Patents by Inventor Johann GEPPERT

Johann GEPPERT has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10711628
    Abstract: A rotor member is described for a gas turbine that is adapted for rotating about a central axis, the rotor member being a blisk having a rotor blade row that extends around the central axis or a rotor disk having a mounting portion for installing rotor blades of a rotor blade row that extends around the central axis, and being axially offset from the rotor blade row and/or the mounting portion and, extending coaxially, having at least one annular and axially asymmetrical sealing fin that has a radially outer tip portion having a front flank facing the rotor blade row and/or the mounting portion, and an opposite flank facing away from the rotor blade row and/or the mounting portion; the front flank being less steep than the opposite flank; a turbine and a compressor having such a rotor member, and a method for manufacturing such a rotor member having at least one sealing fin coating.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 14, 2020
    Assignee: MTU Aero Engines AG
    Inventors: Lothar Albers, Thomas Binsteiner, Johann Geppert, Stefan Herbst, Manuel Hertter, Alexander Scharf, Robert Winsy, Stephen Royston Williams
  • Patent number: 10458434
    Abstract: A rotor stage (200) for a turbomachine, including a plurality of rotor blades (9), a rotor main body (7) having at least two rotor arms (3) and a balancing assembly (1) for balancing the rotor stage (200). The rotor arm (3) configured downstream from the rotor main body (7) features the balancing assembly (1). The balancing assembly (1) is configured between the axial end region of the rotor arm (3) and the rotor disk (27) of the rotor main body (7). Furthermore, a rotor drum (17, 18) for a turbomachine and a rotor (1000) for a turbomachine.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: October 29, 2019
    Assignee: MTU Aero Engines AG
    Inventors: Thomas Binsteiner, Lothar Albers, Johann Geppert
  • Publication number: 20180112548
    Abstract: A rotor member is described for a gas turbine that is adapted for rotating about a central axis, the rotor member being a blisk having a rotor blade row that extends around the central axis or a rotor disk having a mounting portion for installing rotor blades of a rotor blade row that extends around the central axis, and being axially offset from the rotor blade row and/or the mounting portion and, extending coaxially, having at least one annular and axially asymmetrical sealing fin that has a radially outer tip portion having a front flank facing the rotor blade row and/or the mounting portion, and an opposite flank facing away from the rotor blade row and/or the mounting portion; the front flank being less steep than the opposite flank; a turbine and a compressor having such a rotor member, and a method for manufacturing such a rotor member having at least one sealing fin coating.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 26, 2018
    Inventors: Lothar Albers, Thomas Binsteiner, Johann Geppert, Stefan Herbst, Manuel Hertter, Alexander Scharf, Robert Winsy
  • Publication number: 20180087534
    Abstract: A rotor stage (200) for a turbomachine, including a plurality of rotor blades (9), a rotor main body (7) having at least two rotor arms (3) and a balancing assembly (1) for balancing the rotor stage (200). The rotor arm (3) configured downstream from the rotor main body (7) features the balancing assembly (1). The balancing assembly (1) is configured between the axial end region of the rotor arm (3) and the rotor disk (27) of the rotor main body (7). Furthermore, a rotor drum (17, 18) for a turbomachine and a rotor (1000) for a turbomachine.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 29, 2018
    Inventors: Thomas Binsteiner, Lothar Albers, Johann Geppert
  • Publication number: 20170370238
    Abstract: A blisk 10 for a gas turbine includes a rotor blade row 12 extending around a central axis X and, axially spaced therefrom and extending coaxially therewith, at least one annular sealing fin 11. The sealing fin has a radially outer annular portion 111 that is thickened as compared to a radially more inward annular portion 113. A compressor 1 includes a rotor and a casing 30. The casing includes at least one stator vane row having at least one abradable liner. The rotor includes at least one blisk 10, whose at least one sealing fin 11 at least partly engages in the abradable liner. A turbine is constructed analogously. A method for manufacturing a blisk 10 for a gas turbine includes producing a blisk 10 having least one annular sealing fin 11, as well as applying a coating 116 to a radially outer surface 115 of a thickened annular portion 111 of sealing fin 11.
    Type: Application
    Filed: June 22, 2017
    Publication date: December 28, 2017
    Inventors: Johann Geppert, Manuel Hertter
  • Patent number: 9605541
    Abstract: A bladed rotor for a turbomachine, in particular a gas turbine, having a plurality of blades distributed around the circumference thereof; the blade distribution being made up of a natural-number sector count of first angular sectors and second angular sectors; a first blade count of first blades being arranged in the first angular sectors, and a second blade count of second blades being arranged in the second angular sectors, said second blade count being different from said first blade count; and the sector count being odd (Z=2n+1, n=1, 2, 3, . . . ) and/or greater than two (Z>2).
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: March 28, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Johann Geppert, Peter Eibelshaeuser
  • Patent number: 9399918
    Abstract: A blade for a continuous-flow machine is disclosed, especially an aircraft engine, whereby, starting from the middle section, the cross section of the blade tip is reduced with respect to the middle section, at least over a front partial section in the direction of the leading edge and over at least a rear section in the direction of the trailing edge, and a continuous-flow machine having at least one row of blades including such blades is also disclosed.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: July 26, 2016
    Assignee: MTU Aero Engines GmbH
    Inventors: Johann Geppert, Peter Eibelshaeuser, Heinz Rauschmair
  • Publication number: 20140044553
    Abstract: A blade for a continuous-flow machine is disclosed, especially an aircraft engine, whereby, starting from the middle section, the cross section of the blade tip is reduced with respect to the middle section, at least over a front partial section in the direction of the leading edge and over at least a rear section in the direction of the trailing edge, and a continuous-flow machine having at least one row of blades including such blades is also disclosed.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Inventors: Johann GEPPERT, Peter Eibelshaeuser, Heinz Rauschmair
  • Publication number: 20140044546
    Abstract: A bladed rotor for a turbomachine, in particular a gas turbine, having a plurality of blades distributed around the circumference thereof; the blade distribution being made up of a natural-number sector count of first angular sectors and second angular sectors; a first blade count of first blades being arranged in the first angular sectors, and a second blade count of second blades being arranged in the second angular sectors, said second blade count being different from said first blade count; and the sector count being odd (Z=2n+1, n=1, 2, 3, . . . ) and/or greater than two (Z>2).
    Type: Application
    Filed: July 25, 2013
    Publication date: February 13, 2014
    Applicant: MTU Aero Engines AG
    Inventors: Johann GEPPERT, Peter Eibelshaeuser