Patents by Inventor Kiyoshi Wasawa

Kiyoshi Wasawa 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).

  • Apparatus for detection of rotational angle and number of rotations of a rotary body
    Patent number: 4053826
    Abstract: The specification discloses a first and a second rotary disk fixed together, each disk having a magnetic pole on its circumference, which disks rotate in the vicinity of a fixed magnetic head; the fixed magnetic head provides an electrical output signal each time a magnetic pole passes near it and, thus, said electrical output signal indicates a rotational angle and/or the number of rotations of said disk. Said magnetic head operates on a new principle developed from parametric excitation.
    Type: Grant
    Filed: March 30, 1976
    Date of Patent: October 11, 1977
    Assignees: TDK Electronics Co., Ltd., Nissan Motor Company
    Inventors: Kiyoshi Wasawa, Toru Kita, Takao Sugisaki, Minoru Higurashi