Patents by Inventor Yoshihito Hiraiwa

Yoshihito Hiraiwa 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).

  • Shift lever bush
    Patent number: 6783297
    Abstract: A projecting portion 52 which becomes convex in radial direction is formed in a rubber elastic body 5 for connecting together an inner cylindrical body 3 mounted to a shaft portion 21a of a lower shift lever member 21 by external interfit and an outer cylindrical body 4 mounted to a cylindrical portion 22a of an upper shift lever member 22 by internal interfit. Formed in an inner peripheral surface of the outer cylindrical body 4 is a recessed portion 42 which becomes concave with clearances C1 and C2 of respective given amounts left between the recessed portion 42 and the projecting portion 52. This makes it possible to manufacture a shift lever bush 1 having a two-stage spring characteristic at low cost.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: August 31, 2004
    Assignees: Kurashiki Kako Co., Ltd., Mannoh Kogyo Co., Ltd.
    Inventors: Osamu Hashimoto, Yoshihito Hiraiwa, Kenji Nishikawa
  • Shift lever bush
    Publication number: 20020124675
    Abstract: A projecting portion 52 which becomes convex in radial direction is formed in a rubber elastic body 5 for connecting together an inner cylindrical body 3 mounted to a shaft portion 21a of a lower shift lever member 21 by external interfit and an outer cylindrical body 4 mounted to a cylindrical portion 22a of an upper shift lever member 22 by internal interfit. Formed in an inner peripheral surface of the outer cylindrical body 4 is a recessed portion 42 which becomes concave with clearances C1 and C2 of respective given amounts left between the recessed portion 42 and the projecting portion 52. This makes it possible to manufacture a shift lever bush 1 having a two-stage spring characteristic at low cost.
    Type: Application
    Filed: January 23, 2002
    Publication date: September 12, 2002
    Inventors: Osamu Hashimoto, Yoshihito Hiraiwa, Kenji Nishikawa