Patents by Inventor Ikko TSUBOKURA

Ikko TSUBOKURA 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).

  • Axial-flow fluid machine and tip clearance measuring method therefor
    Patent number: 11066957
    Abstract: An axial-flow fluid machine provided with: a retainer ring holding a stationary blade train; a casing supporting the retainer ring; and an eccentric pin. An engagement part of the casing has a protruding section protruding to the retainer ring side. An engagement part of the retainer ring has a pair of wall plate sections forming a groove into which the protruding section is put. In the casing, a penetration hole is formed extending in a radial direction so as to be centered about a penetration center position that is biased to an axial upstream side in a region of the casing where the engagement part is formed. In the engagement part of the casing, a portion on an axial downstream side relative to the penetration hole exists in the entire circumferential area. The eccentric pin is inserted into the penetration hole.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: July 20, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Ikko Tsubokura, Hitoshi Morimoto, Koichi Takahashi, Kazuhiro Ikushima, Takuya Komukai, Motohiro Iwasaki
  • AXIAL-FLOW FLUID MACHINE AND TIP CLEARANCE MEASURING METHOD THEREFOR
    Publication number: 20200256214
    Abstract: An axial-flow fluid machine provided with: a retainer ring holding a stationary blade train; a casing supporting the retainer ring; and an eccentric pin. An engagement part of the casing has a protruding section protruding to the retainer ring side. An engagement part of the retainer ring has a pair of wall plate sections forming a groove into which the protruding section is put. In the casing, a penetration hole is formed extending in a radial direction so as to be centered about a penetration center position that is biased to an axial upstream side in a region of the casing where the engagement part is formed. In the engagement part of the casing, a portion on an axial downstream side relative to the penetration hole exists in the entire circumferential area. The eccentric pin is inserted into the penetration hole.
    Type: Application
    Filed: October 16, 2018
    Publication date: August 13, 2020
    Inventors: Ikko TSUBOKURA, Hitoshi MORIMOTO, Koichi TAKAHASHI, Kazuhiro IKUSHIMA, Takuya KOMUKAI, Motohiro IWASAKI