Door security guard

Details Door security guard Door security guard

1975-10-29

1977-04-26

Staab, Lawrence J.

Closure fasteners

Braces

248354P, E05C 1744

Patent

active

040197654

ABSTRACT:
A door security guard device having a main adjustable telescoping body with a finer adjusting means consisting of screw-threaded mechanism for attachment between a doorknob and the adjacent flooring. A third point hook-up between the lower floor-engaging portion and the doorjamb is also provided.

REFERENCES:
patent: 598405 (1898-02-01), Williams
patent: 942592 (1909-12-01), Schneider
patent: 1304394 (1919-05-01), Shyer
patent: 1615357 (1927-01-01), Bruhn et al.
patent: 1681834 (1928-08-01), Arends
patent: 2515364 (1950-07-01), Weaver
patent: 3430911 (1969-03-01), Olson
patent: 3583743 (1971-06-01), Newell

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