Assembling Individual Fluid Flow Interacting Members, E.g., Blades, Vanes, Buckets, On Rotary Support Member Patents (Class 29/889.21)
  • Patent number: 10655482
    Abstract: A vane ring for a gas turbine engine includes an outer end wall and a plurality of spars coupled to the outer end wall. The vane ring further includes an inner end wall positioned radially inward of the outer end wall and coupled to the spars. The outer and inner end walls cooperate to form a flowpath.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: May 19, 2020
    Assignees: Rolls-Royce Corporation, Rolls-Royce North American Technologies Inc.
    Inventors: Ted J. Freeman, Jeffrey A. Walston, Jun Shi, Tara G. Schetzel
  • Patent number: 10641113
    Abstract: An airfoil cluster includes an inner diameter platform and an outer diameter platform. A plurality of airfoils extend radially from the inner diameter platform to the outer diameter platform. Each airfoil has a leading edge and a trailing edge, and pressure and suction sides between the leading and trailing edges. At least one of the airfoils includes a recessed portion on the pressure side adjacent to the trailing edge.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: May 5, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Takao Fukuda, Scott D. Hartmann
  • Patent number: 10625370
    Abstract: The present disclosure provides a rotary friction welding process including: providing an outer axisymmetric workpiece having a front first annular weld surface at a radially inward extent and a rear first annular weld surface at a radially inward extent; providing a front inner axisymmetric workpiece, the front inner workpiece having a front second annular weld surface at a radially outward extent of the front inner workpiece; providing a rear inner axisymmetric workpiece, the rear inner workpiece having a rear second annular weld surface at a radially outward extent of the rear inner workpiece; and rotary welding the workpieces together.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: April 21, 2020
    Assignee: ROLLS-ROYCE PLC
    Inventors: Simon E. Bray, Andrew R. Walpole
  • Patent number: 10612402
    Abstract: One aspect of the present disclosure includes a turbine vane assembly comprising a vane made from ceramic matrix composite material having an outer wall extending between a leading edge and a trailing edge and between a first end and an opposing second end; an endwall made at least partially from a ceramic matrix composite material configured to engage the first end of the vane; and a retaining region including corresponding bi-cast grooves formed adjacent the first end of the vane and a receiving aperture formed in the endwall; wherein a bond is formed in the retaining region to join the vane and endwall together.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: April 7, 2020
    Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce Corporation
    Inventors: Ted J. Freeman, Robert F. Proctor, Sean E. Landwehr, Adam L. Chamberlain
  • Patent number: 10590949
    Abstract: The invention relates to a ventilator wheel which is produced in the form of a radial or a diagonal ventilator wheel, and comprises a bottom disc and a plurality of ventilator blades arranged, on said bottom disc, so as to be distributed about an axial rotational axis, said bottom disc comprising a circumferential radial outer edge section that, when viewed in cross-section, extends in a curved shape in at least some sections and thus forms an elliptical transition of said bottom disc from a radial extension into an axial extension.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 17, 2020
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventors: Daniel Gebert, Jens Mueller, Alexander Konzal, Michael Strehle
  • Patent number: 10584603
    Abstract: A method of manufacturing a composite material vane with a covering element, the vane including a platform and a profile extending perpendicularly to the platform, comprises the following steps: providing a covering element and a preform of the vane, the preform comprising a platform portion and a profile portion extending substantially perpendicularly to the platform portion; positioning the covering element against the platform portion so as to obtain an assembly; placing said assembly in a mold; injecting a first resin into the mold so that said resin impregnates and covers the preform and covers at least a portion of the covering element; and carrying out a heat treatment so as to harden the first resin.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: March 10, 2020
    Assignee: Safran Aircraft Engines
    Inventors: Virginie Guilbert, Xavier Durand, Lise Lacroix
  • Patent number: 10549520
    Abstract: A structure includes a first body section that has a wall that spans in a vertical direction. The wall has a relatively thin thickness with respect to a length and a width of the wall. A second body section is arranged next to, but spaced apart from, the first body section. A gusset connects the first body section and the second body section. The gusset extends obliquely from the wall of the first body section with respect to the vertical direction such that the gusset is self-supporting. The first body section has a geometry that corresponds to an end-use component exclusive of the gusset.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: February 4, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Sergey Mironets, Lyutsia Dautova, Joseph Ott, Christopher F. O'Neill, Robert P. Delisle, Jesse R. Boyer, Agnes Klucha, Louis Porretti
