Key switch with multiple contact points

Details Key switch with multiple contact points Key switch with multiple contact points

1987-11-20

1989-09-12

Luebke, Renee S.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200533, H01H 1352

Patent

active

048662283

ABSTRACT:
A key switch is disclosed wherein a key stem is slidably movable within a switch case. Upward movement of the key stem under spring bias causes electrical disconnection between a stationary contact and a movable leaf-spring terminal type contact both mounted within the switch case. The stationary contact is a wire engaging a sheet metal type leaf-spring terminal contact having notches to provide plural contact points therebetween.

REFERENCES:
patent: 3030479 (1962-04-01), Ehrlich et al.
patent: 3626131 (1971-12-01), Stow et al.
patent: 4154997 (1979-05-01), Grebner et al.
patent: 4342892 (1982-08-01), Ayers
patent: 4439655 (1984-03-01), Borter
patent: 4673778 (1987-06-01), Lewandowski et al.

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