Patents Examined by Sabbir Hasan
  • Patent number: 11125247
    Abstract: There is disclosed a centrifugal compressor including an impeller rotatable about an axis and a diffuser downstream of the impeller. The diffuser has walls delimiting flow passages. Plasma actuators are positioned adjacent the walls and are operatively connectable to a source of electricity. The plasma actuators have a first electrode, a second electrode, and a dielectric layer therebetween. The first electrode is upstream of the second electrode. The first electrode is exposed to the flow passage. The second electrode is shielded from the flow passage by the dielectric layer. The plasma actuators are operable to generate an electric field through the dielectric layer. The plasma actuators are located closer to inlets of the flow passage than to outlets of the flow passages. A method of operating the compressor is disclosed.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 21, 2021
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Martin Drolet
  • Patent number: 11118566
    Abstract: Soundness and a sign of abnormality of a pitch mechanism of a wind turbine blade is quantitatively diagnosed. A method of diagnosing a wind turbine power generation facility includes the steps of: rotating and fixing a wind turbine rotor including at least one wind turbine blade; providing, in a state where the wind turbine rotor is fixed, a pitch control command value to a pitch mechanism that changes a pitch angle of the wind turbine blade, to increase or reduce the pitch angle such that the pitch angle reaches a pitch angle target value from a reference angle; acquiring an actual pitch angular velocity or an actual pitch angle of the wind turbine blade corresponding to the pitch control command value; and diagnosing soundness of the pitch mechanism based on correlation between the acquired actual pitch angular velocity or the acquired actual pitch angle, and the pitch control command value.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: September 14, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Mitsuya Baba
  • Patent number: 11118477
    Abstract: A turbine ring assembly includes both a plurality of ring sectors made of ceramic matrix composite material forming a turbine ring, and also a ring support structure. Each ring sector includes a portion forming an annular base with an inner face defining the inside space of the turbine ring and an outer face from which an attachment portion of the ring sector extends for attaching it to the ring support structure. The ring support structure includes two annular flanges between which the attachment portion of each ring sector is held. Each annular flange of the ring support structure presents at least one sloping portion bearing against the attachment portions of the ring sectors, the sloping portion, when observed in meridian section, forming a non-zero angle relative to the radial direction and relative to the axial direction.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: September 14, 2021
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Clement Roussille, Gael Evain, Adele Lyprendi, Lucien Quennehen
  • Patent number: 11105336
    Abstract: The present invention is provided with: an annular hub 7 having a circularly formed axial cross-section; a plurality of first blades 8 that are arranged on the outer circumferential surface of the hub 7; and a plurality of second blades 9 that are arranged closer to the downstream-side in the flow direction of fluid than the rear edges 8b of the first blades 8, in the outer circumferential surface of the hub 7, wherein the number of the second blades 9 is less than a double that of the first blades 8.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: August 31, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventor: Kenichiro Iwakiri
  • Patent number: 11073034
    Abstract: A seal assembly extends along an axis and seals an axial (and/or radial) gap between a first component and a second component. The seal assembly includes a seal carrier and a seal element. The seal element extends axially (and/or radially) between a first portion and a second portion. The first portion of the seal element is slidingly arranged within a slot in an axial end (or a radial side) of the seal carrier. The second portion of the seal element is configured to axially (and/or radially) engage the second component.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: July 27, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Paul M. Lutjen, Timothy M. Davis, Mark J. Rogers
  • Patent number: 11067086
    Abstract: A centrifugal pump (7), with one or more pumping stages, includes a pressure controlled valve (15) inside the pump (7) for supporting self-priming, the pressure controlled valve (15). The pressure controlled valve (15) includes a pretensioned leaf spring (17) and a valve seat (18). The leaf spring (17) has an opened position and a closed position. In the open position the leaf spring (17) is distanced from the valve seat (18). In the closed position the leaf spring (17) closes the valve seat (18). The leaf spring (17) and valve seat (18) are arranged for soft closing.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: July 20, 2021
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Janus Lukas Sierakowski-Larsen, Ejgil Koustrup
  • Patent number: 11067056
