Claims
- 1. A push button switch having a push button switch covering member having a dome-like configuration as a whole integrally composed of a base portion, a top portion, and a riser portion connecting the base portion and the top portion in a dome-like form and made of a rubbery elastomer having a Shore D hardness of at least 35 and a rebound of at least 40%;
- said push button switch having a click ratio of at least 30% according to the formula (a-d)/a.times.100, wherein a is the pushing load at the peak and d is the pushing load at the moment of clicking,
- at a switching stroke of about 0.5 mm or less.
- 2. The push button switch covering member as claimed in claim 1 wherein the Shore D hardness of the rubbery elastomer is in the range from 35 to 60.
Priority Claims (1)
Number |
Date |
Country |
Kind |
59-262605 |
Dec 1984 |
JPX |
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CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of U.S. patent application Ser. No. 806,443, filed Dec. 9, 1985 now abandoned. The disclosure of Ser. No. 806,443 is hereby incorporated by reference.
US Referenced Citations (5)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2058462 |
Apr 1981 |
GBX |
2062965 |
May 1981 |
GBX |
2078009 |
Dec 1981 |
GBX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
806443 |
Dec 1985 |
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