Patents by Inventor Tadayoshi Umeki

Tadayoshi Umeki 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: 5300366
    Abstract: Disclosed herein are a fluororesin composition for a sliding member comprising a fluororesin, at least one of fillers selected from the group consisting of glass fiber, glass powder, carbon fiber and carbon powder, and a phosphate, and a sliding member thereof.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: April 5, 1994
    Assignee: Oiles Corporation
    Inventors: Takashi Nakamaru, Tadashi Watai, Masayuki Rokugawa, Kouichi Tsunoda, Tadayoshi Umeki, Takayuki Miyaji, Kenji Yamada
  • Patent number: 5092017
    Abstract: A door hinge assembly is disclosed, which comprises a door hinge assembly for pivotally connecting a door to a fixed structure. The assembly comprises a first wing member secured to the fixed structure, the first wing member having first aligned bores formed therethrough; a second wing member secured to the door, the second wing member having second aligned bores formed therethrough, the first and second wing members being so arranged that all of the first and second aligned bores are aligned; a pivot shaft passing through the aligned first and second bores to pivotally connect the first and second wing members; plastically deformable bushes respectively disposed in the second bores while rotatably receiving therein the pivot shaft; a first structure for suppressing rotation of the pivot shaft relative to the first bores; and a second structure for suppressing rotation of the bushes relative to the second bores.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: March 3, 1992
    Assignees: Ohi Seisakusho Co., Ltd., Oiles Corporation
    Inventors: Toshiaki Hatano, Yoichi Nakamura, Masayuki Kohama, Kouichi Tsunoda, Tadayoshi Umeki, Takayuki Miyaji, Kenjiro Makishima, Shigenori Taga