US Patent 11280110 Entry door frame reinforcement assembly

A door frame profile and reinforcement assembly to increase the resistance of an entry door and door frame to forced entry by an intruder. Increased resistance is achieved by fitting and securing a U-shaped bar within a machined slot in the back of the door frame and attaching a shaped plate or plates that fits within the shaped bar and retains the door's throw bolt of the deadbolt and/or latch of the door lock. Optionally, with stronger door frames, the shaped plate alone may suffice, and the plate can be modified to a simple L-shaped form, a portion of which is inserted into a narrow groove which replaces the machined slot.