Portable security lock

Details Portable security lock Portable security lock

1975-10-16

1977-05-10

Staab, Lawrence J.

Closure fasteners

Extension link

Chain

24116R, 24135N, 292288, E05C 1736

Patent

active

040225038

ABSTRACT:
This invention pertains to a portable security lock having a sliding fastener and chain that loops around the doorknob stem and a hook that connects to the striker plate and the chain so that when the door is closed, the lock cannot be jimmied or removed unless the portable security lock is removed.

REFERENCES:
patent: 546102 (1895-09-01), Jenkins
patent: 572046 (1896-11-01), Bailey
patent: 1523287 (1925-01-01), Rawlins
patent: 2199369 (1940-04-01), Bernstein
patent: 2457195 (1948-12-01), Bagnall
patent: 3313566 (1967-04-01), Sipes
patent: 3804454 (1974-04-01), Simmons
patent: 3891257 (1975-06-01), Wilson

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