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. 25, 2014
Filed:
Feb. 20, 2013
Jtekt Corporation, Osaka, JP;
Atsushi Ishihara, Sakurai, JP;
JTEKT Corporation, Osaka-Shi, JP;
Abstract
A vehicle steering system includes a rotation restriction mechanism that restricts a rotation amount of a steering member within a predetermined angle. The rotation restriction mechanism includes at least one plate element that is interposed between a rotatable element, which is coaxially rotatable together with a rotary shaft of the steering member, and a non-rotatable element, and that is rotatable relative to the rotary shaft. Light projecting units are provided at one of the rotatable element and the non-rotatable element, and light receiving units are provided at the other one of the rotatable element and the non-rotatable element. The at least one plate element has light transmission portions that allows transmission of light that is emitted from the light projecting units and that enters the light receiving units when a rotation angle of the at least one plate element is a predetermined angle.