Panelboard vent assembly

Details Panelboard vent assembly Panelboard vent assembly

1979-05-07

1981-10-06

Moore, Richard E.

Closure fasteners

Bolts

Spring arm

292 91, E05C 1906

Patent

active

042931533

ABSTRACT:
A spring steel spring interlocked with a panelboard assembly door by a pull having a leg projecting through the door to engage a passage edge in the spring. When the pull is rotated to open the door the leg moves the spring to disengage a latch adjacent one end of the spring from behind a detent in a frame latch passage. The detent in the frame passage engages the latch to hold the door from rapid opening, if a circuit breaker trips to generate arc gases which exert pressure against the door, but permits separation of the door from the frame and flexure of the door to vent arc gases.

REFERENCES:
patent: 230476 (1880-07-01), Green
patent: 1235075 (1917-07-01), Stamm
patent: 3334770 (1967-08-01), Stanback
patent: 3338612 (1967-08-01), Howard
patent: 4057271 (1977-11-01), Colinet

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