Patent ID: 9033378
Filing Date: 2015-05-19
Classification: E05C,Y10T

Abstract:
1. An adjustable security lock for use on door knob bore hole and door latch mechanism located on a door and a door frame, comprising: a first structural plate having a shape that is configured to fit against the door and door frame, the first structural plate having a first structural cylinder having a pair of first slots, with a connecting bolt fixedly connected to the first structural plate and protruding through an open end of the first structural cylinder; a second structural plate having a second structural cylinder having a pair of second slots; wherein the first structural plate is positioned on an outside surface of the door and door frame and having the first structural cylinder and connecting bolt passing through the door knob bore hole and the pair of first slots snugly fitting to the door latch mechanism; the second structural plate is positioned on an inside surface of the door and having the second structural cylinder passing through the door knob bore hole and the pair of second slots snugly fitting to the door latch mechanism, the second structural plate being attached to the first structural plate by the connecting bolt and a fastener.