Security door lock device

摘要

A high security adjustable keyless locking contrivance for preventing the forced opening of a hinged door of unoccupied homes or buildings. An engaging apparatus that incorporates a first armor structural plate combined with a first structural cylinder having a pair of first slots and a connecting bolt shaft, which first structural cylinder inserts into a conventional door knob bore hole with the bolt shaft passing through the existing door latch assembly in concert. A second armor structural plate combined with a second structural cylinder that matingly connects to said first structural cylinder from the opposite side of the hinged door, allowing the penetration of the connecting bolt shaft through the second armor structural plate bolt hole which will conjoin the two devices with a security fastener, thus sandwiching and securing the hinged door and door jamb between the two armor structural plates.

主权项

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.