Door blocking device

Details Door blocking device Door blocking device

1993-05-06

1995-09-12

Kannan, Philip C.

Closure fasteners

Clamps

Portable

292339, 292DIG15, B65D 4530

Patent

active

054492092

ABSTRACT:
A portable and separable door blocking device functioning as a positive locking unit for a door to prevent its opening from the outside. The device includes an over-center locking unit with levers having members to block and lock a door by exerting forces in opposite directions. One lever includes a section positionable under a door and an upright section to abut with the side of the door. The second lever has at least one, reversible, downwardly and angularly disposed floor contacting member. When the unit is in locked, over-center position, the angularly disposed member prevents door movement and attempts to open the door will increase the holding force. The floor contacting member is adjustable to accomodate different floor-to-door gaps. A quick release is provided for emergency situations.

REFERENCES:
patent: 688082 (1901-12-01), Geary
patent: 842691 (1907-01-01), Palmer
patent: 4421348 (1983-12-01), Kahn
patent: 4673203 (1987-06-01), Chezen
patent: 5056836 (1991-10-01), Wells
patent: 5135273 (1992-08-01), MacCalder

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