Closure fasteners – Bolt guards
Patent
1978-07-31
1979-12-11
Foss, J. Franklin
Closure fasteners
Bolt guards
70418, E05B 1700
Patent
active
041780272
ABSTRACT:
A door lock guard comprising two cooperating guard plates, the guard plates preferably having identical configurations, the first plate capable of being mounted on the edge of a door and the second plate capable of being mounted on the doorjamb which receives the door. Each guard plate includes a support plate having a generally rectangular shape and including a cutout which allows for the protrusion of either a latchbolt plate or a strike plate. A pair of flanges extend respectively in opposite directions from opposite edges of the support plate. Preferably, the flanges are perpendicular to the support plate. One of the flanges includes an aperture for receiving a tongue and the other flange includes a tongue which extends in generally parallel relation to the support plate. When the guard plates are mounted respectively on the door and the doorjamb, and the door is closed, the tongue of each cooperating plate fits within the aperture of the other plate to provide a lock guard which prevents unauthorized opening of the lock from either side of the door.
REFERENCES:
patent: 1399897 (1921-12-01), Singer
patent: 1814961 (1931-07-01), Phillips
patent: 3279840 (1966-10-01), Barone
patent: 3290081 (1966-12-01), Sushan
patent: 3592498 (1971-07-01), Raccuglia
patent: 3874717 (1975-04-01), Pratt
patent: 4017106 (1977-04-01), Salazar
LandOfFree
Door lock guard does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Door lock guard, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Door lock guard will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-307364