  • Patent number: 10480333
    Abstract: A blade for a gas powered turbine includes a platform having a leading edge and a trailing edge. The leading edge is connected to the trailing edge by a suction side mateface and by a pressure side mateface. A blade extends outward from the platform. The blade has a foil shaped cross section and a suction side of the blade faces the suction side mateface and a pressure side of the blade faces the pressure side mateface. A radial height of the suction side mateface is different from a radial height of the pressure side mateface at a first axial position.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: November 19, 2019
    Assignee: United Technologies Corporation
    Inventors: Evan P. Molony, Carey Clum, Wolfgang Balzer
  • Patent number: 10458244
    Abstract: A rotor disk assembly may include a rotor disk and a retention ring coupled to the rotor disk. Generally, the retention ring is tuned to adjust a modal frequency response of the rotor disk/rotor disk assembly. In various embodiments, dimensions of the retention ring vary circumferentially. In various embodiments, the retention ring includes an axially extending flange and a radially extending flange. A radial thickness of the axially extending flange may vary circumferentially and/or an axial thickness of the radially extending flange may vary circumferentially.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 29, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Peter V. Tomeo, Carney R. Anderson
  • Patent number: 10436062
    Abstract: An article includes a ceramic wall that defines at least a side of a passage. The ceramic wall includes a flow turbulator that projects into the passage. The flow turbulator is formed of ceramic matrix composite. A gas turbine engine is also disclosed. The gas turbine engine includes a compressor section, a combustor in fluid communication with the compressor section, and a turbine section in fluid communication with the combustor. At least one of the turbine section or the compressor section including the article.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: October 8, 2019
    Assignee: United Technologies Corporation
    Inventor: Tracy A. Propheter-Hinckley
  • Patent number: 10415401
    Abstract: An airfoil retention assembly for a gas turbine engine includes, among other things, a disk, a coverplate, and a retaining ring. The disk defines a disk axis and an array of slots for receiving airfoil blades. The coverplate is dimensioned to radially overlap the array of slots relative to the disk axis. The retaining ring includes a ring body extending circumferentially about the disk axis between first and second ring ends to define a ring length. First and second retaining features continue along first and second circumferential faces of the ring body, respectively, to define first and second lengths, respectively. At least one of the first and second lengths is less than the ring length.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: September 17, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Noah Wadsworth, Elizabeth F. Vinson
  • Patent number: 10384302
    Abstract: A workpiece for use with a flash producing welding process comprises a revolute body, a plurality of first attachment portions, a plurality of second attachment portions. The revolute body has an axis of rotation. Each of the first attachment portions has a first radially outer weld joint surface, and each of the second attachment portions has a second radially outer weld joint surface. The revolute body comprises a plurality of first and second stub portions, with each of the first stub portions having a first radially inner weld joint surface, and each of the second stub portions having a second radially inner weld joint surface.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: August 20, 2019
    Assignee: ROLLS-ROYCE plc
    Inventor: Richard N. March
  • Patent number: 10352178
    Abstract: A locking element for a row of blades of a turbomachine includes a number of blades that are inserted by their roots in an anchoring groove on the rotor side and are thereby held in the radial direction in form-fitting manner in the anchoring groove. The locking element has a basic body that has a front bearing surface and a back bearing surface for form-fitting with opposite-lying groove surfaces, a front lock projection and a back lock projection for engaging in opposite-lying recesses of the anchoring groove, and a threaded region for interacting with a tightening element. Access to the threaded region for the tightening element is blocked on one side.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: July 16, 2019
    Assignee: MTU Aero Engines AG
    Inventors: Werner Humhauser, Hermann Klingels
  • Patent number: 10352331
    Abstract: An airfoil of a turbine engine includes pressure and suction sides and extends in a radial direction from a 0% span position to a 100% span position. The airfoil has a relationship between a camber angle and span position that defines a curve with the camber angle having a positive slope from 0% span to 100% span.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: July 16, 2019
    Assignee: United Technologies Corporation
    Inventors: Edward J. Gallagher, Lisa I. Brilliant, Joseph C. Straccia, Stanley J. Balamucki, Mark A. Stephens, Kate Hudon
  • Patent number: 10344603
