Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent
1999-12-30
2000-12-05
Gellner, Michael L.
Electricity: circuit makers and breakers
Electric switch details
Actuators
200344, H01H 1370
Patent
active
061569860
ABSTRACT:
A computer key switch, which includes a hollow key switch base supported on a membrane circuit above a frame, a rubber cone mounted on the membrane circuit inside the key switch base, and a key cap supported on the rubber cone for depressing with the finger to compress the rubber cone in triggering the membrane circuit, wherein the key cap has a plunger of H-shaped cross section supported on the rubber cone, and two hook rods symmetrically longitudinally suspended in open spaces defined in the plunger at two opposite sides, the plunger has longitudinally extended guide ribs formed integral with the periphery thereof and disposed in contact with the inside wall of the key switch base to guide vertical movement of the key cap relative to the key switch base; the key switch base has two hooks bilaterally disposed on the inside at the top for stopping hooks at the hook rods to limit up stroke of the key cap.
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patent: 5283408 (1994-02-01), Chen
patent: 5399824 (1995-03-01), Chen
patent: 5938009 (1999-08-01), Huang
patent: 5973281 (1999-10-01), Tsai
patent: 5990435 (1999-11-01), Chao
Gellner Michael L.
Jing Mold Enterprise Co., Ltd.
Nguyen Nhung
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