Safety flush bolt entrance door system

Details Safety flush bolt entrance door system Safety flush bolt entrance door system

1979-10-17

1981-08-18

Kannan, Philip C.

Movable or removable closures

With specified means to effect emergency release to closure

49366, 49395, 292 18, 292 21, E05C 1502, E05B 6510

Patent

active

042838827

ABSTRACT:
A safety flush bolt entrance door system includes a pair of doors mounted in an entrance frame for outward opening with each door pivotally supported for individual opening and closing movement. A normally active door is provided with a locking mechanism adapted to engage an opposite, normally inactive, door for securing the doors together. One or more flush bolt mechanism(s) is mounted on the normally inactive door for locking the door with the door frame whenever the locking mechanism on the active door is engaged with the inactive door. A control mechanism is mounted on the inactive door and interconnected with the flush bolt mechanism(s) so that whenever the active door is unlocked, the flush bolt mechanism(s) is releasable in response to an opening force applied against the inactive door.

REFERENCES:
patent: 1137863 (1915-05-01), Keough
patent: 2887336 (1959-05-01), Meyer
patent: 3083560 (1963-04-01), Scott
patent: 3124378 (1964-03-01), Jackson
patent: 3214947 (1965-11-01), Wikkerink
patent: 3805451 (1974-04-01), Miller

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