Patents Examined by Igor Kershteyn
  • Patent number: 9995311
    Abstract: A centrifugal fan is provided that includes a main plate configured to be rotated about a rotational axis, a shroud, having a suction opening, and a plurality of blades arranged in a circumferential direction between the main plate and the shroud to allow air suctioned in through the suction opening to flow from a front edge to a rear edge of each blade. Assuming a first cross section, a second cross section, a third cross section, and a fourth cross section of each blade sequentially taken at layers from the shroud to the main plate, a front edge of the first cross section is located farther from the rotational axis than a front edge of the fourth cross section, and a rear edge of the first cross section is located closer to the rotational axis than a rear edge of the fourth cross section.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: June 12, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Sang Yuk Son, Choon Myun Chung, Tae Man Yang
  • Patent number: 9995304
    Abstract: A centrifugal fan includes an impeller. The impeller includes a hub, a plurality of connecting structures, an annular structure and a plurality of blades. The hub includes a circumferential surface. The connecting structures are disposed on the circumferential surface of the hub at intervals. Any adjacent two of the connecting structures define a first minimum distance on the circumferential surface. At least two first minimum distances are not equal. The annular structure is connected to the connecting structures. The blades are disposed on the annular structure at intervals.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: June 12, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: Hsin-Chen Lin
  • Patent number: 9995171
    Abstract: A mid-turbine frame for a gas turbine engine includes an outer frame case and an inner frame case. At least one spoke connects the outer frame case to the inner frame case. The spoke includes an inlet passage with at least one branch that extends in an axial direction.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: June 12, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Andrew D. Burdick, Anthony P. Cherolis, Christopher Treat, Jonathan Lemoine, Robert Russell Mayer, Jorge I. Farah, John H. Mosley
  • Patent number: 9995178
    Abstract: A turbomachine component is provided having at least two sub-components that are separated by a parting joint and each have a sealing surface at the parting joint, at least one of the two sealing surfaces being convex in order to form a linear contact of the two sealing surfaces. At least one of the sealing surfaces has a coating on it which includes a hard material, is a maximum of 30 ?m thick and is applied using a vapour deposition method, or a coating which includes a chrome-containing alloy, is a maximum of 30 ?m thick and is applied by a vapour deposition method, or is a maximum of 300 ?m thick and applied using a thermal spraying method.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: June 12, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Jorg Schurhoff
  • Patent number: 9995271
    Abstract: A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a plurality of elongated bushings 7 with an inner thread 22 and which are embedded interspaced in the fiber-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads 22. The bushings 7 are formed conically tapering from a second end towards a first end thereof, the first end of the bushing 7 being arranged at the end face of the root region.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: June 12, 2018
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Martin Dahl, Bjarne Krab Mortensen, Benjamin Hornblow
  • Patent number: 9988918
    Abstract: An airfoil assembly for a turbine engine, comprising at least one airfoil having a leading edge and a trailing edge, a band having an inner side and an outer side and rigidly coupled to the at least one airfoil along a portion of an interface between the band and the at least one airfoil for providing at least a portion of support for the at least one airfoil, a relief located in the band at the leading edge or the trailing edge of the at least one airfoil and defining a stress relief gap between the band and the leading edge or trailing edge and a closure preventing airflow through the relief.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: June 5, 2018
    Assignee: General Electric Company
    Inventors: Shawn Patrick Riley, Abigail Rose Vaughn, Haiyun Hu
  • Patent number: 9988924
    Abstract: A gas turbine engine comprising first and second axially spaced turbine rotor stages (46, 48) and a turbine casing (56) radially outside the rotor stages. A first seal segment arrangement (58) forms a cavity (64) radially between the first turbine rotor stage (46) and the turbine casing (56). A first air source (82) is coupled to the first seal segment arrangement (58). A second seal segment arrangement (70) forms a cavity (74) radially between the second turbine rotor stage (48) and the turbine casing (56). A heating chamber (84) is provided radially between the second seal segment arrangement (70) and the turbine casing (56). A duct (86) is coupled between the first air source (82) and the heating chamber (84).
