Lock deadbolt protector

Details Lock deadbolt protector Lock deadbolt protector

1989-09-25

1990-08-21

Gall, Lloyd A.

Closure fasteners

Bolts

Sliding

70107, 29216914, 292333, E05B 6320

Patent

active

049500058

ABSTRACT:
Mortise lock has a guardbolt which, when depressed, moves a lever inside the lock. The end of the lever moves a vertically sliding interlock slide from a first position in which its fits in a recess in the deadbolt and blocks the throwing of the deadbolt, to a second position. In the second position the slide clears the recess and permits the deadbolt to be extended. This protects against the extension of the deadbolt unless the door is closed.

REFERENCES:
patent: Re26677 (1969-10-01), Russell et al.
patent: 238113 (1881-02-01), Hand
patent: 950108 (1910-02-01), Lawrence
patent: 1302873 (1919-05-01), Stiff
patent: 1816134 (1931-07-01), Wood
patent: 1919763 (1933-07-01), Allen
patent: 2836051 (1958-05-01), Walters
patent: 3672714 (1972-06-01), Schultz
patent: 3769822 (1973-11-01), Yulkowski
patent: 4389061 (1983-06-01), Foshee
patent: 4890870 (1990-01-01), Miron

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