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. 29, 2008
Filed:
Dec. 29, 2006
Sang DO Park, Ansan-si, KR;
Kwang Bin Im, Anyang-si, KR;
Sang Do Park, Ansan-si, KR;
Kwang Bin Im, Anyang-si, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
An active headrest includes a panel inside a seat frame, a panel link supporting the panel and rotating in response to raising of the panel, and a frame which is raised by the panel. A self locking device of the active headrest includes: a guide cylinder in the seat back frame, defining a receiving indentation therein; a return spring in the receiving indentation; and a locking piston in the receiving indentation, a first end of the locking piston being coupled to the return spring, and a second end of the locking piston being exposed to outside the guide cylinder, wherein the locking piston is kept in the guide cylinder by the panel link at the non-operated position of the active headrest, and pressed outside of the guide cylinder by the return spring to restrain rotation of the panel link at the operated position of the active headrest.