao Huang, Chun-Liang Ho
  • Patent number: 9719489
    Abstract: Rotor blade assembly and methods for forming rotor blade assemblies are provided. A rotor blade assembly includes a rotor blade including a shell and 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 shell includes an inner skin, an outer skin, and a core disposed between the inner skin and the outer skin. The rotor blade assembly further includes a reinforcement assembly bonded to the shell, the reinforcement assembly comprising a reinforcement core.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: August 1, 2017
    Assignee: General Electric Company
    Inventor: Edward McBeth Stewart
  • Patent number: 9689278
    Abstract: A rotor disk comprises a plurality of circumferentially distributed hooks, the set of hooks defining an annular groove adapted to cooperate with at least two flange sectors. At least one of the hooks comprises a second element through which a recess is formed which opens up at each of the transverse flanks of the second element and at the internal peripheral surface of the second element.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: June 27, 2017
    Assignee: SNECMA
    Inventors: Patrick Adenis, Claude Lejars, Silvain Lormier, Sylvain Poitout
  • Patent number: 9683629
    Abstract: A centrifugal force pendulum having a pendulum mass pair and a pendulum flange, in which an arcuate cut-out with a cut-out contour is provided, wherein the pendulum masses of the pendulum mass pair are situated on both sides of the pendulum flange and are connected to each other by at least one spacer bolt which is guided through the cut-out, wherein the spacer bolt has a damping arrangement which includes a stabilizing element and an elastic damping element, wherein the damping element is designed to damp a striking of the spacer bolt on the cut-out contour of the cut-out, wherein the damping element and the stabilizing element of the damping arrangement are positioned relative to each other so that the damping element is able to strike the cut-out contour of the cut-out directly.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: June 20, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Thorsten Krause, Kai Schenck
  • Patent number: 9657577
    Abstract: An airfoil comprises an airfoil body with an internal cavity and inner and outer covers. The airfoil body defines a first major surface of the airfoil, and a rib extends along the internal cavity. The inner cover is bonded to the airfoil body over the internal cavity, and includes a coupling element extending along the internal cavity in cooperative engagement with the rib. The outer cover is bonded to the airfoil body over the inner cover, and defines a second major surface of the airfoil.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: May 23, 2017
    Assignee: United Technologies Corporation
    Inventor: Michael A. Weisse
  • Patent number: 9650896
    Abstract: A turbine engine blade, including an airfoil which extends radially between a blade root and an airfoil tip, axially between a leading edge and a trailing edge, and tangentially between a pressure side and a suction side, the profile of the blade having a series of basic profiles, in a form of a vane section, stacked on one another along a stacking line connecting the center of gravity of all the vane sections. The projection of the stacking line of the airfoil on at least one plane extending radially from the blade root includes a double tangential inversion of the direction of the curvature thereof, located in the last thirty percent of the height of the airfoil, the projection plane being positioned substantially perpendicular to the chord of the blade.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 16, 2017
    Assignee: SNECMA
    Inventors: Agnes Pesteil, Vincent Perrot
  • Patent number: 9611030
    Abstract: A device for absorbing kinetic energy for an aircraft structural element undergoing a dynamic impact. The device includes an outer enclosure made from a braided composite material configured to preserve its integrity after an impact, a foam core, contained in the outer enclosure and to at least partially fill the outer enclosure. The foam core is configured to at least partially absorb the kinetic energy generated by the impact. Reinforcing elements are integrated at least partially into the foam core to dissipate, combined with the form core, the kinetic energy generated by the impact. The reinforcing elements includes discontinuous threads inserted into the foam core by stitching, and each discontinuous thread includes an L- or T-shaped head, folded down outside the outer enclosure.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: April 4, 2017
    Assignee: AIRBUS GROUP SAS
    Inventors: Caroline Petiot, Michel Bermudez, Didier Mesnage
  • Patent number: 9599093
    Abstract: The application describes an apparatus for and a method of mounting wind turbine blades on a wind turbine tower. A number of guide rods are provided in the vicinity of the blade root and hub for connection to corresponding socket sections. The guide rods and socket sections are provided on respective ones of a wind turbine blade and a wind turbine hub to facilitate connection of one to the other. The guide rods and the sockets may be provided on the same or on different ones of the blade or hub. The guide rods and sockets allow the blade to be positioned at the hub in the correct rotational orientation to facilitate connection of the necessary fasteners.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: March 21, 2017
    Assignee: Vestas Wind Systems A/S
    Inventors: Michael Lundgaard Bitsch, Torben Friis Baun
  • Patent number: 9598168
