Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1980-01-21
1982-02-23
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159B, 200267, 200268, 200308, H01H 1370
Patent
active
043170110
ABSTRACT:
The subject matter of this invention relates to a membrane switch having a base sheet with a plurality of conductors on one surface of the sheet. A spacer sheet is adhesively secured to the base sheet on the surface having the plurality of conductors. The spacer sheet has a plurality of apertures, which apertures are aligned with selected portions of the conductors. A flexible cover sheet is adhesively secured to the spacer sheet. The flexible cover sheet has a second plurality of flexible conductors on its surface adjacent to the spacer sheet. The flexible conductors have selected portions aligned with respective apertures. Each of the flexible conductors has a thickness no greater than 0.0025 mil. The flexible cover sheet is positionable through a selected aperture with a portion of the flexible conductor to contact electrically the respective conductor on the base sheet aligned with that aperture.
REFERENCES:
patent: 3777222 (1973-12-01), Harris
patent: 3784812 (1974-01-01), Swanberg
patent: 3811025 (1974-05-01), Bach
patent: 3862381 (1975-01-01), Glaister et al.
patent: 4007342 (1977-02-01), Makino et al.
patent: 4143253 (1979-03-01), Wagner et al.
patent: 4145584 (1979-03-01), Otterlei
patent: 4218600 (1980-08-01), Kissner
Design News; Design Ideas; "Rotary Switch Squeezes Into Minimal Envelope", R. F. Stengel, pp. 52, 53.
Chicago Decal Company
Scott James R.
Zummer Anthony S.
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