Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1983-12-23
1985-09-03
Kucia, R. R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
361401, 361406, 361416, H01H 1370
Patent
active
045394458
ABSTRACT:
There is disclosed a click disc switch assembly comprising a plate-like base having on it electroconductive ink paths including (a) "row" paths each including a respective row of contact pads in a row-and-column matrix of such pads on the base, and (b) "column" paths corresponding to the columns of the matrix and including respective junction pads. Overlying the columns of the matrix are click disc strips secured to the rest of the assembly solely by being adhered to an overlying sheet sealing the top of the assembly. Interposed between the strips and the "row" paths is an insulating layer deposited on the base to cover portions of the row paths while leaving uncovered their junction pads. Each click disc is electrically coupled to the corresponding "column" path on the base by the coming into contact of the disc when depressed to branch segments of a further electroconductive ink path (one for each click disc strip) deposited on the insulate layer and attached through an aperture therein to the junction pad of that "column" path. Variations in the thickness of the paths on the base and on the layer are cancelled out by depositing on the base, below the click discs, pairs of bars of the same thickness as the lead portions of the paths on the base, and by raising the contact pads by an amount equal to the thickness of the paths on the layer. The base is a laminar member comprising an overlying flexible plastic sheet adhered to an underlying stiffening board. The assembly may include a tail for connecting it to other circuitry.
REFERENCES:
patent: 4046981 (1977-09-01), Johnson et al.
patent: 4083100 (1978-04-01), Flint et al.
patent: 4128744 (1978-12-01), Seeger
patent: 4461934 (1984-07-01), Jabben
AT&T - Technologies, Inc.
Grimley Arthur
Kip, Jr. R. F.
Kucia R. R.
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