    Abstract: A vane pack for a gas turbine engine includes an annular arrangement of vanes. A ring is secured around the vanes and extends proud of an axial end of the vanes.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: July 9, 2019
    Assignee: United Technologies Corporation
    Inventors: John T. Ols, Steven D. Porter
  • Patent number: 10301945
    Abstract: A turbine rotor blade that includes: an airfoil defined between a pressure face and a suction face; a tip shroud that includes a seal rail projecting from an outboard surface and, formed thereon, a cutter tooth; and a cooling configuration that includes a cooling channel for receiving and directing a coolant through an interior of the rotor blade. The cooling channel may include fluidly connected segments, in which: a supply segment extends radially through the airfoil; a cutter tooth segment is formed within the cutter tooth of the seal rail; and branching segments formed within at least one of the tip shroud and an outboard region of the airfoil. Each of the branching segments may extend between an upstream port, which connects to the cutter tooth segment, and an outlet port, which is formed on a target surface area, so that the branching segment bisects a target interior region.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: May 28, 2019
    Assignee: General Electric Company
    Inventors: Rohit Chouhan, Randall Richard Good, Hiteshkumar Rameshchandra Mistry, Shashwat Swami Jaiswal
  • Patent number: 10267166
    Abstract: A turbomachine assembly is shown, including a rotor and a ring of blades mounted on the rotor. Each blade includes an airfoil portion and a root portion inserted in a circumferential blade-retaining groove of the rotor. The blade-retaining groove includes an enlarged groove portion. The blades in the enlarged groove portion are rotatable around a respective, generally radial axis, to take a position of minimum tangential dimension. At least one removable insert is arranged along the enlarged groove portion, between the root portions of the blades located in the enlarged groove portion and a side wall of the blade-retaining groove, to force and lock the blades in a final assembled arrangement.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: April 23, 2019
    Assignee: NUOVO PIGNONE SRL
    Inventors: Lorenzo Cosi, Damaso Checcacci
  • Patent number: 10202859
    Abstract: A stator blades of an axial turbomachine intended to be fitted on a ferrule in an annular row of identical blades. Each blade includes a platform with opposed lateral edges and a screw to the ferrule. The contour of the platform has, at each of the lateral edges, an angular profile designed to mate with the contiguous edge of the platform of an adjacent blade. This feature enables the angular position or pitch of the blade to be set. In a blade row fixed on a stator, mechanical clearances J1, J2, J3 and the fixation screws cause an average angular orientation error. The blades are made with a compensatory angle to offset the angular orientation error.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: February 12, 2019
    Assignee: SAFRAN AERO BOOSTERS SA
    Inventor: Guy Biemar
  • Patent number: 10190497
    Abstract: A gas turbine engine comprises a compressor section, a combustor section downstream of the compressor section, and a turbine section downstream of the combustor section. A mid-turbine frame includes an outer case portion and is configured to support the turbine section. At least one shaft defines an axis of rotation, and the turbine section comprises an inner rotor directly driving the shaft. The inner rotor includes an inner set of blades. An outer rotor is positioned immediately adjacent to the outer case portion and has an outer set of blades interspersed with the inner set of blades. The outer rotor is configured to rotate in an opposite direction about the axis of rotation from the inner rotor. A gear system is positioned downstream of the combustor section, is mounted to the mid-turbine frame, and is coupled to the outer rotor to drive the at least one shaft.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: January 29, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Gabriel L. Suciu, Brian D. Merry
  • Patent number: 10132291
    Abstract: A wind turbine blade having a circular root portion and provided with root bushings for mounting the blade to a wind turbine hub, and the root bushings comprise an elongated cross-sectional profile with a first dimension oriented along a radius of the circular root portion being larger than a second dimension oriented along a circumferential direction of the circular root section.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: November 20, 2018
    Assignee: LM WP PATENT HOLDING A/S
    Inventor: Jesper Hasselbalch Garm
  • Patent number: 10072746
    Abstract: A stator of a hydrokinetic torque converter comprises a stator hub having an axis, a stator belt coaxial to the axis and a plurality of stator blades extending radially outwardly between the stator hub and the stator belt. Each of the stator blades has radially inner and outer mounting pins. The stator hub has hub slots, and the stator belt has belt slots. The radially inner mounting pin of one of the stator blades is disposed in one of the hub slots of the stator hub and the radially outer mounting pin of one of the stator blades is disposed in one of the belt slots of the stator belt.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: September 11, 2018
    Assignee: Valeo Embrayages
    Inventor: Alexandre Depraete
  • Patent number: 10054206
    Abstract: A torque converter having an input means and an output means, comprising a cover non-rotatably connected to the input means, an impeller having an impeller shell non-rotatably connected to the cover, the impeller also having at least one blade fixedly secured to the impeller shell, a stator having at least one blade fixedly secured thereto, and, a turbine having a turbine shell non-rotatably connected to the output means, the turbine shell comprising a first profile having at least one blade fixedly secured thereto, and a second profile arranged concentrically within the first profile, the second profile comprising at least one integrated stiffening element.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: August 21, 2018
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Nigel Gurney
  • Patent number: 10047615
    Abstract: A method for mounting rotor blades on a rotor disk along a predetermined pitch circle diameter in such a way that adjacent rotor blades, when properly mounted on the rotor disk and in the cold state, are clamped against each other with a predetermined preload. A clamping device which performs such a method has a plurality of clamping elements which are arranged in a uniformly distributed manner around a central axis, the number of which corresponds to the number of rotor blades to be mounted on the rotor disk and which in each case are designed for the locating of a rotor blade, wherein the clamping elements are moveable radially, exerting a radially inwardly directed force.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: August 14, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventor: Daniel Hofsommer
  • Patent number: 10041471
    Abstract: Provided are a wind turbine blade, with which effective reinforcement against possible flexural deformation in a longitudinal direction is realized, and a reinforcing method for the wind turbine blade. The wind turbine blade includes a hollow blade main body having a cylindrical blade root portion and extending from the blade root portion along a blade length direction, and a reinforcing plate provided in contact with an inside surface of the blade root portion and formed of an elongated member having a dimension along the blade length direction that is larger than a dimension along a circumferential direction of the blade root portion.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: August 7, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yasutaka Kimura, Takao Kuroiwa, Kouji Esaki, Toshiyuki Hirano, Kentaro Shindo, Takeshi Fujita, Keisuke Ota
  • Patent number: 10018058
    Abstract: A propulsion unit having reduced noise employs a rotor having a plurality of variable pitch blades. A tensioning joint mechanism is carried within each blade and a tension element is engaged by the tension joint mechanism. The tension element is configured to maintain tension between the blades in the rotor and the tensioning joint mechanism adapted to allow variation of pitch of the blades without altering tension in the tension element.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: July 10, 2018
    Assignee: The Boeing Company
    Inventors: Sina Golshany, Todd W. Erickson
  • Patent number: 10006296
    Abstract: A method and a blade for a turbine or, more generally a turbomachine, are described with the blade having at a top end a shroud segment designed to engage with shroud segments of adjacent blades in an ring-shaped assembly at least partly by means of assembling the blades with the shroud segment having a central indentation along an engaging face.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: June 26, 2018
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Dilli Prasad Ramannagari, Pierre-Alain Masserey, Ross Brian Fleming, Christina Calcagni
  • Patent number: 9958046
    Abstract: A torque converter turbine core ring is provided. The turbine core ring includes a plurality of arc sections having an inner circumference and an outer circumference and a plurality of weakened sections connecting the arc sections to each other. The weakened sections each having a lesser strength than each of the arc sections. A torque converter turbine, a torque converter and a method of forming a torque converter turbine are also provided.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: May 1, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Scott Schrader
  • Patent number: 9932833
    Abstract: A method for building centrifugal radial stages of turbines, in which the first and the second end of each blade (4) are connected to respective two support rings (2, 3) joining, by means of laser welding, at least a first semi-portion (10) belonging to the respective end of the blade (4) to a respective second semi-portion (10) belonging to the respective support ring (2, 3) so as to form a resilient yielding connecting portion (10, 15) along a radial direction, and providing at least a stop portion (11) belonging to the end of the blade (4) facing, along the radial direction, at least a stop element (14) of the respective support ring (2, 3). The resilient yielding connecting portion (10, 15) enables the stop portion (11) to enter into contact with the stop element (14) when the stage (1) is subjected to the functioning loads of the turbine.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: April 3, 2018
    Assignee: EXERGY S.P.A.
