Panic exit mechanism

Details Panic exit mechanism Panic exit mechanism

1978-07-24

1979-09-11

Foss, J. Franklin

Closure fasteners

Bolts

Emergency operating means

70 92, 292 21, E05C 316

Patent

active

041672801

ABSTRACT:
A panic exit latch and actuator mechanism includes an elongated latch bolt actuator element rectilinearly movable along its axis and disposed in an elongated horizontally extending housing traversing a door. A push plate is supported for movement outwardly and inwardly relative to the housing. A pair of bell cranks provide an operative connection between the push plate and the actuator element to move the actuator element from its latch projected position to its latch retracted position in response to inward movement of the push plate. The bell cranks are mounted for pivotal movement about their apices in the housing, one crank being mounted adjacent either end of the housing. The pivotal axes of the bell cranks extend generally transversely to the direction of motion of the latch bolt actuator element. Each bell crank includes an arm pivotally connected to the latch bolt actuator element and arm pivotally connected to the push plate.

REFERENCES:
patent: 1127721 (1915-02-01), Bazille
patent: 1672901 (1928-06-01), North
patent: 3024053 (1962-03-01), Cox et al.
patent: 3432631 (1969-03-01), Deutscher et al.
patent: 3614145 (1971-10-01), Zawadzki
patent: 3663047 (1972-05-01), Zawadzki
patent: 3730574 (1973-05-01), Zawadzki
patent: 3854763 (1974-12-01), Zawadzki
patent: 4006471 (1977-02-01), Pappas
patent: 4083590 (1978-04-01), Folger

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