Flush bolt mechanisms

Details Flush bolt mechanisms Flush bolt mechanisms

1975-12-18

1977-02-01

Britts, Ramon S.

Closure fasteners

Bolts

Sliding

292 21, 292 34, 292 35, 292 92, 292DIG21, 292DIG44, 292DIG66, E05C 706

Patent

active

040058867

ABSTRACT:
A flush bolt mechanism is disclosed for latching the inactive one of a pair of swinging doors, the mechanism functioning to latch the closed inactive door in response to closing of the other door. The latch mechanism includes a bolt that is driven home by cam and spring assemblies. A heat-responsive mechanism is provided for retaining the bolt in its extended position when the heat-responsive mechanism is subjected to a temperature and for a time sufficient to melt one of its components. A release mechanism may be provided for retracting the extended bolt in response to a force of preselected magnitude applied against the inside of the inactive door.

REFERENCES:
patent: 412986 (1889-10-01), Schoen et al.
patent: 1559160 (1925-10-01), Carter
patent: 1983125 (1934-12-01), Ellison
patent: 2202916 (1940-06-01), Mussa
patent: 2281317 (1942-04-01), McFarlane
patent: 2910857 (1959-11-01), Muessel
patent: 3578369 (1971-05-01), Coopersmith
patent: 3582122 (1971-06-01), Foster et al.
patent: 3705739 (1972-12-01), Adler
patent: 3811717 (1974-05-01), Floyd et al.

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