    Inventors: Claudio Spadacini, Marco Rizzi
  • Patent number: 9920642
    Abstract: Aspects of the present invention relate to systems and methods of a vane design utilizing welding techniques. The present invention concerns a method for preventing cracking within a vane assembly utilizing full penetration welding. Additional embodiments concern a vane design that, when assembled with another vane, comprises an axial slot that prevents cracking within a vane assembly.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: March 20, 2018
    Assignee: ANSALDO ENERGIA IP UK LIMITED
    Inventors: Richard Orsatti, Edward Len Miller
  • Patent number: 9919392
    Abstract: A method for manufacturing a turbine rotor blade wherein warping, bending and twisting of the entire rotor blade, which is provided with an excess thickness portion after a forging step, can be suppressed. In the forging step in a process for manufacturing a rotor blade (23), the forging is hot-forged such that the distance (the excess thickness amount) from the blade surface of the blade section (23) to the surface of the excess thickness section is substantially uniform along the entire periphery of a cross section of the blade section (23) and the excess thickness section (31) perpendicular to the blade length direction, and such that the amount of the excess thickness in the blade length direction, which is the thickness of the excess thickness section (31), gradually increases toward the blade tip from a prescribed position.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: March 20, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kohei Hatano, Hiroharu Oyama, Motonari Machida, Hidetaka Haraguchi, Ken Ishii, Keisuke Kamitani, Takumi Matsumura, Takahiro Ota
  • Patent number: 9920645
    Abstract: Disclosed is a sealing system for a turbomachine, in particular for a gas turbine, the sealing system being formed in an annular space between a flow-limiting wall of the turbomachine and at least one rotor blade tip of a rotor blade or an outer shroud arranged on the rotor blade tip, and comprising at least one sealing point. The sealing point comprises at least one run-in coating arranged on the rotor blade tip or on the outer shroud in the direction of the flow-limiting wall of the turbomachine. The invention furthermore encompasses a gas turbine comprising the sealing system.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: March 20, 2018
    Assignee: MTU AERO ENGINES GMBH
    Inventors: Inga Mahle, Alexander Boeck
  • Patent number: 9855627
    Abstract: A regenerating method of a cutting blade to be repaired includes a chamfering step of chamfering a leading edge part and side edge parts of a cutting blade, a build-up welding step of welding a build-up on the chamfered leading edge part and the chamfered side edge parts, and a processing step of regenerating and processing build-up welding portions of the cutting blade into a specified shape of the leading edge part and the side edge parts, and of the build-up welding portions formed on the side edge parts, such that a dimension L1 of a lateral build-up weld zone is 1 to 3 times a dimension L2 of an outer build-up weld zone.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: January 2, 2018
    Assignee: KABUSHIKI KAISHA KINKI
    Inventors: Naoya Wada, Yasuhiko Honda, Yoshinobu Azui, Isao Nagai, Tetsuo Yasukawa, Katsu Matsumoto, Keita Takami, Natsuki Takemoto
  • Patent number: 9816518
    Abstract: A centrifugal impeller for a turbomachine is provided. The centrifugal impeller comprises a plurality of aerodynamic vanes, each of the aerodynamic vanes having internal walls on which is associated a fabric element.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: November 14, 2017
