Patents by Inventor Akira Tokusima

Akira Tokusima 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).

  • Piezoelectric motor
    Patent number: 4562373
    Abstract: A piezoelectric motor wherein a stator comprising piezoelectric vibrators of rectangular or circular plate form pasted with a metal is used as a power source and a mechanical vibration in two directions, longitudinal and widthwise directions or radial and tangential directions, is converted into a rotary or linear motion through frictional force.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: December 31, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Tokusima, Ritsuo Inaba