Closure fasteners – Keepers – With movable dog – catch or striker
Patent
1978-07-21
1980-04-29
Staab, Lawrence J.
Closure fasteners
Keepers
With movable dog, catch or striker
292DIG66, 49 7, E05B 1502
Patent
active
RE0302635
ABSTRACT:
A catch mechanism for installation in a door frame to cooperate with a door lock on a fire door. The mechanism includes a catch member pivotable between an operative position in which to serve as a door catch and an inoperative position to enable release of the door no matter what the condition of the door lock. The mechanism includes a heat responsive locking device which locks the catch member in its catch position in the event of a fire generating high temperatures. The locking device may comprise a biased locking plunger mounted in a cavity within the catch member and normally held in a retracted position by a heat fusible metal plug but extendible on melting of the plug to engage the catch body and so lock the catch member.
REFERENCES:
patent: 1288532 (1918-12-01), Drummond
patent: 1551687 (1925-09-01), Peelle
patent: 2598067 (1952-05-01), O'Brien
patent: 2767011 (1956-10-01), Buckley
patent: 3094199 (1963-06-01), Wallmann
patent: 3116398 (1963-12-01), Welch
patent: 3325941 (1967-06-01), Prucha
patent: 3390909 (1968-07-01), Nagel
patent: 3705739 (1972-12-01), Adler
patent: 3811717 (1974-05-01), Floyd et al.
patent: 3819215 (1974-06-01), Fuss
Access Controls System Pty. Ltd.
Staab Lawrence J.
LandOfFree
Catch mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catch mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catch mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1678192