Latch means for switch enclosure

Details Latch means for switch enclosure Latch means for switch enclosure

1976-12-09

1978-08-01

Scott, James R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

H01H 920

Patent

active

041044916

ABSTRACT:
An electric switch mounted within an enclosure having a hinged cover is manually operated from outside the enclosure by a handle mechanism secured to the enclosure. The cover is provided with a single aperture near the edge thereof remote from the cover hinges, with this aperture providing clearance for the operating handle and housing of the mechanism when the cover is closed and also providing clearance for a catch which holds the cover closed. A defeatable cover interlock prevents opening of the cover when the switch is closed, and a defeatable switch interlock prevents closing of the switch when the cover is open. The cover interlock includes a catch and means biasing the catch to cover holding position. When the cover is open, holding means operate and maintain the catch in cover releasing position to permit slamming of the cover without damaging the catch. Rotatable tool operated means on the handle mechanism also locks the cover closed.

REFERENCES:
patent: 3609261 (1971-09-01), Rys
patent: 3629536 (1971-12-01), Rys
patent: 3678230 (1972-07-01), Rys
patent: 3777084 (1973-12-01), Rys

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