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:
Jun. 24, 2014
Filed:
May. 10, 2012
Shigenori Inamoto, Sagamihara, JP;
Yukihiro Takimoto, Tendo, JP;
Chikara Sekiguchi, Yamato, JP;
Mitsumi Electric Co., Ltd., Tama-shi, Tokyo, JP;
Abstract
A switch includes a click spring, stationary contacts, a spring holding sheet, a switch base, and a nub disposed on the sheet and having a non-linear acting load to displacement characteristic. Spring constant k(tangent gradient of the characteristic curve of the a nub at an origin point), spring constant k(gradient of a line connecting a point corresponding to a peak acting load and an origin point of a characteristic curve of the click spring and the sheet), spring constant k(tangent gradient at an arbitrary point of a non-linear portion of the characteristic curve of the nub), and displacement s(displacement corresponding to an intersection point of the line having the gradient kand the line having the gradient k) satisfy kk, kk, and 0<sS