Push button switch assembly including single or plural sequentia

Details Push button switch assembly including single or plural sequentia Push button switch assembly including single or plural sequentia

1993-03-12

1994-05-17

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 1B, 200513, H01H 1370, H01H 106

Patent

active

053130278

ABSTRACT:
A push switch is capable of performing a first switching operation and subsequently a second switching operation when a pressing force is applied to the switch. The push switch includes (a) an insulating membrane having at least one dome with at least a portion thereof overlaid by or serving as an inner conductor and at least a portion of its outer periphery overlaid by or serving as an outer conductor, (b) an insulating substrate having thereupon an inner pole contact disposed at a position opposing to the inner conductor and an outer pole contact disposed at a position opposing to the outer conductor, respectively, and (c) a spacer placed between the insulating membrane and the insulating substrate for spacing the conductor apart from the pole contacts during the time when no pressing force is applied to the switch. When a light pressing force is applied to the dome, the outer conductor will first come in contact with the outer pole contact causing a first switching operation to take place, and subsequently with a further pressing, the inner conductor will come in contact with the inner contact causing a second switching operation to take place.

REFERENCES:
patent: 3973091 (1976-08-01), Kaminski
patent: 3996429 (1976-12-01), Chu et al.
patent: 4314117 (1982-02-01), Ditzig
patent: 4319099 (1982-03-01), Asher
patent: 4400596 (1983-08-01), Fukukura et al.
patent: 4477700 (1984-10-01), Balash et al.
patent: 4892981 (1990-01-01), Soloway et al.
patent: 4987275 (1991-01-01), Miller et al.

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