    Abstract: A method of assembling a rotor blade assembly includes determining a first spanwise moment of a first component of the rotor blade assembly and comparing the first spanwise moment to a target first spanwise moment. The first spanwise moment of the first component is adjusted based on a result of the comparison. A second spanwise moment of a second component of the rotor blade assembly is determined and compared to a target second spanwise moment. The second spanwise moment of the second component is adjusted based on a result of the comparison. The first component is assembled to the second component, resulting in a rotor blade assembly meeting a target spanwise moment of the rotor blade assembly.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: March 21, 2017
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Kevin P. Leahy, Frank Caputo
  • Patent number: 9540094
    Abstract: Enriching and balancing the acoustic spectrum radiated by a propeller by introducing a differential pitch angle on certain blades of the propeller. Modifying the acoustic spectrum makes it possible to render the propeller noise more pleasant to the human ear.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: January 10, 2017
    Assignee: AIBUS OPERATIONS (SAS)
    Inventors: Camil Negulescu, Magdi Omais
  • Patent number: 9511457
    Abstract: A method of balancing a gas turbine engine rotor comprises the step of obtaining a rotor disc with a circumferential array of balance tabs projecting from a peripheral rim of the disc. Stress shielding scallops are defined in the rotor disc between the tabs. The balancing is achieved by removing material from at least one of the tabs.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: December 6, 2016
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Paul Stone
  • Patent number: 9494134
    Abstract: Rotor blade assemblies and methods for constructing rotor blade assemblies are provided. A rotor blade assembly may include 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 defining a span and a chord. The rotor blade assembly further includes an extension plate mounted to one of the pressure side or the suction side, the extension plate extending in the chord-wise direction between a first end and a second end, the second end extending beyond the trailing edge. The rotor blade assembly further includes a filler substrate provided on an inner surface of the extension plate and the trailing edge, the filler substrate tapering from the trailing edge towards the second end.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: November 15, 2016
    Assignee: General Electric Company
    Inventor: Kevin Wayne Kinzie
  • Patent number: 9403594
    Abstract: An enclosure for carrying an adjustable payload. The enclosure is beneficially used on a rotorcraft blade or other similar structure. The enclosure has a first element having a first flange and an upper element. The first element has an upper surface which has a first angle with respect to a lower surface of the first flange in a direction extending from an inboard direction to an outboard direction. The upper element has a lower surface which has a second angle with respect to an upper surface of said upper element in a direction extending from an inboard direction to an outboard direction, the lower surface being in contact with the upper surface of said first element, the second angle being in a direction which is opposite to the direction of said first angle. The first element and the upper element define a cavity for holding a payload.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: August 2, 2016
    Assignee: The Boeing Company
    Inventors: Frank Joseph Gill, III, Matthew Howard Cawthorne, Christopher James Cline, Dinesh Panneerselvam, Russell Eddy Fay
  • Patent number: 9371822
    Abstract: A wind turbine generator with a bearing system is disclosed. The bearing system includes a lockable connection having a bearing surface and a support surface which surfaces are engaged when the lockable connection is locked. Forces from the shaft are transferred via the bearing into the support through the bearing surface, wherein a support angle of the support surface, relative to a shaft plane formed by rotating the shaft around a first axis, which first axis is perpendicular to the center axis and which first axis is comprised in a vertical plane, is in a range from and including 5 degrees to and including 70 degrees.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: June 21, 2016
    Assignee: Vestas Wind Systems A/S
    Inventor: Jens Demtroder
  • Patent number: 9366141
    Abstract: A propeller rotor has a hub mounting a plurality of blades and a drive shaft for driving the hub and the blades about a central axis. A motor to change its position is operably connected to drive at least one counterweight. A sensor senses vibration on the propeller rotor and communicates with a controller. The controller controls the motor to change a position of the counterweight in response to a sensed imbalance. A method of operating a propeller rotor is also disclosed.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: June 14, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Mark A. Plickys, Paul A. Carvalho
  • Patent number: 9284961
    Abstract: A fan device includes a rotor 20 and recesses 40 to be filled with claylike weights 70. The rotor 20 includes an impeller 23 and a shaft 10. The impeller 23 has a hub 21 and vanes 22. The recesses 40 are provided on a surface 212 that crosses an axial direction of the hub 21. Each recess 40 has a first area 41 and a second area 42. The first area 41 is circumferentially arranged and extends in a substantially circumferential direction. The second area 42 is connected to an outer circumferential side of the first area 41 and has a shorter length in the circumferential direction than the first area 41. The weight 70 is closely adhered to wall surfaces 421 and 422 formed along a radial direction in the second area 42 so as to prevent separation thereof.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: March 15, 2016
    Assignee: MINEABEA CO., LTD.
    Inventors: Takayuki Mashima, Yoichi Kawai