Jimmy-proof door guard

Claim 1

A door guard assembly mountable on a hinged door having a lock and door jamb, comprising a right angle bar having mutually perpendicular first and second flanges, and first means for mounting the angle bar on the front side of the door near and parallel to its free edge so that the second flange extends forwardly from the front side of the door in a vertical plane; and a channel bar having a rectangular U-shaped cross section with an open side and with third and fourth flanges disposed parallel to each other and integral with a flat channel back, and second means for securing the channel member to the door jamb with the third flange abutting the door jamb, with the channel back facing forward, with the fourth flange disposed in a vertical plane parallel to the third flange, and with the open side of the channel bar facing rearwardly toward the door, said angle bar and channel member having substantially the same length and being mountable at the same height on the door and door jamb respectively and substantially centered at said lock so that the second flange enters between the third and fourth flanges to prevent entry of a tool between the angle bar and channel member to the lock when the door is closed, said first means comprises spaced holes in the first flange for receiving screws to secure the angle bar to the door, said second means comprises spaced other holes in the third and fourth flanges, the holes in the fourth flange being axially aligned with and larger than the holes in the third flange to permit insertion of screws and a screwdriver through the holes in the fourth flange to the holes in the third flange and to secure the channel bar to the door jamb.