Patents Examined by Kayla McCaffrey
  • Patent number: 11066998
    Abstract: A compressor rotor includes a first outer cavity formed in a rotor main body and into which air on a high-pressure side of blades is to be introduced, a first inner cavity formed in the rotor main body on an inner side in a radial direction of the first outer cavity; and a first communication passage which connects the first outer cavity and the first inner cavity to each other in the radial direction of the first outer cavity. Along an entire length of the first communication passage from the first outer cavity to the first inner cavity, the first communication passage is inclined toward a forward side of a rotation direction of the rotor main body.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: July 20, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshiko Oya, Yoshiyuki Okabe, Masato Araki
  • Patent number: 11041506
    Abstract: Disclosed are: a blower fan capable of reducing noise and power consumption; and an air conditioner having the same. The present device comprises: a hub connected to a driving member so as to receive rotating power; and a plurality of wings radially arranged along the circumference of the hub, wherein the plurality of wings can comprise: uneven parts formed at trailing edges, which are the rear edge portions of each wing, with respect to the rotational direction thereof; and tail wing parts formed on the outer sides of the uneven parts so as to have convex parts protruding farther than the uneven parts.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: June 22, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-ghun Kim, Keun-jeong Jang, Yong-ho Seo, Hyeong-joon Seo, Eun-sung Jo
  • Patent number: 11035243
    Abstract: A seal assembly for a gas turbine engine according to an example of the present disclosure includes, among other things, a support mountable to an engine static structure. The support has a main body extending axially between leading and trailing edge portions and circumferentially between opposed mate faces, and the main body includes a pair of opposed retention hooks extending inwardly from the leading and trailing edge portions to bound an elongated groove extending circumferentially between the opposed mate faces. A seal has a sealing portion that extends from an engagement portion. The sealing portion has a sealing face that extends circumferentially between first and second mate faces. An overwrap has one or more plies that follow a perimeter of the engagement portion to define an interface between the retention hooks and the engagement portion. A method of sealing is also disclosed.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: June 15, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Thomas E. Clark, Kevin D. Tracy
  • Patent number: 10982678
    Abstract: A gas turbine engine includes a fan drive turbine driving a fan rotor through a main gear reduction. A primary lubricant system supplies lubricant to the main gear reduction. An auxiliary oil pump supplies oil to the main gear reduction. An auxiliary pump epicyclic gear train drives the auxiliary pump when the fan rotor is rotating in either direction. The main gear reduction is separate from the auxiliary pump epicyclic gear train.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: April 20, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: David Barger, Joseph H. Polly
  • Patent number: 10968767
    Abstract: A variable vane actuation system of a gas turbine engine is provided. The variable vane actuation system including: a variable vane; a vane stem operably associated with the variable vane, wherein the variable vane is configured to rotate with the vane stem; a vane arm having vane stem end and a vane pin end opposite the vane stem end, the vane arm being operably connected to the vane stem at the vane stem end; and a rotational variable differential transformer operably connected to the vane stem, the rotational variable differential transformer configured to detect an amount of rotation of the vane stem.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: April 6, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: William S. Pratt, Martin Richard Amari, Steven D. Roberts, Ryan M. Stanley
  • Patent number: 10961864
    Abstract: A passive flow modulation device according to an embodiment includes: a pressure sensitive main valve controlling a flow of a cooling fluid from a first area to a second area through an orifice; and a temperature sensitive pilot valve coupled to the pressure sensitive main valve, the temperature sensitive pilot valve configured to open at a predetermined temperature in the first area, causing a pressurization of the pressure sensitive main valve, wherein the pressurization of the pressure sensitive main valve actuates the pressure sensitive main valve to an open position, allowing the cooling fluid to flow from the first area to the second area through the orifice.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: March 30, 2021
    Assignee: General Electric Company
    Inventors: Carlos Miguel Miranda, Stanley Kevin Widener
  • Patent number: 10954885
    Abstract: A flow guiding appliance of a turbomachine, in particular of an aircraft engine, for a partial exit flow of an outlet guide vane of a compressor, wherein, a flow guiding element delimits an annular channel about a shaft of the turbomachine. A frictional engagement connecting surface at the circumference of the flow guiding element connects the flow guiding element to another structural component of the turbomachine. The frictional engagement connecting surface with a closed enveloping surface can be inserted in a deformed state into the structural component with a circular cylindrical sealing surface with at least two opposite points. The at least two points of the closed enveloping surface are arranged in at least two opposite frictionally engaged contact areas of the circular cylindrical sealing surface following deformation. The invention also relates to a method for creating a flow guiding element.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: March 23, 2021
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Igor Sikorski, Jason Phillips
  • Patent number: 10946955
    Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The proprotor hub assembly includes a hook receiver. The propulsion assembly includes a gimbal lock positioned about the mast. The gimbal lock includes a locking ring and a gimbal lock hook. The gimbal lock is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. The gimbal lock enables the gimballing degree of freedom in the disengaged position and disables the gimballing degree of freedom in the engaged position. The gimbal lock hook is hooked to the hook receiver in the engaged position to secure the locking ring to the proprotor hub assembly.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: March 16, 2021
    Assignee: Textron Innovations Inc.
    Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
  • Patent number: 10935046
    Abstract: A gas turbine engine fan case may comprise a plurality of wound layers that form a laminate and have a nominal radial fan case thickness, where the laminate includes a plurality of discrete fan case radial locations comprising a plurality of radially stacked composite plies that form a radial integral build up in comparison to the nominal radial fan case thickness.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: March 2, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: David R. Lyders, Colin J. Kling
  • Patent number: 10933985
    Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The propulsion assembly includes a gimbal lock assembly positioned about the mast and including a plurality of radially outwardly extending and circumferentially distributed rollers. The gimbal lock assembly is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. In the disengaged position, the gimbal lock assembly enables the gimballing degree of freedom. In the engaged position, the rollers of the gimbal lock assembly contact the proprotor hub assembly to disable the gimballing degree.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: March 2, 2021
    Assignee: Textron Innovations Inc.
    Inventors: Troy Cyril Schank, Andrew Ryan Maresh, Chyau-Song Tzeng
  • Patent number: 10927837
    Abstract: A centrifugal pump includes a selectable regenerative style pumping element, including a regenerative pump rotor and at least one side wall flow channel formed by a rotating disc. The regenerative pumping element is selectable between a first state in which the disc does not rotate with the impeller and a second state in which the disc rotates with the impeller.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: February 23, 2021
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: Martin A. Clements
  • Patent number: 10890073
    Abstract: A turbine blade (43a) is provided with a blade main body (51) and a tip shroud (52). The blade main body (51) is provided with a leading edge-side cooling passage (64), a trailing edge-side cooling passage (67), and a middle cooling passage (65). The tip shroud (52) is provided with a first discharge passage (72), a second discharge passage (73), and a third discharge passage (74). The first discharge passage (72) discharges a cooling medium flowing through the leading edge-side cooling passage (64). The second discharge passage (73) discharges a cooling medium flowing through the trailing edge-side cooling passage (67). The third discharge passage (74) discharges a cooling medium flowing through the middle cooling passage (65).
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: January 12, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Keita Takamura, Satoshi Hada, Hidekatsu Atsumi
  • Patent number: 10871076
    Abstract: A rotating unit of a steam turbine includes a rotor; a bucket coupled to the rotor to convert fluid energy into mechanical work, the coupled bucket being pre-twisted at a predetermined angle, the bucket having a base surface facing a point of coupling between the rotor and the bucket; and bucket support means, provided at the point of coupling between the rotor and the bucket, for supporting a twisted state of the bucket based on the coupling between the rotor and the bucket, thereby enabling the twisting of the bucket to be maintained during operation. In a steam turbine including the rotating unit, it is possible to reduce vibration occurring during operation and to increase the contact force between a cover formed at the blade tip of the bucket and a cover of another bucket to prevent a leakage of steam between adjacent covers.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: December 22, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Seok Jin Jang
  • Patent number: 10830092
    Abstract: Rotor thrust balancing systems for turbomachines and methods of using the same are generally disclosed. For example, a rotor thrust balancing system for a turbomachine, wherein the turbomachine defines a centerline extending the length of the turbomachine. The system includes a rotating drive shaft, a thrust bearing, and a first waveguide sensor. The rotating drive shaft couples a turbine section and a compressor section of the turbomachine. The thrust bearing supports the rotating drive shaft of the turbomachine. The thrust bearing includes a plurality of ball bearings, an inner race coupled to the rotating drive shaft, and an outer race coupled to a fixed structure. The first waveguide sensor is coupled to the outer race at a first end of the waveguide sensor. The waveguide sensor communicates a vibrational frequency from the thrust bearing to a second end of the waveguide sensor.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: November 10, 2020
    Assignee: General Electric Company
    Inventors: Kyle Robert Snow, Andrew Michael Tompkins, Andrew Michael Watson, Philip Joseph Ogston, Christopher Michael Thompson
  • Patent number: 10823191
