Pressure activated switching device

Details Pressure activated switching device Pressure activated switching device

1997-11-26

2000-09-05

Lam, Cathy F.

Electricity: circuit makers and breakers

Solid contact

Membrane type

200514, 338 99, 338113, 338114, H01H 100

Patent

active

061146455

ABSTRACT:
A pressure actuated switching apparatus includes first and second conductive layers and a plurality of discrete spaced apart dots between the first and second conductive layers. The dots serve as a standoff for separating the conductive layers and are fabricated from an insulative, elastomeric polymer foam which can collapse under the application of compressive force applied to the apparatus to allow contact between the conductive layers with minimized dead space. Alternatively, the standoff can include strips of electrically insulative elastomeric polymer foam.

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