Closure fasteners – Bolts – Emergency operating means
Patent
1986-12-12
1988-05-31
Moore, Richard E.
Closure fasteners
Bolts
Emergency operating means
292 1, 292DIG66, 292300, 292340, E05C 2100
Patent
active
047476290
ABSTRACT:
An exit device primarily designed for outwardly opening doors comprises a rigid plate member having mounted thereon a latch-bolt assembly anchored to a door member and a strike assembly mounted on a door frame member in operative association with the latch-bolt assembly, wherein the plate member includes projections positioned to be on each side of the latch bolt of the latch-bolt assembly, and wherein the strike assembly includes recesses for receiving such projections. The recesses in the strike assembly are configured in relation to the projections to allow limited vertical movement of the projections within the recesses. When the device is subjected to a major force such as in a fire the projections will restrict linear growth of the frame member in the latch area by engagement of the projections, with the walls of the recesses thereby preventing excessive strain from occurring on the latch bolt which can lead to disengagement of a latch bolt from the strike. Additionally, the projections limit lateral movement of the strike and door frame member away from the latch-bolt assembly and limit inward movement of the strike and door frame member toward the latch assembly. The exit device, which can be used on single or double doors, is particularly suitable for use on a fire or emergency door.
REFERENCES:
patent: 1384506 (1921-07-01), Blackmore
patent: 1473076 (1923-11-01), Bonilla
patent: 2413732 (1947-01-01), Schlage
patent: 3316006 (1967-04-01), Russell et al.
patent: 3503234 (1970-03-01), Schultz
patent: 3514983 (1970-06-01), Krook et al.
patent: 3761119 (1973-09-01), Bennett et al.
patent: 3831988 (1974-08-01), Stelma
patent: 3877262 (1975-04-01), Williams
patent: 4083590 (1978-04-01), Folger
patent: 4178027 (1979-12-01), Charron
patent: 4189175 (1980-02-01), Paxton
patent: 4458928 (1984-07-01), Hirschbein
patent: 4547009 (1985-10-01), Allen
Deutsch Barry E.
Emhart Industries Inc.
Moore Richard E.
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