    Abstract: The present disclosure is directed to a gas turbine engine including a first frame comprising a first bearing assembly, a second frame comprising a second bearing assembly, and a compressor rotor. A first stage compressor airfoil is defined at an upstream-most stage of the compressor rotor. The compressor rotor is rotatable via the first bearing assembly and the second bearing assembly. The first stage compressor airfoil is disposed between the first bearing assembly and the second bearing assembly.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: November 3, 2020
    Assignee: General Electric Company
    Inventors: Veeraraju Vanapalli, Bhaskar Nanda Mondal, Rajendra Mahadeorao Wankhade, Ramana Reddy Kollam
  • Patent number: 10801339
    Abstract: A variable pitch fan assembly includes variable pitch fan blades circumscribed about engine centerline axis coupled to a drive shaft centered about the engine centerline axis. Each blade pivotable about pitch axis perpendicular to centerline axis and having blade turning lever connected thereto. One or more linear actuators non-rotatably mounted parallel to engine centerline axis and operably linked to fan blades for pivoting fan blades and connected to spider ring through thrust bearings for transmission of axial displacement of non-rotatable actuator rods of actuators while the fan blades are rotating. Spider arms extending away from spider ring towards blade roots and each spider arm connected to one of the turning levers. Turning levers may be connected and caromed to spider arms by pin and slot joint. Each spider arm may include joint pin disposed through joint slot of turning lever. Joint slot may be angled or curved.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: October 13, 2020
    Assignee: General Electric Company
    Inventors: Aldo Daniel Lopez Guzman, Alberto del Angel Duran, Daniela Martinez Arteaga, Carla Garcia Lopez de Llergo, Ileana Prisabel Corona Acosta
  • Patent number: 10801352
    Abstract: The invention concerns a turbine for a gas turbine comprising a blade, a vane and an abradable lip attached to the blade or to the vane, wherein the blade and the vane are separated by a gap and the abradable lip extends part of the distance across the gap. Embodiments include the addition of an abrasive layer attached on the other side of the gap from the abradable lip. A method of manufacturing is also described.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: October 13, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Guillaume Wagner, Herbert Brandl, Emanuele Facchinetti, Matthias Hoebel, Carlos Simon-Delgado
  • Patent number: 10801506
    Abstract: A fixing bolt for a stationary member, the bolt extending through and fixing a plurality of stationary members in a multistage centrifugal compressor, includes a head portion, a columnar portion connected to the head portion, and a threaded portion connected to the columnar portion. The columnar portion includes one or more large diameter parts and a plurality of small diameter parts, the one or more large diameter parts each corresponding to a position of an antinode of a primary vibration mode of the fixing bolt for the stationary member, or to the position of the antinode of the primary vibration mode and positions of antinodes of a secondary vibration mode of the fixing bolt for the stationary member, and each of the plurality of small diameter parts having a diameter smaller than each of the large diameter parts.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: October 13, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Yoshiaki Shoji
  • Patent number: 10794213
    Abstract: A compressor shroud assembly in a turbine engine having a dynamically moveable shroud for encasing a rotor segment. The rotor segment comprises a bladed disc. The compressor shroud assembly maintains a clearance gap between the shroud and the blade tips of the bladed disc. The assembly comprises a static compressor casing, a shroud mounted to the casing, and an actuator mounted to the casing. The shroud comprises a flowpath boundary member spaced radially inward from the casing, the flowpath boundary member being moveable relative to the casing in a radial direction. The actuator is coupled to the shroud for effecting the movement of the flowpath boundary member.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: October 6, 2020
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventors: Douglas D. Dierksmeier, Edward C. Rice, Ryan C. Humes
  • Patent number: 10794193
    Abstract: An air foil includes a body and a filler. The body may include a chamber formed therein and includes a first metallic material. The filler may at least partially occupy the chamber of the body and may include a second metallic material. The second metallic material may have a comparatively more negative electrode potential than the first metallic material.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: October 6, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Daniel Bernard Kupratis, Mary Colby, Paul R Hanrahan, Frederick M Schwarz