Security device for dual doors

Details Security device for dual doors Security device for dual doors

1993-07-15

1994-03-15

Moore, Richard E.

Closure fasteners

Clamps

Portable

292288, 70DIG65, E05C 1918

Patent

active

052941604

ABSTRACT:
A security device for securing first and second adjacent doors having first and second door knobs, respectively. Each door knob has a neck portion and a head portion. The security device comprises: (a) a rigid plate disposed substantially between two parallel planes; (b) first and second openings spaced apart from one another in a bottom wall of the plate; (c) first and second holes in first and second side walls of the plate, the holes extending through the plate into the openings; and (d) first and second locking pins slidably disposed within the first and second holes. The first and second locking pins extend below the respective neck portions of the door knobs when the locking pins are in their locking positions. The locking pins have protruding portions extending out of the side walls of the plate for gripping by a user of the security device. A ball can be provided near an inner end of each locking pin. The ball has a diameter larger than the diameter of the respective hole in which the respective locking pin slides to prevent the locking pin from being removed from the plate. A notch can also be provided in inside walls of the openings. The balls rest in the notches when the locking pins are in their locking positions.

REFERENCES:
patent: 694975 (1902-03-01), Marshall
patent: 2151587 (1939-03-01), Cassileth
patent: 2331150 (1943-10-01), Whiting, Jr.
patent: 2532586 (1950-12-01), Wickwire
patent: 2663585 (1953-12-01), Tye
patent: 2789849 (1957-04-01), Hughes
patent: 2899229 (1959-08-01), Jenks
patent: 3059952 (1962-10-01), Witman et al.
patent: 3383130 (1968-05-01), De Avila
patent: 4082334 (1978-04-01), Volta et al.
patent: 4955648 (1990-09-01), Miller
patent: 5143413 (1992-09-01), Vandenhoek

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