Patents by Inventor Sinzi Mizutani

Sinzi Mizutani 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).

  • Rotary shaft coupling device
    Patent number: 4806809
    Abstract: A device for coupling two rotary shafts, wherein a guide member is used on the coupling end of a first shaft to guide a coupling protrusion on the coupling end of a second shaft into a V-shaped coupling recess on the first shaft. The guide member can be made of a resilient plastic, to provide a flexible and detachable coupling member and reduce abnormal wear of the rotary shaft.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: February 21, 1989
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Kazuhisa Kubota, Hisashi Hirose, Takao Sakakibara, Yasuo Miyake, Sinzi Mizutani