Patents by Inventor Kazuya Shigemori

Kazuya Shigemori 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).

  • Brushless motor and a control circuit thereof
    Patent number: 5604412
    Abstract: A brushless motor includes a stationary member; a rotating member rotatably supported with respect to the stationary member; a stator provided in the stationary member and provided with a stator coil for generating current magnetic field under an exciting state; and a rotor magnet provided in the rotating member for obtaining a revolutionary power due to an electromagnetic mutual effect with the current magnet field of the stator coil. The rotor magnet is formed such that segment-shaped magnets are placed annularly with predetermined gaps circumferentially. The gaps are filled with a magnetic resin material.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: February 18, 1997
    Assignee: Nidec Corporation
    Inventors: Tadashi Okada, Akira Inui, Kazuya Shigemori