Keyboard of membrane switches with tactile feedback

Details Keyboard of membrane switches with tactile feedback Keyboard of membrane switches with tactile feedback

1979-10-15

1981-04-21

Truhe, J. V.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200292, 200302, H01H 312, H01H 904, H01H 1306

Patent

active

042634857

ABSTRACT:
A keyboard type switch is disclosed wherein a domed snap disc performs triatic functions of acting as a tactile feedback source for switch operation, of supplying a conductive path for electrical energy when depressed, and of providing a contact surface for manual operation. The disclosed switch is covered by a multilayered nonconductive membrane and spacer to provide maximum safety from electrical shock to the operator.

REFERENCES:
patent: 3591749 (1971-07-01), Comstock
patent: 3808384 (1974-04-01), Boulanger
patent: 4086451 (1978-04-01), Boulanger

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