Patent ID: 8857864

Claim:
A tamper proof lock mountable to a door, wherein the door has an outside end, an inside end and a door frame having a hole and a strike plate, wherein the strike plate is mounted to a portion of the door frame, said lock comprising: a. a wedge bolt having a first end, a second end and an oblique surface disposed on said first end of said wedge bolt, said oblique surface is accessible from the outside end of the door and said second end of said wedge bolt is movably secured to the door, whereby if said oblique surface comes in contacting engagement with the strike plate, said wedge bolt becomes retracted in the door and if said oblique surface clears the contacting engagement and becomes aligned with the hole, said wedge bolt becomes extended from the door and seated in the hole to retain the door in its closed position; and b. a shield having a first end, a second end, said second end of said shield is configured to be movably secured to the door, said first end of said shield is substantially parallelly disposed to said wedge bolt, whereby when said wedge bolt becomes extended and seated in the hole, said first end of said shield is configured to extend and block at least a portion of said oblique surface against an attempt to access said oblique surface approaching from the outside end.