Patents by Inventor Katsutoshi Chiba

Katsutoshi Chiba 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).

  • Hydrodynamic bearing assembly
    Patent number: 5710470
    Abstract: A hydrodynamic bearing assembly includes a support shaft provided on a stationary member, a rotating member rotatably supported on the support shaft through a hydrodynamic radial bearing and a hydrodynamic thrust bearing, a magnet provided at a stationary side, and a magnetic member provided on the rotating member opposite the magnet. The magnetic member is attracted by the magnetic force from the magnet so that a force acting on the thrust hydrodynamic bearing is cancelled or reduced.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 20, 1998
    Assignee: Ebara Corporation
    Inventors: Kimio Komata, Toshihiro Otani, Yasushi Hisabe, Katsutoshi Chiba, Akihiro Machida
  • Electrically powered apparatus
    Patent number: 4820949
    Abstract: An electrically powered apparatus is disclosed in which an axial end surface of a rotor and an axis end surface of a stator are arranged to be sliding surfaces for effecting relative sliding motion therebetween, one of the sliding surfaces being provided with grooves adapted to generate fluid dynamic pressure upon relative rotation of said surfaces.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: April 11, 1989
    Assignee: Ebara Research Co., Ltd.
    Inventors: Shotaro Mizobuchi, Toshiya Kanamori, Katsumi Sasaki, Katsutoshi Chiba, Yoshikazu Kimura