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:
Sep. 13, 1994
Filed:
Jan. 29, 1993
Applicant:
Inventors:
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180140 ; 280 91 ;
Abstract
A rear-wheel steering apparatus having a high-speed step motor revolving in accordance with a target steering angle ratio and a power cylinder for converting a change of the revolved angle of the motor to an amount of steering angle of rear wheels with a power assist by a hydraulic power. When a failure is detected in the rear-wheel steering system when the steering angle ratio is changed from in-phase to opposite phase, an oil pressure is released out of the power cylinder simultaneously with an interruption of current supply to the motor.