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:
Jul. 13, 1993
Filed:
Jan. 10, 1992
Hirotaka Kanazawa, Hiroshima, JP;
Hiroshi Ohmura, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A four-wheel steering system includes a front wheel turning mechanism which turns the front wheels in response to the turning of the steering wheel, a rear wheel turning mechanism which turns the rear wheels in response to the turning of the steering wheel, and a power steering mechanism. The rear wheel turning mechanism changes the rear wheel turning angle ratio, which is the ratio of the rear wheel turning angle to the front wheel turning angle on the basis of predetermined rear wheel turning angle ratio characteristic curve. A selecting switch selects one of a plurality of rear wheel turning angle ratio characteristic curves according to the running condition of the vehicle and causes the rear wheel turning mechanism to change the rear wheel turning angle ratio on the basis of the rear wheel turning angle ratio characteristic curve selected. The assisting force of the power steering mechanism is changed according to the rear wheel turning angle ratio characteristic curve selected by the selecting switch.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile