Electricity: circuit makers and breakers – Solid contact – Push button operated
Patent
1993-10-27
1995-03-21
Luebke, Renee S.
Electricity: circuit makers and breakers
Solid contact
Push button operated
200345, H01H 1314
Patent
active
053998243
ABSTRACT:
A computer key switch consisting of a key cap, a key body, a rubber cone, and a printed circuit board, wherein the key cap has two bottom rods movably inserted into two pin holes on the key body and two corresponding pin holes in the circuit board, two bottom hooks movably hooked in two retaining holes on the key cap and passable through two corresponding through holes in the circuit board, and a bottom plunger disposed in line with the center through hole on the key body and forced to squeeze the rubber cone; the key body has two downward hooks on two opposite sides thereof respectively hooked in two retaining holes on the printed circuit board; the rubber cone is received within the key body, having an annular top flange extended out of the center through hole on the key body and stopped against the bottom plunger of the key cap, and a conductive rubber on the inside to electrically connect a circuit on the printed circuit board upon each down stroke of the bottom plunger.
REFERENCES:
patent: 4453061 (1984-06-01), Tamura
patent: 4467150 (1984-08-01), Leitermann et al.
patent: 4492838 (1985-01-01), Fukukura
patent: 4641004 (1987-02-01), Keprda
patent: 5172990 (1992-12-01), Weng
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