Patents by Inventor Soichi Iwasa

Soichi Iwasa 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).

  • Rack and pinion steering device
    Patent number: 5694810
    Abstract: An annular stopper (22) made of synthetic resin is inserted into a housing (5). The housing (5) contains a rack (4) meshing with a pinion which rotates according to steering operation. A reaction force acts on the stopper (22) so that the inward movement of the stopper (22) into the housing (5) is restrained. At least part of the reaction force acts on an end face (22c) of the stopper (22) when the stopper (22) restrains the rack (4) from moving into one direction.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: December 9, 1997
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Soichi Iwasa, Yasuaki Tsuji, Toru Hashimoto, Kouji Kitahata, Hiroshi Ueno