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:
Jan. 24, 2012
Filed:
Sep. 22, 2010
Chia-chun Chu, Tainan, TW;
Deng-maw LU, Tainan, TW;
Chau-chin Chang, Tainan, TW;
Southern Taiwan University, Yung-Kang, Tainan, TW;
Abstract
In a central transmission device of a four-wheel steering system, a turning output unit includes an output shaft extending rotatably through a rear wall of a housing for connection with a rear wheel turning mechanism, and a rotary disc coaxial and integral with a front end of the output shaft. The rotary disc has a radially extending slide groove. A turning input unit includes an input shaft extending rotatably through a front wall of the housing for connection with a front wheel turning mechanism, and a cam protrusion disposed eccentrically at a rear end of the input shaft. The cam protrusion extends into the slide groove and drives the rotary disc. The rotary disc turns reciprocally within a limited angle when the cam protrusion rotates one revolution.