Patents by Inventor Eiji Ohsugi

Eiji Ohsugi 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).

  • Cage for roller bearings and method for manufacturing the same
    Patent number: 5862592
    Abstract: A cage for a roller bearing which is free of fretting and abnormal noise, which can be manufactured at low cost, and which can be easily mounted in the bearing. The cage is formed by bending a metal sheet having pockets into a ring shape, temporarily joining its ends, heat-treating the ring thus formed to remove stress, and separating the temporarily joined portion. Such a cage tends to rotate slower than the raceway members on the driving side of the bearing, making it possible to reduce fretting. Such a cage can be used under high-temperature conditions.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: January 26, 1999
    Assignee: NTN Corporation
    Inventors: Kazuyoshi Harimoto, Tsutomu Hashimoto, Eiji Ohsugi, Keiji Suzuki, Kiyoshi Kaneko, Atsushi Yamashita
  • Cage for roller bearings
    Patent number: 5528706
    Abstract: A cage for a roller bearing which is free of fretting and abnormal noise, which can be manufactured at low cost, and which can be easily mounted in the bearing. The cage is formed by bending a metal sheet having pockets into a ring shape, temporarily joining its ends, heat-treating the ring thus formed to remove stress, and separating the temporarily joined portion. Such a cage tends to rotate slower than the raceway members on the driving side of the bearing, making it possible to reduce fretting. Such a cage can be used under high-temperature conditions.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: June 18, 1996
    Assignee: NTN Corporation
    Inventors: Kazuyoshi Harimoto, Tsutomu Hashimoto, Eiji Ohsugi, Keiji Suzuki, Kiyoshi Kaneko, Atsushi Yamashita