Emergency release for deadlocks

Details Emergency release for deadlocks Emergency release for deadlocks

1979-11-13

1981-06-09

Wolfe, Robert L.

Locks

Operating mechanism

Key

292254, 70DIG49, E05B 6300, E05C 1300

Patent

active

042716918

ABSTRACT:
An emergency release for key operated deadlocks includes a ram rod for forcing a deadbolt out of a keeper so as to allow a deadlocked door to open under emergency conditions. The release further includes a yieldable element disposed between the key operator for the deadbolt, which yieldable element deforms as the deadbolt is forced back by the ram. An alarm is activated upon operation of the emergency release to discourage intruders from trying to open the door with the emergency release. Preferably, the rod is advanced by a rack-and-pinion arrangement which is operated by a wire coiled around a spool.

REFERENCES:
patent: 528108 (1894-10-01), Paul
patent: 1888967 (1932-11-01), Constable
patent: 2931207 (1960-04-01), Fisher

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