Improved plug-in electric switch

Details Improved plug-in electric switch Improved plug-in electric switch

1983-10-03

1985-10-08

Tolin, G. P.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

200323, H01H 920

Patent

active

045462208

ABSTRACT:
A plug-in electric switch which includes a mobile unit and a fixed unit, the fixed unit having a recess and a spring biased sliding plate, the mobile unit including a contact arm and main contacts, secondary contacts carried by both the mobile and the fixed units, a rod slidably mounted relative to and carried by the mobile unit, the rod having an end with an inclined face adapted to contact an inclined face of a slidably mounted latch, spring biasing the latch in a direction to maintain the faces in sliding contact, and another spring normally biasing the rod in a direction toward the contact or support arm such that when the main contacts are closed the mobile and fixed units are prevented from being disengaged or re-engaged and at a partially engaged position the main contacts cannot be closed.

REFERENCES:
patent: 3110778 (1963-11-01), Edmunds
patent: 3303301 (1967-02-01), Scott

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