Door locking device

A quick-release door locking device comprising:

• a door engaging member adapted to be attached to a free-end of a door that opens in an outwardly direction with respect to a door frame lacking installed hardware, the door engaging member including a plurality of planar surfaces including a first planar surface which is adapted to abut a stop of the door frame when the outwardly opening door is closed;
• a threaded shaft adapted to be positioned on an opposite side of the door than the outwardly direction in which it opens, the threaded shaft having a first end pivotably attached to the door engaging member and a second end opposite the first end, the threaded shaft being manually pivotably movable between unlocked and locked positions;
• a retaining nut disposed on the threaded shaft for axial movement between the first and second ends thereof;
• a wedge member slidably arranged on the threaded shaft between the first end thereof and the retaining nut, the wedge member being movable into a securing position, wherein the wedge member is adapted to be wedded between the retaining nut and the stop of the door frame for positionally constraining the outwardly opening door thereagainst and for preventing opening of the door from outside, when the threaded shaft is in the locked position, and being quickly releasable from the securing position, for rapidly opening the door from inside, when the threaded shaft is moved toward the unlocked position;
• and
• a cam member disposed on the first end of the threaded shaft;
• and
• a spring member attached to the door engaging member and cooperatively engaging the cam member for biasing the threaded shaft in the unlocked and locked positions, respectively, the threaded shaft being quickly movable from the unlocked and locked positions when a moment sufficient to overcome the biasing of the sprin member is applied thereto;
• and
• wherein the cam member has a generally rectangular parallelepiped configuration.

A quick-release door locking device comprising:

• a door engaging member attachable to a free-end of a door, the door engaging member including a first planar surface, a second planar surface arranged substantially parallel to the first planar surface, and a third planar surface arranged generally perpendicularly therebetween, the first planar surface being adapted to engage a stop of the door frame when the outwardly opening door is closed;
• a threaded shaft having a first end pivotably mounted to the door engaging member and a second end opposite the first end, the threaded shaft being manually pivotably movable between an unlocked position, wherein the threaded shaft forms an acute angle with respect to the first planar surface of the door engaging member, and a locked position, wherein the threaded shaft forms an obtuse angle with respect to the first planar surface of the door engaging member;
• a retaining nut disposed on the threaded shaft for axial movement between the first and second ends thereof;
• a wedge member slidably arranged on the threaded shaft between the first end thereof and the retaining nut, the wedge member being movable into a securing position, wherein the wedge member is adapted to be wedged between the retaining nut and the stop of the door frame for preventing opening of the door from outside, when the threaded shaft is in the locked position, and being quickly releasable from the securing position, for rapidly opening the door from inside, when the threaded shaft is moved toward the unlocked position;
• a cam member disposed on the first end of the threaded shaft;
• and
• a spring member attached to the door engaging member and cooperatively engaging the cam member for biasing, the threaded shaft in the unlocked and locked positions, respectively, the threaded shaft being quickly movable from the unlocked and locked positions when a sufficient moment is applied thereto.

A quick-release door locking device comprising:

• a door engine member adapted to fit on a free-end of a door that opens in an outwardly direction with respect to a door frame devoid of installed hardware, the door engaging member including a plurality of planar surfaces including a first planar surface which is adapted to abut a stop of the door frame when the outwardly opening door is closed;
• a shaft adapted to be positioned on an opposite side of the door than the outwardly direction in which it opens, the shaft having a first end pivotably mounted to the door engaging member and a second end opposite the first end, the shaft being manually pivotably movable between unlocked and locked positions;
• and
• a wedge member slidably arranged on the shaft and adapted to engage the stop of the door frame, for positionally constraining the outwardly opening door thereagainst and for preventing opening of the door from outside, when in a securing position, and being quickly releasable from the securing position, for rapidly opening the door from inside, when the shaft is moved toward the unlocked position;
• and
• further comprising:
• a cam member disposed on the first end of the shaft;
• and
• a spring member attached to the door engaging member and cooperatively engaging the cam member for biasing the shaft in the unlocked and locked positions, respectively, the shaft being quickly movable from the unlocked and locked positions when a moment sufficient to overcome the biasing of the spring member is applied thereto.