Anti-static switch lock

Details Anti-static switch lock Anti-static switch lock

1981-07-16

1983-09-20

Shepperd, John W.

Electricity: circuit makers and breakers

High-potential type

Rotating and pivoted

200295, H01H 2706

Patent

active

044058438

ABSTRACT:
An improved anti-static switch lock of the type having a key-operated plug rotatably located within a lock barrel, A nonconductive switch adapting hub connected to the lock barrel and a switch affixed to the hub, actuable upon rotation of the plug. The improvement consisting of a hub and plug design wherein the hub is connected to the lock barrel by resilient legs which engage an annular shoulder within the barrel and the plug extends from the barrel such that it prevents the legs from disengaging the shoulder. A biasing means interconnects the hub and one of the hub legs to bias the rotation of the plug and the switch to a desired position.

REFERENCES:
patent: 1853075 (1930-04-01), Norviel
patent: 3639708 (1972-02-01), Wolniak et al.
patent: 3819883 (1974-06-01), Heap
patent: 3941954 (1976-03-01), Wintringham
patent: 4009357 (1977-02-01), Naylor

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