Door latch and ladder stabilizing apparatus

Details Door latch and ladder stabilizing apparatus Door latch and ladder stabilizing apparatus

1995-11-08

1998-01-06

Lindsey, Rodney M.

Closure fasteners

Bolts

Swinging

292259R, 292202, E05C 1918

Patent

active

057046620

ABSTRACT:
A security latch for doors and the like is disclosed including a link member one end of which is pivotably secured to the inside of the door and the other end is swingable to a position overlapping the door frame. One side of the swingable end is notched for engagement with a stop fixedly mounted to the door frame for lockable engagement with the notched portion of the link member. A locking knob is threadably mateable with the stop and after the link member is engaged with the stop, the locking knob is tightened to removably clamp the link member in locking engagement with the stop and the locking knob.

REFERENCES:
patent: 637160 (1899-11-01), Richter
patent: 2336129 (1943-12-01), Sargisson et al.
patent: 2702866 (1955-02-01), Anderson
patent: 2731238 (1956-01-01), French et al.
patent: 2896989 (1959-07-01), Ehret
patent: 3335453 (1967-08-01), Lovelace
patent: 4009754 (1977-03-01), Hoebing
patent: 4189176 (1980-02-01), Hamilton
patent: 4232890 (1980-11-01), Hoen
patent: 4290633 (1981-09-01), Sullivan

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