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:
Apr. 16, 2002
Filed:
Dec. 22, 2000
Hiroshi Furumi, Wako, JP;
Kunio Shirakawa, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A rear wheel steering apparatus is disclosed which comprises a pair of threaded members which are threaded in a direction opposite to one another, a pair of slide members engaging with the threaded members, respectively, and movable toward and away from one another due to reverse thread action, a steering shaft for steering a pair of rear wheels, and an electric motor for rotating the threaded members to move the steering shaft coupled to one of the slide members toward one of the rear wheels for thereby steering the rear wheels. In the rear wheel steering apparatus which further comprises control means and for controlling the electric motor, and motor drive means including a bridge circuit composed of four switching elements for enabling forward or reverse rotations of the electric motor on the basis of a signal delivered from the control means, the improvement comprises a trouble compensation circuit constituted independently of the control means and for turning on the switching elements for a given time interval, during a failure taking place in the control means and so as to drive the electric motor in a direction to cause the pair of slide members to move toward each other.