Patents by Inventor Kazuhiro Ooki

Kazuhiro Ooki 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).

  • Synchronous electric machine
    Patent number: 7109624
    Abstract: A synchronous electric machine includes a stator and a rotor. The stator is provided with teeth, which are wound around to establish electromagnetic fields. The rotor is provided with permanent magnets to generate magnetic fields, so that the rotor can rotate by interaction of the magnetic fields of the windings and the permanent magnets of the magnets. At least one pair of the permanent magnets is dislocated by a predetermined angle from positions where the permanent magnets is arranged at even pitch, and the predetermined angle being set to reduce electromagnetic excitation force acting on said teeth.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: September 19, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Haruki Yashiro, Hisaaki Toujima, Kazuhiro Ooki
  • Synchronous electric machine
    Publication number: 20050200222
    Abstract: A synchronous electric machine includes a stator and a rotor. The stator is provided with teeth, which are wound around to establish electromagnetic fields. The rotor is provided with permanent magnets to generate magnetic fields, so that the rotor can rotate by interaction of the magnetic fields of the windings and the permanent magnets of the magnets. At least one pair of the permanent magnets is dislocated by a predetermined angle from positions where the permanent magnets is arranged at even pitch, and the predetermined angle being set to reduce electromagnetic excitation force acting on said teeth.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 15, 2005
    Inventors: Haruki Yashiro, Hisaaki Toujima, Kazuhiro Ooki