Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Patent
1995-02-10
1996-09-24
Picard, Leo P.
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
361288, 361322, H01G 501, H01G 516
Patent
active
055596657
ABSTRACT:
A capacitance change switch with a resiliently deformable conductive pad compressible against a dielectric coating on the surface of a pair of spaced coplanar thin foil plates formed on a refractory substrate. The pad forms with the plates a pair of capacitors electrically in series. User movement of an actuator causes pad compression and a significant electrically detectible change in capacitance for effecting a switching function. In one embodiment the pad is formed of conductive elastomer and in another embodiment the pad is formed of non-conductive elastomer with a conductive foil covering.
REFERENCES:
patent: 4423464 (1983-12-01), Tamura et al.
patent: 4472758 (1984-09-01), Goto et al.
Hubbell Ruth E.
Larsen Michael R.
Leveque Denis J.
Taranowski Michael G.
Wickert Douglas E.
Dinkins Anthony
Eaton Corporation
Johnston Roger A.
Picard Leo P.
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