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: June 5, 2018
    Assignee: ROLLS-ROYCE PLC
    Inventors: Marko Bacic, Leo Vivian Lewis, Robert John Irving
  • Patent number: 9989073
    Abstract: A centrifugal fan having improved efficiency and noise reduction includes a hub configured to have a central part combined with a rotary shaft, a shroud spaced apart from the hub, and a plurality of blades provided between the hub and the shroud. The shroud includes outer circumferential parts each connecting the trailing edges of a plurality of respective adjacent blades. Each outer circumferential part is asymmetrically formed based on the center of the outer circumferential part.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: June 5, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Bonchang Hwang, Beomsoo Seo, Jihye Oh
  • Patent number: 9988141
    Abstract: A fluid interface device, such as an airfoil assembly, can include a device structure and at least one moveable band oriented such that the band moves in a direction of fluid flow. The at least one moveable band can be supported on the device structure such that an outer surface of the moveable band is exposed along the device structure and is capable of movement relative thereto such that a relative velocity can be maintained between the outer surface and the device structure. The fluid interface device can have a cross section that includes first and second boundary layer collision points disposed along one side of the device structure with at least one of said first and second boundary layer collision points formed by the endless band. An airplane, a wind turbine and a method are also included.
    Type: Grant
    Filed: August 6, 2011
    Date of Patent: June 5, 2018
    Assignee: Ecological Energy Company
    Inventor: Theodore M. Garver
  • Patent number: 9988932
    Abstract: Bi-cast turbine nozzles and methods for cooling the same are provided. The bi-cast turbine nozzle comprises an endwall. A vane is coupled to the endwall. The vane comprises an end portion and a leading edge and a trailing edge interconnected by a pressure sidewall and a suction sidewall. A slip joint is provided between the end portion and the endwall. A plurality of cooling holes is defined through the endwall. The plurality of cooling holes is disposed adjacent the periphery of the slip joint along the pressure sidewall of the vane and in proximity to the leading edge of the vane.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 5, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ardeshir Riahi, Lorenzo Crosatti
  • Patent number: 9981333
    Abstract: A method for manufacturing a rotary article comprises: providing a cold metal transfer welding apparatus comprising a welding torch; providing a rotary substrate; providing a digital representation of the rotary article having at least one internal flo passage; defining a welding path on the rotary substrate based on the digital representation; rotating the rotary substrate while depositing a filler metal layer by layer on the welding path of the rotary substrate to form the rotary article; and separating the rotary substrate from the rotary article.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: May 29, 2018
    Assignee: General Electric Company
    Inventors: Wen Tan, Renwei Yuan, Hongyuan Shen, Lei Yang, Yong Liu, Zhixue Peng, Yanmin Li, Guoshuang Cai
  • Patent number: 9982554
    Abstract: The invention relates to an assembly comprising a turbine engine casing and a bladed rotor wheel arranged therein. The casing presents an inside wall having a circumferential strip of abradable material. Facing the tips of the blades, the casing presents upstream the strip of abradable material, and downstream a circumferential groove. The strip of abradable material is defined downstream by the circumferential groove. The downstream end of the circumferential groove is in register with or downstream from the trailing edges of the blades. This arrangement optimizes the use of abradable material in the casings of the turbine engines.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: May 29, 2018
    Assignee: Snecma
    Inventors: Vincent Paul Gabriel Perrot, S├ębastien Cochon
  • Patent number: 9982543
    Abstract: An airfoil of a gas turbine engine having a hollow body defining at least one airfoil cavity therein, the hollow body defining an inner diameter and an outer diameter and a baffle positioned within the at least one airfoil cavity and extending over less than an entire length between the inner diameter and the outer diameter, the baffle configured to reduce the cross-sectional area within the at least one airfoil cavity. The at least one airfoil cavity includes a first portion having a length that is defined by an open cavity having a full cross-sectional area and a second portion having a length that is defined by a reduced cross-sectional area, the second portion being the length of the baffle within the at least one airfoil cavity.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: May 29, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Brandon W. Spangler
  • Patent number: 9982678
    Abstract: A blower housing, especially for a combustion air blower of a vehicle heater, includes a first housing area (14) with a delivery channel, which extends in a ring-shaped manner around a housing axis (A) and is open on an axial side, and a second housing area (16) for accommodating a blower motor (20). The second housing area (16) includes a housing wall (18), which is elongated in the direction of the housing axis (A) and surrounds a space accommodating the motor. A connection area (26) is provided in a central longitudinal area of the housing wall (18) in the direction of the housing axis (A) on an outer side of the housing wall (18) for establishing an electric connection with an actuating device (38).
