Patents by Inventor Yuuichi Komai

Yuuichi Komai 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).

  • Polygon mirror with embedded yoke
    Patent number: 5373391
    Abstract: A polygon mirror is made up of a rotor including a ceramic ring, a yoke and a mirror surface formation member. The yoke and the mirror surface formation member are secured to an outer periphery of the ceramic ring. A radial dynamic pressure bearing is defined by an inner periphery of the ceramic ring and an outer periphery of the fixing shaft. A thrust dynamic pressure bearing is defined by both end surfaces of the ceramic ring and surfaces of a thrust plate fixedly secured to the stator and confronting both end surfaces of the ceramic ring. The ceramic ring, the yoke and the mirror surface formation member are integrated by the material making up the mirror surface formation member during the molding of the member to form the rotor.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: December 13, 1994
    Assignee: Ebara Corporation
    Inventors: Soichi Isobe, Kimio Komata, Toshiaki Ishii, Yuuichi Komai