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:
Aug. 04, 2015
Filed:
Nov. 02, 2012
Okamura Corporation, Kanagawa, JP;
Youichirou Oda, Yokohama, JP;
Okamura Corporation, Yokohama-shi, Kanagawa, JP;
Abstract
A chair in which a biasing force acting on a back can be changed even if the stroke of a moving member is small, thereby enabling the device to be compact, and the biasing force can be steplessly adjusted with light force. A biasing force transmission member () reverses the biasing force of a biasing mechanism acting on a tip portion of the biasing force transmission member () which is a point of effort (Q) with a point abutting a fulcrum member () working as a fulcrum (P) for a lever, transmits the biasing force to a base end of the biasing force transmission member () which is a point load (R) to bias the back in an upright direction, and moves the fulcrum member () along a side edge of the biasing force transmission member () on a pressure receiving side to be able to adjust the biasing force.