Patents by Inventor Yasuo Ohaku

Yasuo Ohaku 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).

  • Patent number: 5270599
    Abstract: A miniature motor including a case made of a metallic material and formed into a bottomed hollow cylindrical shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, a rotor comprising an armature and a commutator, a case cap fitted to an open end of the case and having brushes making sliding contact with the commutator, and terminals electrically connected to the brushes; the rotor being rotatably supported by bearings provided on the bottom of the case and the case cap; in which the input terminals are mounted on the case cap made of a resin material and fixedly fitted to the case cap by means of lanced and raised retainer pieces formed on the input terminals near the outer end face of the case cap is disclosed. Also disclosed is a method of making miniature motors comprising a process of press-fitting input terminals into a case cap, and a process of forming lanced and raised retainer pieces in the vicinity of the outer end face of the case cap.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: December 14, 1993
    Assignee: Mabuchi Motor Co., Ltd.
    Inventors: Norio Aoyagi, Yasuo Ohaku, Kouichi Koide