Patents by Inventor Susmu Ito

Susmu Ito 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).

  • Rotational direction detection device for a motor or the like
    Patent number: 4283679
    Abstract: A rotational direction detection device is disclosed which has a single permanent magnet rotatable in response to the rotation of a rotary shaft. A magnetic field sensor is composed of a plurality of magnetic field detecting elements responsive to a rotating magnetic field produced by the rotation of the permanent magnet for generating an output representative of the rotation of the rotary shaft. The magnetic field detecting elements are arranged so that signals developed by at least two such elements differ in phase by a phase angle of other than 0 degree and 180 degrees. A rotary condition detector is responsive to the output of the magnetic field sensor for determining the rotational direction of the rotary shaft.
    Type: Grant
    Filed: April 18, 1979
    Date of Patent: August 11, 1981
    Assignee: Nippon Electric Co., Ltd.
    Inventors: Susmu Ito, Morimasa Nagao