Capacitive switch with elastomeric membrane actuator

Details Capacitive switch with elastomeric membrane actuator Capacitive switch with elastomeric membrane actuator

1997-06-27

1999-07-13

Kincaid, Kristine

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361291, H01G 501

Patent

active

059235225

ABSTRACT:
A capacitive switch assembly includes an elastomeric sheet actuator for elastically supporting a switching member above a capacitive element comprised of a pair of conductive plates and a dielectric sheet. The elastomeric sheet supports the switching member so that upon user actuation to compress the elastomeric sheet, the switching member is directed to engage the capacitive element and selectively compress to effectively form a variable capacitor. Resilient deformation of the switching member can further vary the capacitance of the capacitor in an electrically detectable manner.

REFERENCES:
patent: 4423464 (1983-12-01), Tamura et al.
patent: 4472758 (1984-09-01), Goto et al.
patent: 5559665 (1996-09-01), Taranowski et al.

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