Mortise lock assembly with automatic dead bolt and incremental s

Details Mortise lock assembly with automatic dead bolt and incremental s Mortise lock assembly with automatic dead bolt and incremental s

1988-04-18

1990-01-02

Moore, Richard E.

Closure fasteners

Trippers

Sliding detent

E05C 116

Patent

active

048908703

ABSTRACT:
A mortise lock assembly disposed within a housing for mounting in a door. The assembly includes a latch bolt and a dead bolt, both of which are movably mounted within the housing and reciprocal between an extended position cut out of the housing and a retracted position within the housing. The assembly also includes latch bolt and dead bolt biasing mechanism for continuously biasing the latch bolt and dead bolt to their extended positions. The assembly further includes a trigger movably mounted within the housing and a dead bolt stop element movable between a dead bolt engaged position and a released position for restraining the dead bolt in the retracted position against the biasing force of the dead bolt biasing mechanism. The trigger moves the dead bolt stop element from the dead bolt engaged position to a dead bolt release position allowing the dead bolt to be moved automatically to the extended position by the biasing force of the dead bolt biasing mechanism when the trigger senses the strike plate on the door jamb as the door is closed.

REFERENCES:
patent: 289542 (1883-12-01), Krings
patent: 416181 (1889-12-01), O'Keefe
patent: 1808219 (1931-06-01), Hall
patent: 2519808 (1950-12-01), Young et al.
patent: 2908523 (1959-10-01), Foster
patent: 4765663 (1988-08-01), Raymond et al.

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