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. 06, 2021
Filed:
Jun. 09, 2017
Okamura Corporation, Yokohama, JP;
Hiroshi Masunaga, Yokohama, JP;
Shinpei Totsuka, Yokohama, JP;
OKAMURA CORPORATION, Yokohama, JP;
Abstract
A backrest () includes: a tensile material () on which a load support surface () configured to receive a load of a seated person is formed; a back front frame (F) that supports an outer peripheral end portion () of the tensile material (); an attachment portion () which is formed in the back front frame (F) and faces the tensile material () in a state where the attachment portion () is separated from the tensile material () in a direction intersecting the load support surface (); and a lumber support () that is attachable to and detachable from the attachment portion (), in which the lumber support () includes an attaching portion () which extends in a direction along the load support surface (), is inserted into a gap (S) between the tensile material () and the attachment portion (), and is fixed to the attachment portion ().