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. 19, 2011
Filed:
Aug. 26, 2008
Yutaka Nagano, Tokyo, JP;
Taichiro Sato, Tokyo, JP;
Eita Hirai, Tokyo, JP;
Paramount Bed Co., Ltd., Tokyo, JP;
Abstract
In the conventional holding mechanism for supporting strut members in a state just before the stowed state is reached, reliable operation is difficult. This invention proposes a foldable side rail comprising multiple strut memberspivotally rotatably connected between an upper crosspiece memberand a lower crosspiece member, to form a parallel link mechanism, in such a manner that the side rail can be operated between a deployed state for use where the strut members are kept upright and a stowed state of disuse where the strut members are laid down, wherein a first holding mechanismis provided for holding said strut members in an upright position; and second holding mechanismsare provided on the lower crosspiece member for supporting the strut members in a state just before the abovementioned stowed state is reached, each of the second holding mechanisms consisting of a holding piece pivotally rotatable between a holding position and a non-holding position, a spring for urging the holding piece toward the holding position, a locking mechanism for locking the holding piece in the non-holding position, and an unlocking mechanism.