Patents by Inventor Yuki NORIDUKI

Yuki NORIDUKI 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
    Patent number: 11174943
    Abstract: A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 16, 2021
    Assignee: VALQUA, LTD.
    Inventors: Takahiro Yamamoto, Chao Jing, Mitsuru Minami, Akira Ueda, Yuki Noriduki
  • SEAL STRUCTURE
    Publication number: 20210102627
    Abstract: A seal member is disposed in a seal groove at a sliding gap between a shaft and a case. The seal member includes an outer periphery, a curved inner periphery, a mounting face, and an upper face. The mounting face is recessed toward the upper face. The upper face is recessed toward the mounting face. The relation of 0.755?h/H?0.
    Type: Application
    Filed: May 11, 2017
    Publication date: April 8, 2021
    Inventors: Takahiro YAMAMOTO, Chao JING, Mitsuru MINAMI, Akira UEDA, Yuki NORIDUKI
  • SEAL STRUCTURE
    Publication number: 20200063870
    Abstract: A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is.
    Type: Application
    Filed: May 11, 2017
    Publication date: February 27, 2020
    Inventors: Takahiro YAMAMOTO, Chao JING, Mitsuru MINAMI, Akira UEDA, Yuki NORIDUKI