Compact electronic device

Details Compact electronic device Compact electronic device

1987-07-06

1989-01-31

Pellinen, A. D.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200512, 341 22, H01H 312

Patent

active

048017680

ABSTRACT:
A key switch structure comprises a first insulating cover having on one surface thereof a first conductive layer and an anisotropically electrical conductive layer printed on the first conductive layer, a second insulating cover having one surface arranged at a side opposite to the anisotropically electrical conductive layer on the first cover member, and a second conductive layer sandwiched between the anisotropically electrical conductive layer and the second insulating cover. At least, one of the first and second insulating covers being flexible. A depression force is selectively introduced from the other surface side of the flexible cover through the anisotropically electrical conductive layer so as to form a conductive path between the first and second conductive layers.

REFERENCES:
patent: 4113981 (1978-09-01), Fujita et al.
patent: 4261042 (1981-04-01), Ishiwatari et al.
patent: 4338502 (1982-07-01), Hashimoto et al.
patent: 4413257 (1983-11-01), Kramer et al.
patent: 4451714 (1984-05-01), Eventoff

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