Patents by Inventor Hiroyuki Mizuma

Hiroyuki Mizuma 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).

  • Pedal depression assisting mechanism
    Patent number: 5044223
    Abstract: A pedal depression assisting mechanism is provided with first and second assist spring units. The first assist spring unit applies to a pedal arm a depression resisting force upon rotation of the pedal arm between a rest position and a transition position and a depression assisting force upon rotation of the pedal arm exceeding the transition position. The second assist spring unit applies to the pedal arm a depressing assisting force upon rotation of the pedal arm between the rest position and the transition position. The second assist spring unit becomes ineffective on the pedal arm when the pedal arm is in the transition position or rotated beyond the transition position.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: September 3, 1991
    Assignees: Nissan Motor Co., Ltd., Fuji Kiko Co., Ltd.
    Inventors: Hiroyuki Mizuma, Yasushi Asano, Yoshimasa Kataumi