Dead bolt and night chain combination

Details Dead bolt and night chain combination Dead bolt and night chain combination

1983-03-25

1985-01-15

Moore, Richard E.

Closure fasteners

Extension link

E05C 1736

Patent

active

044935005

ABSTRACT:
The sliding deadbolt of a security door lock internally mounts a latching device engageable with the coupling element on the end of a flexible guard element retracted within a jamb-mounted, strike housing into which the deadbolt is projected for door locking purposes. Retraction of the deadbolt permits opening of the door to a limited extent by extension of the guard element from the strike housing in the jamb. Continued retraction of the deadbolt effects release of the latch device and retraction of the guard element.

REFERENCES:
patent: 1988049 (1935-01-01), Reiner
patent: 4087121 (1978-05-01), Davis

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