Patents by Inventor Tomoyuki Yonezawa

Tomoyuki Yonezawa 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: 4999003
    Abstract: A front and rear wheel steering apparatus in a motor vehicle includes a front wheel steering mechanism and a rear wheel steering mechanism which are operatively coupled to front wheels and rear wheels rotatably supported on a vehicle frame for transmitting turning movement of a steering handlebar to the front and rear wheels. While the steering handlebar is being turned from a neutral position to a prescribed angle in one direction, the rear wheels are steered in the same direction as the front wheels, and while the steering handlebar is being turned from the prescribed angle to a maximum angle, the rear wheels are steered in the opposite direction to the front wheels. The front wheel steering angle reaches a maximum value when the steering handlebar is turned to the prescribed angle, and substantially remains at the maximum value even when the steering handlebar is further turned beyond the prescribed angle.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: March 12, 1991
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Masaru Koishi, Tomoyuki Yonezawa, Hiroshi Enomoto, Kazushiro Inoue