Latch for escape door

Details Latch for escape door Latch for escape door

1978-04-24

1980-05-13

Foss, J. Franklin

Closure fasteners

Bolts

Swinging

292 48, 296187, E05C 700

Patent

active

042025729

ABSTRACT:
A latch particularly adapted to releasably secure an escape door has a rotating catch pivotally connected to a toggle joint link mechanism having an actuating arm and a stop means associated therewith. When the catch is in closed position, the link mechanism is located on the stop means side of its longitudinal axis and force in an opening direction on the catch is resisted by the stop means. The catch is released by pushing the actuating arm to thereby shift the link mechanism to the other side of its longitudinal axis where the link mechanism has sufficient movement to allow the catch to rotatably release.

REFERENCES:
patent: 1339492 (1920-05-01), Belden
patent: 2144737 (1939-01-01), McCabe
patent: 2190080 (1940-02-01), Ott
patent: 2893772 (1959-07-01), Edwards
patent: 3113352 (1963-12-01), Gibbs et al.
patent: 3992052 (1976-11-01), Green

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