Patents Examined by Ninh H. Nguyen
  • Patent number: 10041534
    Abstract: A retention housing for the outer race of a bearing of a gas turbine engine includes a spring finger housing connected to and overlying a bearing housing that is connected to the outer race of the bearing. The spring finger housing includes an arrangement of spring fingers that yields a lightweight housing capable of withstanding very high radial loads combined with very high torsional windup and axial thrust load. Dowel pins extending radially from the bearing housing and through the engine's interface shell limit the deflection and self-arrest the distortion of the housing. A gas turbine engine includes the retention housing described above.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: August 7, 2018
    Assignee: General Electric Company
    Inventors: Ravindra Shankar Ganiger, Bruce Alan Carter, Charles Andrew Corman
  • Patent number: 10041369
    Abstract: This disclosure relates to a gas turbine engine including a blade outer air seal (BOAS) having at least one attachment hook adjacent one of a leading edge and a trailing edge thereof. The BOAS further includes at least one radial standoff axially aligned with the at least one attachment hook.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: August 7, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Ken F. Blaney, Brian R. Pelletier, James N. Knapp
  • Patent number: 10041352
    Abstract: A stator of a turbine of a gas turbine, having a flow duct in which stator vanes are arranged, each vane having an outer and an inner vane platform, and each having a cooling air chamber formed by adjacent vane platforms for passing through cooling air, characterized in that the resultant cooling air chamber and/or a platform intermediate gap are designed such that starting from a side of the vane platform facing the adjacent vane platform, at least one outflow pocket open to a platform upper side and connected to the cooling air chamber is formed, and that in the wall of the cooling air chamber, at least one cooling air pocket opened radially inwards to the cooling air chamber and limited by an intermediate element or a sealing strip is formed and opens to the platform intermediate gap.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: August 7, 2018
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Markus Weinert, Tobias Leymann
  • Patent number: 10036256
    Abstract: A gas turbine has at least one rotor and inner housing part to form an annular chamber therebetween. The annular chamber is fluidically connected to a compressor portion at one end and expansion turbine portion at the other, and is supplied with cooling fluid. First and second swirl supply lines supply the annular chamber with cooling fluid. The cooling fluid is supplied to the surface of the rotor with a tangential flow component, and a first seal element in the annular chamber acts as a flow resistor. A discharge line in the rotor between the first seal element and expansion turbine portion receives and discharges cooling fluid from the second swirl supply line. No bypass lines are provided from the first swirl supply line such that the cooling fluid is conducted around the second swirl supply line in order to be returned to a location of the annular chamber.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: July 31, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christian Kowalski, Joachim Krützfeldt
  • Patent number: 10036270
    Abstract: Various embodiments include a rotor key member having: a body with a primary axis extending in a direction substantially perpendicular to an axial direction in a steam turbine, the body including: a first pair of opposing sides; a second pair of opposing sides extending between the first pair of opposing sides; a top surface and a bottom surface extending between the second pair of opposing sides; and a fillet, bevel or chamfer edge extending between a first one of the first pair of opposing sides and the bottom surface and extending an entire length of the body along the primary axis; and a slot within the body, the slot extending a portion of a length of the body along the primary axis between the second pair of opposing sides and forming an opening in a second one of the first pair of opposing sides.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: July 31, 2018
    Assignee: General Electric Company
    Inventors: Steven Sebastian Burdgick, David Bruce Knorr, Sean Christopher Morrissey, Nicholas Daniel Viscio
  • Patent number: 10030524
    Abstract: A component comprises a set of thin film cooling holes formed therein. Each of the thin film cooling holes provides a passage between a first surface of the component and a second surface of the component. Each of the thin film cooling holes includes a smooth transition between the first surface of the component and the surface the passage, and a progressively steeper flow path relative to the first surface of the component and between the smooth transition and the second surface of the component.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: July 24, 2018
    Assignee: Rolls-Royce Corporation
    Inventors: Jeffrey F. Rhodes, Clinton A. Hammes, Rusty M. Garner
  • Patent number: 10030519
    Abstract: A gas turbine engine is provided. The engine has an axis and a plurality of coaxial turbine discs, including a first disc and a second disc. A face of the first disc is disposed opposite to a face of the second disc. The engine also has a cover plate coaxial with the axis covering the second disc. The second disc includes an arrangement of turbine blade inserts positioned around its periphery. This arrangement is concentric with the plurality of turbine discs. Turbine blade inserts are retained on the second disc at least in part by the cover plate. The engine further comprises a coaxial tie bolt extending through the plurality of coaxial turbine discs, a spanner nut on the end of the tie bold, an arm coaxial with the axis extending from the face of the second disc having a distal end an axial stop extending from the face of the first disc. The distal end is in contact with the axial stop. The axial stop retains the axial movement of the second disc.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: July 24, 2018
