Patents by Inventor Katsuhiro Tokumaru

Katsuhiro Tokumaru 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 steering apparatus for vehicle
    Patent number: 4949984
    Abstract: A rear-wheel steering apparatus for a vehicle includes an output shaft for coupling rear right and left wheels through one shaft, a cam member which is rotatable about an axis extending in a direction perpendicular to the output shaft, a pair of roller members which are provided to the output shaft and are in rolling contact with opposing portions of the outer peripheral surface of the cam member, and an input shaft for rotating the cam member in accordance with a turning amount of front wheels.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: August 21, 1990
    Assignee: Mazda Motor Corporation
    Inventors: Hiroki Uemura, Katsuhiro Tokumaru, Ayumu Doi