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:
Mar. 22, 1994
Filed:
Sep. 04, 1991
Applicant:
Inventor:
Isamu Chikuma, Maebashi, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180 791 ; 280 91 ;
Abstract
A four-wheel steering apparatus operates such that only when the vehicle velocity is lower than a predetermined value, is the provision of the steering angle to the rear wheels electrically controlled by the steering angle sensor for the front wheels and vehicle velocity sensor while at a high-speed traveling, the provision of the steering angle to the rear wheels is performed by the compliance steering mechanism. Hence the control and stability are improved as compared with the case where the steering angle is given to the rear wheels electrically even at a high-speed traveling.