Patents by Inventor Katuhiko Fujita

Katuhiko Fujita 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).

  • Steering shaft
    Patent number: 6223619
    Abstract: A steering shaft includes: an outer shaft having an inner splined portion; an inner shaft having a shaft portion and an outer splined portion which are arranged continuously along an axial direction; a retaining portion formed on at least one of the outer splined portion and the shaft portion; a sliding coupling section formed by a coupling portion of the outer shaft and a coupling portion of the inner shaft so as to allow the outer shaft and the inner shaft to be telescopically slidable in the axial direction relative to each other by means of splines; and a sliding resin member which is filled in a space formed in the sliding coupling section between an opening portion of the outer shaft and the retaining portion of the inner shaft.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: May 1, 2001
    Assignee: Kabushiki Kaisha Yamada Seisakusho
    Inventors: Kenji Shibata, Mitsuo Hoshino, Katuhiko Fujita, Hitoshi Matsumoto
  • Steering shaft
    Patent number: 6026704
    Abstract: A steering shaft includes: an outer shaft having an inner splined portion; an inner shaft having a shaft portion and an outer splined portion which are arranged continuously along an axial direction; a retaining portion formed on at least one of the outer splined portion and the shaft portion; a sliding coupling section formed by a coupling portion of the outer shaft and a coupling portion of the inner shaft so as to allow the outer shaft and the inner shaft to be telescopically slidable in the axial direction relative to each other by splines; and a sliding resin member which is filled in a space formed in the sliding coupling section between an opening portion of the outer shaft and the retaining portion of the inner shaft.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: February 22, 2000
    Assignee: Kabushiki Kaisha Yamada Seisakusho
    Inventors: Kenji Shibata, Mitsuo Hoshino, Katuhiko Fujita, Hitoshi Matsumoto