The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1989
Filed:
May. 27, 1987
Applicant:
Inventors:
Mitsuharu Morishita, Himeji, JP;
Shinichi Kohge, Himeji, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
36442405 ; 180 791 ; 180142 ; 7438 / ;
Abstract
A motor-driven power steering system for a vehicle capable of changing into a non-power assisted manual steering mode by means of a control unit when a speed sensor detects that the vehicle speed has exceeded a prescribed level. When the speed sensor has failed and/or wiring connecting the speed sensor to the control unit is broken, the control unit detects such sensor failure or wiring breaks and operates to change the steering system into a non-power assisted manual steering mode, thereby improving safety in high-speed driving of the vehicle.