    Abstract: A wind turbine blade bushing system for arrangement in a root end of a wind turbine blade is described. The wind turbine blade bushing system comprises a threaded element for retaining a mounting bolt for a wind turbine blade, the threaded element being formed from a first material; and an anchor element for arrangement at the root end of the wind turbine, wherein the anchor element acts to at least partly retain the threaded element in the wind turbine blade, the anchor element being formed from a second material. The first material has a higher strength and higher fracture toughness than the second material.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: July 20, 2021
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Torben Krogsdal Jacobsen, Roel Schuring, Dhinagaran Ramachandran, Madhava Prasad Koteshwara, Utsa Majumder, Casper Kildegaard, Madhusudhan N Veerappa, Torben Lindby, Prajna Aachar, Morten Olesen, Aanchal Saini
  • Patent number: 11066951
    Abstract: The present disclosure provides a wear liner for a stator vane that has a first hook and a second hook that are connected by a base, providing in a generally S-shaped channel. The wear liner includes an outer surface that is adapted to lie against a first component and an inner surface that is adapted to lie against a second component. The first hook of the wear liner includes a first engaging end that is adapted to engage a first component, while the second hook is adapted to engage the second component. The first component may comprise a vane foot and the second component may comprise a slot for receiving and securing the vane foot.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: July 20, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: David Biolsi, Thomas Freeman
  • Patent number: 11060527
    Abstract: A fan system includes a rotor having plurality of blades and a ring airfoil, the plurality of blades being rotatably joined to a hub and the ring airfoil. The fan system may include a second contra-rotationally disposed rotor having a plurality of blades and a ring airfoil. The first and second ring airfoils having a cambered shape and an angle of attack between about ?5 degrees and about 45 degrees. Passive leading edge slats are attached to the ring airfoil and are configured to open and close using springs.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: July 13, 2021
    Assignee: Rolls-Royce Corporation
    Inventors: Bronwyn Power, Jonathan M. Rivers
  • Patent number: 11047397
    Abstract: A gas turbine engine includes a circumferential array of stator vanes that have first and second vanes with different vibrational frequencies than one another. The first vanes are arranged in circumferentially alternating relationship with the second vanes.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: June 29, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Richard K. Hayford, Robert J. Morris, Charles H. Warner, Charles P. Gendrich
  • Patent number: 11047360
    Abstract: An apparatus for energy extraction from fluid flow including an assembly including a plenum. The assembly further includes an aperture extending from an exterior surface to the plenum to allow flow therethrough. The apparatus further includes a channel including an inlet and an outlet in fluid communication with the plenum. The apparatus yet further includes an energy extraction device. The assembly is configured to create a pressure differential between the plenum and the inlet of the channel. The pressure differential causes fluid flow from the inlet of the channel to the plenum. The energy extraction device is configured to extract energy from the fluid flow. The apparatus additionally includes a control system configured to modify the pressure differential to control the fluid flow between the inlet of the channel and the plenum based on a characteristic of an exterior environment.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: June 29, 2021
    Assignees: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Brent C. Houchens, Myra L. Blaylock, David Vaughn Marian, David Charles Maniaci, Carsten Westergaard
  • Patent number: 11035383
    Abstract: A fan shroud includes a bell mouth portion and a rectangular portion. The bell mouth portion includes a circular wall that defines a discharge port and accommodates a propeller fan. The rectangular portion defines a suction port and includes a close wall close to the circular wall, and a farther wall farther from the circular wall than the close wall is from. The close wall includes a closest portion closest to the circular wall in the close wall, and a pair of connection portions connected to the farther wall. The closest wall is between the pair of connection portions. The fan shroud includes an opening portion extending through the rectangular portion from inside to outside of the rectangular portion. At least one of the pair of connection portions includes the opening portion, and the closest portion does not include the opening portion.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 15, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kazuhiro Takeuchi, Masashi Matsukawa
  • Patent number: 11028823
    Abstract: The present invention relates to a wind turbine blade (10) comprising two or more serrations (100a, 100b, 100c) provided along a section (S) of the trailing edge (20). The section (S) extends spanwise from the tip end (14) towards the root end (16) for up to 5% of the total blade length (L), The serration (100a) closest to the tip end has a height (H) and/or width (W) greater than the respective height (H) and/or width (W) of at least one other serration (100b, 100c) in said section. The present invention also relates to a wind turbine (2) comprising at least one wind turbine blade (10) of the present invention and to a serrated panel (66).
