Patents by Inventor Ishikawa Yoshimi

Ishikawa Yoshimi 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).

  • Rear wheel holding mechanism for a motorcycle
    Patent number: 4889205
    Abstract: The rear wheel holding mechanism of a motorcycle has a driving axle of double-shaft construction comprising an outer shaft having a comparatively large outside diameter and an inner shaft of comparatively small diameter wherein power is transmitted efficiently to the rear wheel through the large diameter outer shaft and the rear wheel is fastened to the driving axle by a screwed connection on the small diameter inner shaft whereby only a comparatively small torque is required. Thus, the efficiency of the motorcycle rear wheel mounting work is significantly improved.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: December 26, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Ishikawa Yoshimi