Capacitive switching device

Details Capacitive switching device Capacitive switching device

1983-04-22

1984-09-18

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

200DIG1, H01G 501

Patent

active

044727585

ABSTRACT:
A capacitive switching device having a pair of stationary electrodes, a movable electrode disposed capacitively relative to the stationary electrodes, and an actuator carrying the movable electrode and including a resilient member biasing the actuator away from the stationary electrodes. The movable electrode comprises a sponge member having non-porous layers on opposite sides thereof, and a resilient conductive layer adhering to one of the non-porous layers. The other non-porous layer is secured to the actuator such that the resilient conductive layer faces the stationary electrodes. A process of manufacturing the device is also disclosed. The process comprises producing the sponge member, securing a release paper with an adhesive to non-porous layers of the sponge member, removing the release paper from the non-porous layers with the adhesive left thereon, securing a resilient conductive layer to one of the non-porous layers with the adhesive left, and securing the sponge member to the actuator with the adhesive left on the other non-porous layer so that the conductive layer faces the stationary electrodes.

REFERENCES:
patent: 3659163 (1972-04-01), Borisov et al.
patent: 3951250 (1976-04-01), Pointon et al.
patent: 3965399 (1976-06-01), Walker et al.
patent: 4047241 (1977-09-01), Lau et al.

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