Closure fasteners – Trippers – Sliding bolt – swinging detent
Patent
1976-10-21
1977-12-06
Moore, Richard E.
Closure fasteners
Trippers
Sliding bolt, swinging detent
E05C 116
Patent
active
040613836
ABSTRACT:
An automatically locking crossbolt deadlock having a crossbolt yieldingly urged toward locking engagement with a cooperating strike when the deadlock and strike are mounted on a door and door frame respectively. An actuator lever releasably holds the crossbolt in a retracted or unlocking position while the door is open, and includes a portion which engages the strike, upon closing of the door, to cause the actuator lever to automatically release the crossbolt for movement into locking engagement with the strike. A cam and drive lever operate to move the crossbolt out of engagement with the strike to permit opening of the door, and a latch is engageable with the crossbolt, when the crossbolt is moved to its retracted position, to hold the same retracted until the door is opened and the actuating lever engages the crossbolt.
REFERENCES:
patent: 1162406 (1915-11-01), Segal
patent: 1330693 (1920-02-01), Fisher
patent: 2070149 (1937-02-01), Turner
patent: 2158088 (1939-05-01), Segal
patent: 2344451 (1944-03-01), Pankhurst
patent: 2597056 (1952-05-01), Beder
patent: 2639177 (1953-05-01), Smith
patent: 2660752 (1953-12-01), Carcereny
patent: 2711920 (1955-06-01), Farnsworth
patent: 2942449 (1960-06-01), White
patent: 2995394 (1961-08-01), Browning
Ideal Security Hardware Corporation
Moore Richard E.
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