    Inventors: Massimo Giannozzi, Iacopo Giovannetti, Andrea Massini, Bulent Aksel, Christophe Lanaud, Julian O'Flynn, Scott Finn
  • Patent number: 9782843
    Abstract: A beveling cutter can include a body with a shaft hole formed through the center. The cutter can also include a plurality of 10 cutter blades arranged at predetermined distances on the circumferential surface of the body, each having a radial primary blade with a radial primary relief angle (a) ranging from about 5 to about 15 degrees and a radial secondary blade with a radial secondary relief angle (b) ranging from about 16 to about 30 degrees. The cutter can also include discharge grooves formed longitudinally between the cutter blades to discharge chips produced in beveling, and a key groove formed at a portion inside the body, in which the helix angle (d) of the cutter blades ranges from about 5 to about 45 degrees. With the beveling cutter, it is possible to smoothly discharge chips produced in beveling and to prevent damage to the cutter blades.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: October 10, 2017
    Inventor: Thomas M. Dieckilman
  • Patent number: 9759226
    Abstract: A platform for a fan of a gas turbine engine includes a body portion, a forward flange at a front of the body portion that includes an engagement feature that interacts with a forward flange of a lug of a hub of a fan of a gas turbine engine, and a pin integral with a rear portion of the body portion. The pin is receivable in an aperture in a rear flange of the lug.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: September 12, 2017
    Assignee: United Technologies Corporation
    Inventors: Shelton O. Duelm, Christopher M. Quinn, Charles W. Brown
  • Patent number: 9745995
    Abstract: A retainer plate is provided for retaining a dovetail root of a fan blade of a gas turbine engine in a corresponding axially-extending slot in the rim of a fan disc. In use, the plate locates in a cavity formed at an end of the slot such that a first side of the plate is arranged for contact with an axial end face of the dovetail root and an opposite second side of the plate is arranged for contact with an abutment surface of the cavity to limit axial movement of the root along the slot. The retainer plate is formed from fiber-reinforced composite material, at least a portion of the composite material being reinforced by 3D-woven fiber tows.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: August 29, 2017
    Assignee: ROLLS-ROYCE plc
    Inventor: Matthew Paul Jevons
  • Patent number: 9702444
    Abstract: A method for manufacturing a fluid power transmission includes a first step of assembling a blade/core provisional assembly having a plurality of blades movably linked to a core, involving aligning the plurality of blades on a blade alignment jig, laying the core over a group of blades while extending a projecting piece provided on each blade through a latching hole provided in the core, and bending an extremity part of the projecting piece thus preventing the projecting piece from coming out of the latching hole, a second step of setting the blade/core provisional assembly at a predetermined position on an inside face of the shell, and a third step of carrying out brazing between the projecting piece and the latching hole and between the blade and the shell. Such method provides a high quality impeller of a fluid power transmission by joining a shell, a blade, and a core.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: July 11, 2017
    Assignee: Yutaka Giken Co., Ltd.