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: May 29, 2018
    Assignee: Ebersp├Ącher Climate Control Systems GmbH & Co. KG
    Inventors: Michael Humburg, Hermann Eppler, Erwin Burner
  • Patent number: 9982685
    Abstract: A turbocharger compressor cover (114) including an inner shroud contour (122) configured to receive a compressor wheel (118) having a plurality of blades (140). Each blade (140) includes a leading edge (142), a contour edge (144), and a trailing edge (146). An inlet passage (124) leads to the inner shroud contour (122) and a circumferential groove (130) is formed around the inlet passage (124). The groove (130) includes a trailing edge (136) that is aligned with the outboard end (148) of the leading edge (142) of the blades. The compressor cover (114) includes an edge relief (138) formed along the groove trailing edge (136), such as a 45 degree chamfer. The circumferential groove (130) has a width and a depth, wherein the width and depth are approximately equal. The chamfer intersects the groove (130) approximately half the depth from the bottom of the groove (130).
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: May 29, 2018
    Assignee: BorgWarner Inc.
    Inventor: Prasanth Vengala
  • Patent number: 9982559
    Abstract: The present invention relates to a blade or vane for a turbomachine, having at least one impulse element housing with a first impact cavity, in which an impulse element is arranged with play of movement, wherein the impulse element housing has at least one second impact cavity, which is in alignment with the first impact cavity in a first matrix direction and in which an impulse element is arranged with play of movement, and has at least one third impact cavity, which is in alignment with the first impact cavity in a second matrix direction crosswise to the first matrix direction and in which an impulse element is arranged with play of movement.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: May 29, 2018
    Assignee: MTU AERO ENGINES AG
    Inventors: Andreas Hartung, Hermann Klingels, Patrick Wackers, Manfred Feldmann, Frank Stiehler, Markus Schlemmer
  • Patent number: 9975630
    Abstract: A rotor system of a rotary wing aircraft, such as a helicopter, is provided. The rotor system includes a rotor mast, a rotor hub and at least four, angularly generally even distributed rotor blades and swash plate struts for pitch and subsequently flap control. The rotor blades are pairwise to each other with zero offset to the rotor hub. The rotor hub is provided with a hollow bearing with at least one further bearing inside. A first pair of rotor blades is mounted on the hollow bearing and is pivotable in a first flap direction generally perpendicular to the rotation axis. A second pair of rotor blades is mounted inside the hollow bearing on the at least one further bearing and is pivotable in a second flap direction generally perpendicular to the first flap direction and the rotation axis, and independently of the first pair of rotor blades.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: May 22, 2018
    Assignee: AIRBUS HELICOPTERS DEUTSCHLAND GMBH
    Inventor: Kaspar Von-Wilmowsky
  • Patent number: 9976435
    Abstract: A rotating blade tip clearance system includes a control ring carrier defining a centerline axis. The control ring carrier has a connecting portion, a retaining portion radially inward of the connecting portion, and a flange connecting radially between the connecting portion and the retaining portion. The flange isolates the retaining portion of the control ring carrier from the thermal deflection of a case and assists in keeping the control ring carrier aligned about centerline axis A during thermal deflection. The retaining portion includes radially inner and outer diameter sides defining a retaining cavity therebetween. The system includes a control ring within the retaining cavity. The control ring has a different thermal response rate from the control ring carrier so that the control ring thermally deflects slower than the control ring carrier, thereby controlling the rate and/or extent of thermal deflection of the control ring carrier.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: May 22, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Mark Borja, Paul W. Palmer
  • Patent number: 9976540
    Abstract: A floating wind turbine structure comprising: a rotor carrying at least one blade, at least two support arms supporting a nacelle, said at least two support arms comprising upper and lower portions, said upper portions being associated with the nacelle and said lower portions being associated with means in the shape of floats, at least one support arm located upstream from the rotor relative to the wind direction, at least one support arm located downstream from the rotor relative to the wind direction, characterized in that the rotor is provided with a hollow shaft arranged to rotate about the nacelle.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: May 22, 2018
    Inventor: Marc Guyot
  • Patent number: 9976537
    Abstract: A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a cylindrical insert 7 embedded in the fiber-reinforced polymer so as to substantially follow the circumference of the root region. The cylindrical insert is provided with a number of mutually spaced threaded bores 12, 15 in a first end 9 thereof being accessible from the outside.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: May 22, 2018
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Martin Dahl, Bjarne Krab Mortensen, Benjamin Hornblow