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, 2016
Filed:
Mar. 25, 2013
Nhk Spring Co., Ltd., Yokohama-shi, Kanagawa, JP;
Hironobu Imaizumi, Kanagawa, JP;
Norihiro Tajima, Kanagawa, JP;
NHK SPRING CO., LTD., Yokohama, JP;
Abstract
An elliptical coned disc spring can be accommodated in a rectangular installation space, can yield non-linear load characteristics, and can reduce stress differences between a bending part at a long radial part side and a bending part at a short radial part side. An elliptical coned disc spring has a body in which an outer circumference is an ellipse in a disc shape. A hole is formed at the center of the body. The hole may have various shapes such as a circle, an ellipse, etc. The body has a long radial partand a short radial part. A plate width of the long radial part is set to be greater than a plate width of the short radial part (that is, a>b).