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7347463 |
Concealed door furniture fixing method and assembly
A furniture plate assembly extends over a mortise lock in a door and contains a pair of side plates extending over each side of the door, the side plates being clamped against the door by internal...
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6826937 |
Lock with locking elements respectively fitted to inner and outer sides of a door
A bi-directional lock is used on a door of a house; which is comprised of inner and outer locking elements respectively fitted to inner and outer sides of the door so that people inside the house...
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4854622 |
Door assembly incorporating means to increase resistance to forced entry
One of the most popular ways of gaining access to a locked premise is through forced entry of a door assembly. Presented is a door assembly incorporating a system of components cooperating with a...
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4832388 |
Door assembly and components thereof applicable to increase resistance to forced entry
One of the most popular ways of gaining access to a locked premise is through forced entry of a door assembly. Presented is a door assembly incorporating a system of components cooperating in a...
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4732418 |
Knob latch
A door latch employs removable standoff posts in a concealed mounting, and a lockable latching mechanism which includes a locking slide manually actuatable from the inside of the door and movable...
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4688409 |
Drop-bolt door lock assembly
A high security drop-bolt lock assembly for a door includes a cylinder lock carried by a guard plate positionable on the outside of the door with the cylinder lock within the door, and a drop-bolt...
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4633690 |
Cylinder anchor
An improved lock cylinder assembly is mountable in a lock case and includes a lock body having an exterior side wall. The lock cylinder assembly is mountable in the lock case and fixable in a...
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4550939 |
Security strike assembly
A security strike plate assembly comprises a strike plate that is mounted directly on the door framing by rigid bushings and mating screws. Holes are drilled through the door jamb and into the door...
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4530223 |
Guard for key cylinder
A rim cylinder protection unit includes a single flat thick solid hardened steel guard plate counterbored to receive the rim of the cylinder. The cylinder is secured to the plate and prevented from...
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