US 5,845,433 AGranted

Anti-theft device for framed door

OwnerMichael J. Walshinventor

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Abstract

A device for preventing unauthorized prying of a door outward or forcing it inward from the plane of the door wherein the door is pivotally mounted on hinges in a door frame, the door and door frame each having interior surfaces, including a first member, including a base, for mounting to the interior surface of the door frame and having formed thereon a protrusion facing outward from the base toward the door, and a second member for mounting to the interior surface of the door, the second member, defined by a base, for attachment to the interior surface, and a body extending upward and away from the base having formed therein a recess facing outward toward the protrusion and arranged to pivot with the door away from and toward the protrusion as the door is opened and closed, wherein the first and second members are arranged for pivotal movement away from each other when the door is opened and into interlocking association when the door is closed in the frame to resist attempts to pry the door outward from the frame.

Claims11

Dependent claims

In an apparatus having a door for opening and closing access thereto, said door hingedly mounted in a door frame, said frame including top and bottom door sills held in spaced-apart arrangement by a pair of spaced-apart frame side jambs, said sills and jambs interconnected at their respective distal ends and lying in a common plane with said door, a device for preventing unauthorized prying of said door out of said common plane and away from said door frame side jambs, comprising:

a) a first member including a first base for mounting to said door frame and having one of a protrusion and recess facing outward from said first base toward said door;
and,
b) a second member for mounting to said door, defined by a second base and a body extending upward away from said second base and having the other of said protrusion and said recess, said second member facing outward toward said first part, said second member arranged to pivot with said door away from and into interlocking engagement with said first member as said door is opened and closed;
c) said second member further including a rear surface;
and,
d) a bar attached to said door frame, one against each said top and bottom door frame sills, each said bar terminating in a surface conforming to and closely spaced from said rear surface of said second member when said door is closed to resist attempts to pry said door sideways away from said frame side jamb.

3 more elements

In an apparatus having a door closing over its interior, for opening and closing access thereto, said door including exterior and interior surfaces and hingedly mounted in a door frame, said frame including top and bottom door sills held in spaced-apart arrangement by a pair of spaced-apart frame side jambs, said sills and jambs interconnected at their respective distal ends and lying in a common plane with said door, a device for preventing unauthorized prying of said door out of said common plane and away from said door frame side jambs, comprising:

a) a first member including a first base for mounting to said door frame and having one of a protrusion and recess facing outward from said first base toward said door;
and,
b) a second member for mounting to said door, defined by a second base and a body extending upward away from said second base and having the other of said protrusion and said recess, said second member facing outward toward said first member, said second member arranged to pivot with said door away from and into interlocking engagement with said first member as said door is opened and closed;
c) a third member, including a third base, for mounting to said interior surface of said door and having one of said protrusion and said recess facing outward from said third base toward said interior of said apparatus when said door is closed;
and,
d) a fourth member, including a fourth base for mounting against said door side jamb, and having the other of said protrusion and said recess from said third member facing outward toward said third member, said fourth member arranged to move with said door away from and into interlocking engagement with said third member as said door is opened and closed.

3 more elements

Dependencies are inferred from the claim text.