Door lock design

Details Door lock design Door lock design

1995-04-13

1996-11-26

Lindsey, Rodney M.

Closure fasteners

Extension link

Slotted bar

292262, 292270, E05C 1716

Patent

active

055777830

ABSTRACT:
A door lock that has a locking member which cooperates with a latching mechanism to secure a door in a closed position. The locking member also cooperates with a U-shaped plate to limit the movement of the door in a partially opened position. The locking member is attached to the door. The U-shaped plate and latching mechanism are coupled to a wall by a mounting bracket and a hinge. The hinge has an inner sleeve that is attached to a hinge pin and a rotatable outer sleeve which has a slot and a spring loaded button. The spring loaded button can cooperate with a notch in the inner sleeve to lock the position of the outer sleeve. When the door is closed, the locking member rotates the outer sleeve until the button is captured by the notch of the inner sleeve. The slot of the outer sleeve captures the locking member and prevents the door from being opened until the button is released from the inner sleeve notch.

REFERENCES:
patent: 781743 (1905-02-01), Royce
patent: 2548681 (1951-04-01), Oswald
patent: 2562916 (1951-08-01), Hoffman

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