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:
Aug. 23, 1988
Filed:
Jun. 24, 1987
Applicant:
Inventors:
Assignee:
Shin-Etsu Polymer Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ; 200 / ;
Abstract
The invention provides an elastomer-made push button switch covering member having a dome-like configuration integrally composed of a base portion, a top portion and a riser portion connecting the base portion and the top portion. By virtue of the specific elastic properties of the elastomer with a Shore D hardness of at least 35 or, preferably, in the range from 35 to 60 and a rebound of at least 40%, the covering member can give the operator's finger tip a very definite and reliable feeling of clicking touch in pushing different from or superior to conventional rubber-made push button switch covering members.