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: June 8, 2021
    Assignee: LM WIND POWER US TECHNOLOGY APS
    Inventors: Carlos Arce, Jesper Madsen, Jordy Hertel Nilsson Van Kalken
  • Patent number: 11028731
    Abstract: In a steam turbine including a rotor including a free side end fixed by a journal bearing in a radial direction and a fixed side end fixed by a thrust bearing in an axial direction, and a casing including a fixed side end fixed by the thrust bearing in the axial direction, a casing position adjustment device is configured to adjust an axial position of the casing with respect to the rotor due to thermal expansion. The casing position adjustment device includes: a low-pressure casing end plate, which is an end plate oriented to a free side in the axial direction in a low-pressure casing of the casing, and has a diaphragm deformable in the axial direction; and actuators, which are configured to deform the low-pressure casing end plate so that the low-pressure casing end plate extends toward the free side in the axial direction.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: June 8, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Takumi Hori, Hidekazu Uehara, Kentarou Saeki, Katsuhisa Hamada
  • Patent number: 11022002
    Abstract: An attachment body for a blade outer air seal includes a leading edge connected to a trialing edge by a radially inner wall and a radially outer wall. At least one forward hook extends from the radially outer wall. At least one aft hook extends from the radially outer wall. At least one post extends from the radially outer surface and has a blade outer air seal (BOAS) guide surface.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: June 1, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Thomas E. Clark, Ken F. Blaney
  • Patent number: 11015616
    Abstract: A liquid heating pump includes an impeller chamber having an impeller, which can be rotatably driven, and a diffusor chamber and/or pressure chamber arranged axially downstream in the flow direction and having a stationary diffusor. A heating device is associated with the diffusor and/or pressure chamber. The diffusor has a main body, in particular in the shape of a circular cylinder. The main body has a front wall on which a guide blade portion is arranged which axially protrudes in a direction of the impeller into a liquid ejection region of the impeller arranged around an outer periphery of the impeller and which extends away from the liquid ejection region outwardly toward an axial outer casing of the main body, which axial outer casing is arranged radially further outwardly than the liquid ejection region of the impeller.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: May 25, 2021
    Assignee: BSH Hausgeräte GmbH
    Inventors: Igor Hoffmann, Stephan Lutz, Hans-Holger Pertermann, Markus Wecker
  • Patent number: 11015467
    Abstract: A space filler for forming a fibrous preform may comprise an additively manufactured ceramic material. The additively manufactured ceramic material may define a plurality of pores. A shape of the additively manufactured ceramic material may complement a shape of a void formed by fibrous regions of the fibrous preform.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: May 25, 2021
    Assignee: Raytheon Technologies Corporation
    Inventor: Kathryn S. Read
  • Patent number: 11002147
    Abstract: A gas turbine engine includes a case, a stator vane, and a retainer. The case has a first surface, a second surface, a third surface extending between the first surface and the second surface, and a hook extending from the second surface and disposed opposite the third surface. The stator vane includes a shroud body and a first flange. The retainer is arranged to seat the first flange within a first slot defined between the hook and the second surface and secure the shroud body to the case.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: May 11, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: David M. Dyer
  • Patent number: 10995769
    Abstract: A ceiling fan or similar air-moving device can include a motor for rotating one or more blades to drive a volume of air about a space. The blade can include a body having an outer surface with a flat top surface and a flat bottom surface, and a side edge. A curved transition can extend between one of the flat top surface or the flat bottom surface, and the side edge. The curved transition can include an elliptical curvature.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: May 4, 2021
    Assignee: Hunter Fan Company
    Inventors: Bobby Neal Norwood, Charles William Botkin
  • Patent number: 10995620
    Abstract: The disclosure relates to turbomachine components which include one or more coating-capturing features for thermal insulation. A turbomachine component may include: a body having an exterior surface positioned within a hot gas path (HGP) section of a turbomachine; and a coating-capturing feature mounted on the exterior surface of the body and in thermal communication with the HGP section of the turbomachine, wherein the coating-capturing feature comprises: a first member positioned on the exterior surface of the body, the first member having at least one outer sidewall defining a first perimeter of the coating-capturing feature, a second member positioned on the first member and having at least one outer sidewall defining a second perimeter of the coating-capturing feature, wherein the first member separates the second member from the exterior surface of the body, and an indentation positioned between the first and second members.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 4, 2021
    Assignee: General Electric Company
    Inventors: Jonathan Dwight Berry, Srikanth Chandrudu Kottilingam