    Inventors: Tomohiro Okamura, Katsuyoshi Aoshima, Masaru Nambara, Nobutaka Amma, Yuji Horie
  • Patent number: 9702261
    Abstract: A steam turbine is provided. The steam turbine includes a housing and a steam inlet coupled in flow communication to the housing which is configured to discharge a first steam flow within the housing. A stator is coupled to the housing and includes plurality of vanes. A rotor is coupled to the housing and located within the stator, wherein the rotor and the stator are configured to form a first flow path there between and in flow communication with the first steam flow. The rotor includes a plurality of blades coupled to the rotor, at least one root of the plurality of blades has a first side, a second side and a passageway coupled in flow communication to the first side and the second side. The passageway is configured to define a second flow path in flow communication with the first flow path and to discharge a second steam flow within the at least one root.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: July 11, 2017
    Assignee: General Electric Company
    Inventors: Sacheverel Quentin Eldrid, Thomas Joseph Farineau, Michael Earl Montgomery, Timothy Scott McMurray, Xiaoqing Zheng
  • Patent number: 9695714
    Abstract: A turbine module comprises a turbine shaft, a rotor assembly secured to the shaft, a bearing assembly rotatably supporting the turbine shaft, and a bearing housing containing the bearing assembly. The bearing housing includes a gutter at least partially circumscribing the bearing assembly, and a drain disposed proximate a base of the gutter. The gutter includes a first sloped floor portion circumferentially adjacent to the drain.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: July 4, 2017
    Assignee: United Technologies Corporation
    Inventors: David R. Olsen, Frederic G. Miner, Paul H. Dolman
  • Patent number: 9638212
    Abstract: A variable vane assembly for a gas turbine engine compressor with a plurality of pivoting variable vanes extending between inner and outer shrouds and having an overhang portion that protrudes from a button at opposed ends of the vane. A plurality of projections, disposed on at least one of the inner and outer shrouds, protrude into the gas path relative to a nominal gas path boundary of the shrouds. The projections are disposed adjacent the overhang portion and have an angled planar surface that is substantially parallel to a plane swept by a terminal edge of the overhang portion when the variable vane is rotated through its vane pivot arc, so that a radial clearance gap between the shroud and the overhang portion remains substantially constant through a substantial portion of the vane pivot arc.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: May 2, 2017
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Andrew R. Marshall
  • Patent number: 9631916
    Abstract: An apparatus including a first component having an exterior surface formed of a ceramic material and including a primary surface region and a plurality of secondary surface regions protruding from the primary surface region, and a second component positioned in contact with at least one of the secondary surface regions and spaced from the primary surface region to define a determinant load path between the first and second components. A method of forming the apparatus is also provided.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: April 25, 2017
    Assignee: Rolls Royce Corporation
    Inventors: David John Thomas, Richard Christopher Uskert
  • Patent number: 9631602
    Abstract: The present invention relates to a wind turbine component, having a connecting portion for connecting the wind turbine component to another turbine component and at least part of the connecting portion is formed of a first type of metal, characterized in that: the connecting portion is further provided with an additional part formed of a second type of metal which is connected to the metallic part of the connecting portion; and the second type of metal is more active than the first type of metal, whereby the additional part forms a sacrificial anode. The present invention further relates to a wind turbine having the above component.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: April 25, 2017
    Assignee: Vestas Wind Systems A/S
    Inventor: Lars Lund
  • Patent number: 9623492
    Abstract: A milling tool is disclosed. The tool may include a base including a clamp for coupling to a selected mounting slot of a plurality of slots of the rotor; a milling tool including a motorized milling head; and a motorized linear actuator coupling the milling tool to the base. The base mounts the motorized linear actuator at an acute angle relative a portion of the slot to allow the motorized linear actuator to linearly move the milling tool to machine the portion of the slot. The portion of the slot may include, for example, an end face and, more particularly, a root corner of the slot where a cooling slot flange extends from the root of the slot. The milling tool may be portable.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: April 18, 2017
    Assignee: General Electric Company
    Inventors: Daryl Paul Capriotti, James Bradford Holmes, Andrew Lee Trimmer
  • Patent number: 9556741
