Patents by Inventor Hiroshi Okutsu

Hiroshi Okutsu 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).

  • Method of manufacturing rotor of electric motor
    Patent number: 7120986
    Abstract: In a method of manufacturing a rotor of an electric motor to be arranged inside a stator, a permanent magnet is formed in a ring-shape, and a rotating shaft and the permanent magnet are concentrically arranged in a mold. Then, a rubber material in a fluid state is poured into a space between the permanent magnet and the rotating shaft to vulcanize and mold a cushioning member having predetermined hardness. The permanent magnet and the rotating shaft are integrally coupled through the cushioning member.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: October 17, 2006
    Assignee: Fujitsu General Limited
    Inventors: Tomonori Kojima, Toshiaki Tanno, Ken Maeyama, Hiroshi Okutsu
  • Method of manufacturing rotor of electric motor
    Publication number: 20040045154
    Abstract: In a method of manufacturing a rotor of an electric motor to be arranged inside a stator, a permanent magnet is formed in a ring-shape, and a rotating shaft and the permanent magnet are concentrically arranged in a mold. Then, a rubber material in a fluid state is poured into a space between the permanent magnet and the rotating shaft to vulcanize and mold a cushioning member having predetermined hardness. The permanent magnet and the rotating shaft are integrally coupled through the cushioning member.
    Type: Application
    Filed: July 3, 2003
    Publication date: March 11, 2004
    Inventors: Tomonori Kojima, Toshiaki Tanno, Ken Maeyama, Hiroshi Okutsu
  • Rotor of electric motor and method for manufacturing the same
    Publication number: 20010048261
    Abstract: Between a permanent magnet formed in a ring shape and a rotating shaft arranged at the center of the permanent magnet, a cushioning member made of rubber material is vulcanized and molded, and the permanent magnet and the rotating shaft are integrally coupled through the cushioning member, whereby vibration isolation, eccentricity and the like of a rotor are realized with a small number of components to manufacture an electric motor at low cost.
    Type: Application
    Filed: May 1, 2001
    Publication date: December 6, 2001
    Applicant: FUJITSU GENERAL LIMITED
    Inventors: Tomonori Kojima, Toshiaki Tanno, Ken Maeyama, Hiroshi Okutsu