Patents by Inventor Tsuyoshi HASHIZUME

Tsuyoshi HASHIZUME 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).

  • Multi-layer sliding member and automobile rack-and-pinion steering apparatus using same
    Patent number: 11878741
    Abstract: A multi-layer sliding member (1) includes a backing plate (2) formed from a steel plate, a copper-plated or nickel-plated layer (4) formed on one surface (3) of the backing plate (2), a porous sintered metal layer (5) integrally bonded to the surface (3) of the backing plate (2) through the layer (4), and a coating layer (8) filling pores (6) and coating on the surface (7) of the porous sintered metal layer (5) and formed from a synthetic resin composition. The synthetic resin composition contains a PTFE as a main component and further contains, as additives, 5 to 30% by mass of a thermotropic liquid crystal polymer, 5 to 12% by mass of a polyarylketone resin, 5 to 12% by mass of a melt moldable fluororesin, and 1 to 5% by mass of a polyimide resin.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: January 23, 2024
    Assignee: Oiles Corporation
    Inventors: Takuya Maeda, Tsuyoshi Hashizume
  • MULTI-LAYER SLIDING MEMBER AND AUTOMOBILE RACK-AND-PINION STEERING APPARATUS USING SAME
    Publication number: 20210237792
    Abstract: A multi-layer sliding member (1) includes a backing plate (2) formed from a steel plate, a copper-plated or nickel-plated layer (4) formed on one surface (3) of the backing plate (2), a porous sintered metal layer (5) integrally bonded to the surface (3) of the backing plate (2) through the layer (4), and a coating layer (8) filling pores (6) and coating on the surface (7) of the porous sintered metal layer (5) and formed from a synthetic resin composition. The synthetic resin composition contains a PTFE as a main component and further contains, as additives, 5 to 30% by mass of a thermotropic liquid crystal polymer, 5 to 12% by mass of a polyarylketone resin, 5 to 12% by mass of a melt moldable fluororesin, and 1 to 5% by mass of a polyimide resin.
    Type: Application
    Filed: July 9, 2019
    Publication date: August 5, 2021
    Inventors: Takuya MAEDA, Tsuyoshi HASHIZUME