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:
Nov. 25, 1986
Filed:
Oct. 12, 1984
Yasuhiro Shiraishi, Zama, JP;
Makoto Miyoshi, Kawasaki, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An actuator (7) for varying the degree of power assistance is connected with a main battery (8) through a first fuse (12) separate from a second fuse (13) which protects a controller (1) such as a microcomputer for controlling the steering effort in accordance with the vehicle speed and other variables. An emergency control means (14-18) is connected with the actuator for preventing the steering from becoming abnormally heavy or light when the controller is isolated from the main battery. The emergency control means keeps the steering moderate by using a backup battery or by limiting a current supplied to the actuator to a predetermined value.