Push button switch
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United States of America Patent
Stats
-
May 29, 1990
Grant Date -
N/A
app pub date -
Dec 1, 1988
filing date -
Dec 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A push button switch which may be used, for example, as a zooming switch in a video camera, having a uniform electrical resistance/applied pressure characteristic and which can be manufactured easily and at a low cost. The switch includes a conductive layer and a pressure-sensitive resistance element disposed between electrode patterns provided on a printed circuit board and an insulated push button. The conductive layer is coated with a pressure-sensitive conductive paste and the pressure-sensitive resistance element is fixed to the insulated push button at a opposed surface to the electrode patterns separated by a predetermined distance.
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