Patents by Inventor Masahide IZUMI

Masahide IZUMI 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).

  • Rolling bearing and rotating device including rolling bearing
    Patent number: 10520015
    Abstract: A rolling bearing includes: an inner ring; an outer ring; and a plurality of rolling elements provided between the inner ring and the outer ring, wherein: one of the inner ring and the outer ring is a rotating ring; the other one of the inner ring and the outer ring is a firm ring; the firm ring is attached to a prescribed member; and a black oxide film having a mesh-shaped crack is formed on at least one surface of a fitting surface of the firm ring and a side face of the firm ring, the fitting surface facing the prescribed member in a radial direction of the rolling bearing, the side face making contact with the prescribed member in an axial direction of the rolling bearing.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: December 31, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Daisuke Yamashita, Yasuhiko Ishii, Takahiro Koyanagi, Masahide Izumi, Masayoshi Kouno
  • ROLLING BEARING AND ROTATING DEVICE INCLUDING ROLLING BEARING
    Publication number: 20190195275
    Abstract: A rolling bearing includes: an inner ring; an outer ring; and a plurality of rolling elements provided between the inner ring and the outer ring, wherein: one of the inner ring and the outer ring is a rotating ring; the other one of the inner ring and the outer ring is a firm ring; the firm ring is attached to a prescribed member; and a black oxide film having a mesh-shaped crack is formed on at least one surface of a fitting surface of the firm ring and a side face of the firm ring, the fitting surface facing the prescribed member in a radial direction of the rolling bearing, the side face making contact with the prescribed member in an axial direction of the rolling bearing.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 27, 2019
    Applicant: JTEKT CORPORATION
    Inventors: Daisuke YAMASHITA, Yasuhiko ISHII, Takahiro KOYANAGI, Masahide IZUMI, Masayoshi KOUNO