Patents by Inventor Testuo Yamagata

Testuo Yamagata 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).

  • Constant speed running control device for automobile
    Patent number: 4838780
    Abstract: A constant speed running control device is disclosed for use on an automobile or motorcycle which permits automatic constant speed operation at a desired speed by a setting operation, and more particularly, to an improvement in a cancellation system for the automatic constant speed operation. The cancellation system being responsive to a throttle opening change in a closing direction of the engine throttle within a fixed period of time which is greater than a predetermined value or is responsive to irregular combustion in the engine during low operating speeds.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: June 13, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Testuo Yamagata, Shoji Yamashita