Patents by Inventor Etsuo Kiyohara

Etsuo Kiyohara 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).

  • Pole change dynamo-electric machines
    Patent number: 4363985
    Abstract: A pole change dynamo-electric machine with three-phase distributed winding is adapted for reconnection to form either one of two different pole numbers and for operation on either one of two different voltages. The adjacent coils of the winding are divided into N coil groups, N being equal to three times the greater one of the pole numbers. Every twelve adjacent coil groups form a set of coil groups. The beginning and end terminals of the specific coil groups within each set are connected and the rest of the terminals are reconnectable.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: December 14, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Satoshi Matsuda, Etsuo Kiyohara