    Assignee: ROLLS-ROYCE CORPORATION
    Inventors: Brandon R. Snyder, Daniel K. Morrison, Matthew Basiletti
  • Patent number: 10024308
    Abstract: A method of guiding lightning to a lightning receptor of a rotor blade for a wind turbine, wherein the method includes the following steps: Generating a vortex of airflow by means of a vortex generator, the vortex generator being located at the surface of the rotor blade; attracting the lightning by the vortex; guiding the lightning to the lightning receptor is provided. Furthermore, the invention relates to a rotor blade for a wind turbine, wherein the rotor blade comprises a vortex generator for generating a vortex of airflow, the vortex generator being located at the surface of the rotor blade, and a lightning receptor for receiving an electrical current from the lightning. The vortex generator and the lightning receptor are arranged such with regard to each other that the lightning is guided to the lightning receptor by the vortex which is generated by the vortex generator.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: July 17, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Peder Bay Enevoldsen, Kaj Olsen, Karsten Schibsbye
  • Patent number: 10024337
    Abstract: One describes a rotor (1) for an exhaust-fan assembly (4) of an 5 agricultural machine, the rotor (1) comprising a central shaft (7), a first portion (31) provided with an inlet deflector (15) having a substantially elliptical profile, defining a tapered inlet end (26). The rotor, which is also provided with a set of blades (13), further comprises a second portion (29) provided with an outlet deflector (22) having a substantially elliptical profile, so that the 10 first and the second portions (31, 29) are associated to the central shaft (7). According to the invention, one provides a rotor that promotes efficient cleaning of harvested cane.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: July 17, 2018
    Assignee: Marchesan Implementos e Máquinas Agrícolas Tatu S.A.
    Inventors: Dacio Helene Junior, Valter Palmute
  • Patent number: 10024178
    Abstract: A device for chocking and retaining a dovetail root of a blade of a gas turbine engine in a corresponding axially-extending slot in the rim of a disc, the root being mounted in the slot by insertion of a leading end of the root into a proximal end of the slot and then sliding the root towards a distal end of the slot. The device includes a first wedging body having a key portion receivable in a keyway formed at the distal end of the slot. The keyway restrains the first wedging body against movement in the axial direction. The first wedging body further has a first angled surface over which a correspondingly angled leading end surface of the root slides when the root is inserted in the slot to urge the leading end of the root radially outwardly.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 17, 2018
    Assignee: ROLLS-ROYCE plc
    Inventor: Christopher Benson
  • Patent number: 10024183
    Abstract: A disk-seal arrangement for a gas turbine engine rotor includes a blade retention disk having a longitudinally opening slot therein and a seal disk juxtaposed to said blade retention disk and a single anti-rotation tab received within the blade retention disk slot. The seal disk also includes a pair of balance slots disposed immediately adjacent the antirotation tab to offset the weight thereof for preserving rotor balance. A split ring is disposed longitudinally between the blade retention and seal disks for reacting longitudinal loading therebetween. The ends of the split ring seat against side surfaces of the antirotation between the split ring and the blade retention and seal disks.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: July 17, 2018
    Assignee: United Technologies Corporation
    Inventors: Julian Partyka, Jonathan P. Sandoval
  • Patent number: 10018070
    Abstract: A turbo-machine, which can be operated in an optimized driving range is provided. To this end, a method for operating a turbo-machine having at least one turbo-machine stage, which has at least one rotary shaft is disclosed. According to the method, the following method steps are carried out: a) determining a desired efficiency characteristic value ?soll of the turbomachine stage; b) determining an actual efficiency characteristic value ?ist of the turbo-machine-stage; c) determining a comparison efficiency characteristic value of the turbo-machine stage by comparing the actual efficiency characteristic value ?ist and the desired efficiency characteristic value ?soll to one another; and d) changing at least one operating parameter of the turbo-machine stage subject to the comparison efficiency characteristic value ?vgl, wherein in order to determine the actual efficiency characteristic value ?ist, a measuring of a torque of the rotary shaft of the turbo-machine-stage is carried out.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: July 10, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Hans-Gerd Brummel, Dirk Grieshaber, Uwe Pfeifer, Huub De Bruyn
  • Patent number: 10012103