    Abstract: A turbine blade for a gas turbine engine comprises a platform, a blade root, an airfoil portion defining pressure and suction sides, and a shroud provided at a tip of the airfoil portion opposite to the blade root. The shroud includes a body having a radially outer face opposite to the airfoil portion, upstream and downstream generally parallel fins extending outwardly from the outer face, and two ribs extending outwardly from the outer face. Each of the fins has an end disposed toward the pressure side and another end disposed toward the suction side. The ribs extend from and connecting the upstream fin to the downstream fin at locations other than the ends of the upstream and downstream fins. The ribs converge toward the downstream fin at an angle of between about 10 and about 45 degrees. A shroud for a blade is also presented.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: January 31, 2017
    Assignee: PRATT & WHITNEY CANADA CORP
    Inventors: Ghislain Plante, Remy Synnott, Jaideep Gahlawat
  • Patent number: 9546552
    Abstract: A gas turbine having a system of stages including at least one stage having first and second airfoils arranged alternately in the circumferential direction. The first airfoils each have a first array of cavities and the second airfoils each have a second array of cavities different from the first array of cavities.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 17, 2017
    Assignee: MTU Aero Engines AG
    Inventor: Harald Schoenenborn
  • Patent number: 9533374
    Abstract: A manufacturing method in which laser welding is used to weld multiple posts of a protection structure with multiple splits of the silicon steel sheet assembly of a stator module. The manufacturing method has high welding precision and excellent sealing effect. Also, the welding time is shortened and the thermal deformation is reduced.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 3, 2017
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Bor-Haw Chang, Shu-Fan Liu, Kuo-Chen Chang
  • Patent number: 9486963
    Abstract: A powder-derived, non-finished work piece includes a first body section that has a wall that spans in a vertical direction. The wall has a relatively thin thickness with respect to a length and a width of the wall. A second body section is arranged next to, but spaced apart from, the first body section. A gusset connects the first body section and the second body section. The gusset extends obliquely from the wall of the first body section with respect to the vertical direction such that the gusset is self-supporting. The first body section has a geometry that corresponds to an end-use component exclusive of the gusset.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 8, 2016
    Assignee: United Technologies Corporation
    Inventors: Sergey Mironets, Lyutsia Dautova, Joseph Ott, Christopher F. O'Neill, Robert P. Delisle, Jesse R. Boyer, Agnes Klucha, Louis Porretti
  • Patent number: 9470100
    Abstract: The technical field of the invention is that of turbine rotors for a thermal electric power station and the subject of the invention is, more particularly, a rotor of a turbine for a thermal electric power station, said rotor comprising a plurality of blades, each comprising at least one root and a vane; and at least one rotor disk secured to a shaft able to be in rotation about a reference axis, the rotor disk comprising on its periphery outgrowths in which to fit the blades, so that the vanes of the blades are arranged radially with respect to the reference axis; said rotor being one wherein: the rotor disk comprises a groove opening axially and having a lower face and an upper face, the lower face of the groove of the rotor disk being situated on the periphery of said rotor disk and the upper face of the groove of the rotor disk being situated on the outgrowths and facing the lower face; each of the blades comprises, at its root, a lateral projection directed axially, said lateral projection having, in its
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: October 18, 2016
    Assignee: General Electric Technology GmbH
    Inventors: Christophe Berquier, Andre Batot
  • Patent number: 9371840
    Abstract: A centrifugal blowing fan includes a back yoke made from metal, having a substantially bottomed cylindrical portion around a rotating shaft of a motor, an inner surface attached with a magnet of the motor mounted thereon and a flange portion disposed around a periphery of an opening of the cylindrical portion; and a cylindrical impeller made from resin, having a plurality of blades circumferentially arranged, an annular collar portion joined with first ends of the plurality of blades and a doughnut-shaped disk portion joined with second ends of the plurality of blades, wherein the disk portion has at least one fitting, and the flange portion has at least one fitted space receiving the at least one fitting so as to concentrically and fixedly connect the impeller and the back yoke.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: June 21, 2016
    Assignee: MINEBEA CO., LTD.
    Inventor: Kazuhiko Fujita
  • Patent number: 9353627
    Abstract: A blade for a wind turbine comprising a blade root portion, the blade root portion defining an annular mounting surface for coupling to a hub or extender of the wind turbine and comprising a plurality of first holes provided with an internal bushing, wherein at least one first internal bushing comprises at least one first securing member, and at least one second internal bushing comprises at least one second securing member, the first and second bushings being located in or near substantially opposite positions of the annular mounting surface, and wherein said first and second securing members are adapted to receive connecting means for connecting the first securing member with the second securing member.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 31, 2016
    Assignee: ALSTOM WIND, S.L.U.
    Inventor: Luca Feigl