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. 24, 2012
Filed:
Aug. 27, 2009
Taiyo Otsuka, Toyota, JP;
Taiyo Otsuka, Toyota, JP;
Toyota Boshoku Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
A headrest includes a base member assembled to a seat back; a support plate assembled to the base member by a link mechanism; a lock mechanism which operates along with the link mechanism, whereupon the support plate springs out, a return prevention mechanism configured to prevent the support plate from returning to an initial position by a load imposed during the support plate springing out. The return prevention mechanism includes a ratchet including a step at an outer peripheral surface thereof, and a stopper rotatably attached to the base member to be capable of engaging with the step of the ratchet. The stopper is provided to be switchable between a first state in which the stopper is urged in a first rotating direction to engage with the step and a second state in which the stopper is urged in a second rotating direction opposite to the first rotating direction.