    Abstract: A gas turbine engine variable guide vane has a fixed portion on an upstream side, a movable flap on a downstream side and a transfer slot between a fixed portion trailing surface and a movable flap leading surface. The movable flap has opposite pressure and suction sides along a chord line between leading and trailing edges, and is rotatable about an axis along a movable flap span over a range of angular positions between open and closed. The trailing surface has a substantially U-shaped profile with first and second branches respectively partially around the pressure and suction sides. The transfer slot has inlet and exhaust ports respectively on the pressure and suction sides. In the closed position the suction side contacts the second branch closing the exhaust port, and in the open position the second branch directs a first air flow through the transfer slot tangentially over the suction surface.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: July 3, 2018
    Assignee: ROLLS-ROYCE plc
    Inventors: Vasileios Pachidis, Carlos Soria
  • Patent number: 10012100
    Abstract: A turbine shroud for a gas turbine engine includes a carrier and a blade track. The blade track includes an annular runner and a plurality of inserts that extend radially outward away from the annular runner. The inserts extend through the carrier to couple the annular runner with the carrier.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: July 3, 2018
    Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce Corporation
    Inventors: Daniel K. Vetters, Jun Shi, Jeffrey A. Walston, Aaron D. Sippel
  • Patent number: 10012082
    Abstract: A gas turbine engine includes first and second shaft members in an interference fit relationship with one another at an interface. The first and second shaft members respectively include first and second flanges that are arranged adjacent to the interface. The first and second flanges respectively include first and second threads that are configured to cooperate with a tool during disassembly of the first and second shaft members.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: July 3, 2018
    Assignee: United Technologies Corporation
    Inventor: Marc J. Muldoon
  • Patent number: 10006306
    Abstract: A turbine exhaust case (28) for a gas turbine engine (10) comprises a frame (100), a vane fairing (108), a heat shield (124, 126, 128), and a serpentine cooling path. The frame has an outer ring (102) and an inner ring (104) connected by a hollow strut (106) with a radial service line passage (132). The vane fairing is disposed between the inner ring and the outer ring to define a core airflow path. The heat shield is disposed between the vane fairing and the frame. The serpentine cooling flow path passes through and around the outer ring, the inner ring, and the plurality of struts.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: June 26, 2018
    Assignee: United Technologies Corporation
    Inventors: Jonathan Ariel Scott, Albert Veninger
  • Patent number: 10006293
    Abstract: A part formed using an metal additive manufacturing process such as a turbine airfoil with an oversized feature such as an oversized hole, where the oversized hole is filled with a preform having a shape of a normal sized hole and secured within the part using a braze or weld material, and where the preform is removed to leave within the part the normal sized hole. The preform is made of a refractory material that can be removed from the part by exposure to oxygen.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: June 26, 2018
    Assignee: Florida Turbine Technologies, Inc.
    Inventor: Russell B Jones
  • Patent number: 10006299
    Abstract: A nozzle for use in an air cycle machine has a plate. A plurality of vanes extend away from the plate. The plurality of vanes extend for a height away from the plate. A width is defined as the closest distance between two adjacent vanes. A ratio of the height to the width is between 3.253 and 3.800. An air cycle machine and a method of repair are also disclosed.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: June 26, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Christopher McAuliffe
  • Patent number: 10005159
    Abstract: Method of trimming weld flash from a weld joint formed between a first component and a second component. The method provides a rotary shear tool having a rotary blade and a second blade. The second blade may be a fixed blade. The method further includes shearing the weld flash from the weld joint by passing the weld flash between the rotary blade and second blade of the rotary shear tool. Also provides a rotary shear tool for trimming weld flash from a weld joint formed between a first component and a second component. The rotary shear tool includes: a rotary blade; a second blade; and a mounting portion for mounting the rotary shear tool on a robotic arm.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: June 26, 2018
    Assignee: ROLLS-ROYCE plc
    Inventor: Paul Philip Sweeting
  • Patent number: 10001032
    Abstract: A hollow portion is formed inside a stator blade. A slit having an inlet opening on a pressure surface of the stator blade facing wet steam flow is formed that communicates with the hollow portion in the axial direction of the stator blade. The hollow portion communicates with a region having a lower pressure than the flow field of the wet steam flow. The pressure in the hollow portion is reduced to introduce water film flow formed from water drops on the pressure surface of the stator blade to the slit. The slit is formed at a downstream side end, in the flow direction of the wet steam flow, of the hollow portion, and the stator blade trailing edge side wall surface of the slit is at an acute angle to a leading edge side reference plane of the pressure side of the stator blade.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: June 19, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Ryo Takata, Soichiro Tabata