Patent attributes
A door locking device including a non-tethered latch having two or more elongate shafts extending in a downward direction from lateral portions of the latch, the shafts being oriented perpendicular to one another. The latch also includes a curved handle protruding from the top of the latch. The latch is configured to mate with locking plates configured to be mounted to a door and a door frame or wall adjacent to where the door opens. A lower end of at least one of the vertical elongate shafts of the latch is made of a flexible material and is wedge-shaped, having a shelf at the top of the wedge that is configured to engage the bottom edge of the respective locking plate to which it mates, at least temporarily locking the latch and making it more difficult to disengage for an unwanted intruder seeking to enter a classroom.