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. 26, 2022
Filed:
Feb. 22, 2019
Applicant:
Nhk Spring Co., Ltd., Yokohama, JP;
Inventors:
Hideaki Sakai, Yokohama, JP;
Atsushi Yoneoka, Yokohama, JP;
Assignee:
NHK SPRING CO., LTD., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 1/32 (2006.01); F16F 1/02 (2006.01);
U.S. Cl.
CPC ...
F16F 1/328 (2013.01); F16F 1/025 (2013.01); F16F 2226/048 (2013.01); F16F 2238/022 (2013.01);
Abstract
A wave spring includes an annular body in which crests and valleys are alternately and continuously formed in a circumferential direction. At least a portion of the annular body in the circumferential direction is a joined portion. The joined portion of the annular body is a flat portion extending in a plane orthogonal to a center axis of the annular body.