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:
Jul. 30, 2019
Filed:
Nov. 04, 2016
Okamura Corporation, Yokohama-shi, Kanagawa, JP;
Keisuke Aono, Yokohama, JP;
Naho Ono, Yokohama, JP;
OKAMURA CORPORATION, Kanagawa, JP;
Abstract
A chair () includes an installation base (), a leg column () supported by the installation base () in a tiltable manner, a seat body () supported on an upper part of the leg column (), an elastic member () which urges the leg column () to an initial tilted posture, and a coming-off restriction member () which restricts coming-off of the leg column () from the installation base (). On a support wall () of the installation base () having an insertion hole () through which part of the coming-off restriction member () is inserted, a slide guide () coming into slidable contact with a slide guide () at a peripheral edge portion of a lower surface side of the insertion hole () is provided. The coming-off restriction member () has an upwardly protruding spherical guide surface () which is slidably brought into contact with the slide guide () below the insertion hole ().