Hermetically sealed keyboard type assembly with elastomeric elec

Details Hermetically sealed keyboard type assembly with elastomeric elec Hermetically sealed keyboard type assembly with elastomeric elec

1974-12-13

1976-05-25

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200264, 200340, H01H 1370, H01H 158

Patent

active

039596109

ABSTRACT:
A housing having key portions of a resilient pad extending therethrough with a metal impregnated elastomer pad overlying the rear surface thereof, a sheet of insulating material having openings therethrough corresponding with the key portions and a plurality of contact areas on a printed circuit board overlying the insulating sheet and having a plurality of contacts on the rear surface thereof, a connecting link formed of a second sheet of insulating material having a plurality of areas of metal impregnated elastomeric material extending therethrough and corresponding in position with the contacts, a second PC board having a plurality of contacts in contact with the elastomeric areas of the connecting link and a frame compressing all of the components together to provide an electrical contact to the elastomeric material in the connecting link and complete a circuit between various contacts on the two printed circuit boards and provide a weather-tight multi-push button switch.

REFERENCES:
patent: 3676607 (1972-07-01), Nash et al.
patent: 3676615 (1972-07-01), Wiedmer
patent: 3699294 (1972-10-01), Sudduth
patent: 3758733 (1973-09-01), DuRocher et al.
patent: 3843851 (1974-10-01), Harada et al.
patent: 3860771 (1975-01-01), Lynn et al.
patent: 3862382 (1975-01-01), Glaister et al.
patent: 3879586 (1975-04-01), DuRocher et al.

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