Electrical switch

Details Electrical switch Electrical switch

1981-03-05

1983-01-11

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Contact

200 5A, 200159B, 200292, 339DIG3, H01H 1370, H01H 102

Patent

active

043683690

ABSTRACT:
A pushbutton switch has a plurality of pushbuttons and corresponding switch contacts. The switch contacts are formed conductive patterns printed on an insulation plate or sheet and are in contact with a pressure conductive rubber sheet. The pressure conductive rubber sheet includes conductive powder and is rendered conductive when compressed by the pushbutton, so that the corresponding switch contacts are closed by the conductive rubber sheet. A plurality of pairs of switch contacts are connected to terminals which are arranged in an adjacent relation.

REFERENCES:
patent: 3789167 (1974-01-01), Seeger
patent: 3959610 (1976-05-01), Finnegan et al.
patent: 3983355 (1976-09-01), Hyodo
patent: 4158115 (1979-06-01), Parkinson et al.
patent: 4180711 (1979-12-01), Hirata et al.
patent: 4259551 (1981-03-01), Ohtani et al.
patent: 4308439 (1981-12-01), Itoh

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