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:
May. 18, 2010
Filed:
Nov. 09, 2006
Nobuyuki Ueda, Osaka, JP;
Nobuyuki Ueda, Osaka, JP;
Kokuyo Furniture Co., Ltd., Osaka, JP;
Abstract
There is provided a chair that realizes a state preferably following a motion of a sitter in accordance with a posture of the relevant sitter, and a state preferably supporting the sitter. The chair includes a lower frame portion supported so as to be capable of rocking between a standing position and a rearward tilting position with respect to a base, and an upper frame portion supported so as to be capable of rocking between a normal position and a rear end position with respect to the relevant lower frame portion. Furthermore, upper frame portion biasing that elastically biases the upper frame portion from the rear end position to the normal position is provided. This upper frame portion biasing is adapted to change an elastically biasing force to the upper frame portion corresponding to a position in the rocking movement of the lower frame portion.