Patents by Inventor Tomotake OGAWA

Tomotake OGAWA 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).

  • Seal structure for gas turbine rotor blade
    Patent number: 11753956
    Abstract: A seal structure for a gas turbine blade including a shank including a first side surface, a second side surface, and a bottom surface located radially inward from a fin. The first side surface has a recess movably housing a wedge seal, and a slot on the bottom surface as an insertion opening for a spline seal. The second side surface has a slot on the bottom surface as the insertion opening. The recess has an inclined surface extending straight radially inward and away from the first side surface. The wedge seal includes a wedge portion including a first wedge surface to be opposed to the inclined surface and a second wedge surface to be opposed to the second side surface of the adjacent rotor blade to form a wedge together with the wedge surface, and a weight portion positioned radially inward in the recess from the wedge portion.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: September 12, 2023
    Assignee: IHI Corporation
    Inventors: Yoshinori Soda, Tsuyoshi Takemoto, Jun Tateishi, Tomotake Ogawa, Misato Mori
  • Shield member and jet engine using the same
    Patent number: 10378378
    Abstract: A shield member is disposed over a gap between platform portions of adjacent turbine rotor blades, made from a ceramic matrix composite, and configured to shield the gap between the platform portions.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: August 13, 2019
    Assignee: IHI Corporation
    Inventors: Fumiaki Watanabe, Akane Ohbo, Hiroyuki Yagi, Tomotake Ogawa, Tsuyoshi Takemoto
  • SEAL STRUCTURE FOR GAS TURBINE ROTOR BLADE
    Publication number: 20190093493
    Abstract: A seal structure for a gas turbine blade including a shank including a first side surface, a second side surface, and a bottom surface located radially inward from a fin. The first side surface has a recess movably housing a wedge seal, and a slot on the bottom surface as an insertion opening for a spline seal. The second side surface has a slot on the bottom surface as the insertion opening. The recess has an inclined surface extending straight radially inward and away from the first side surface. The wedge seal includes a wedge portion including a first wedge surface to be opposed to the inclined surface and a second wedge surface to be opposed to the second side surface of the adjacent rotor blade to form a wedge together with the wedge surface, and a weight portion positioned radially inward in the recess from the wedge portion.
    Type: Application
    Filed: November 29, 2018
    Publication date: March 28, 2019
    Applicant: IHI Corporation
    Inventors: Yoshinori SODA, Tsuyoshi TAKEMOTO, Jun TATEISHI, Tomotake OGAWA, Misato MORI
  • SHIELD MEMBER AND JET ENGINE USING THE SAME
    Publication number: 20170284221
    Abstract: A shield member is disposed over a gap between platform portions of adjacent turbine rotor blades, made from a ceramic matrix composite, and configured to shield the gap between the platform portions.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 5, 2017
    Applicant: IHI Corporation
    Inventors: Fumiaki WATANABE, Akane OHBO, Hiroyuki YAGI, Tomotake OGAWA, Tsuyoshi TAKEMOTO