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:
Mar. 11, 2025
Filed:
Sep. 14, 2022
Kokuyo Co., Ltd., Osaka, JP;
Katsuaki Hayashi, Osaka, JP;
KOKUYO CO., LTD., Osaka, JP;
Abstract
The chair can attain smooth movement of a seat by using a rolling surface. The chair includes an upper base unit () and a lower base unit () facing each other, and a seat () that is provided in the upper base unit () and swings when the upper base unit () rolls with respect to the lower base unit (), and the upper base unit (), which is at least one of the upper base unit () and the lower base unit (), includes a rolling surface () being curved. In the chair, a region having a different curvature exists in a part of the rolling surface (), and an elastic member () is interposed between the region having the different curvature and a corresponding region of an opposing surface.