Isolation membrane switch
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 2, 1980
Grant Date -
N/A
app pub date -
May 7, 1979
filing date -
May 7, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A membrane switch includes a substrate having a plurality of first conductors formed thereon and a flexible membrane having a plurality of second conductors formed thereon. A spacer is positioned between the substrate and membrane and there are openings in the spacer in register with aligned first and second conductors. To isolate the switch membrane, there is a pressure reduction membrane overlying and in contact with the exterior of the switch membrane and an isolation membrane positioned on top of the pressure reduction membrane. Areas of the pressure reduction membrane in register with the spacer openings are formed to reduce the required force thereupon to effect movement of the switch membrane.
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