Patent ID: 11859421
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
10. A door locking device for securing an out-swing door against forced entry, the door having a planar door exterior major surface disposed in spaced opposed relationship to a planar door interior major surface, the door having a door inside edge bridging in perpendicular intersecting relationship from the door exterior major surface to the door interior major surface, the door supported on a set of door hinges for swinging movement about an out-swing door hinge vertical axis proximate a door inside exterior corner defined by intersection of the door inside edge with the door exterior major surface, the door having a door outside edge opposite the door inside edge, the door outside edge bridging in perpendicular intersecting relationship from the door exterior major surface to the door interior major surface in perpendicular intersecting relationship, the door outside edge intersecting the door interior major surface along a continuous door outside interior corner defining a respective door outside interior axis extending in the vertical direction, said device comprising:
a mounting plate configured to be secured against the door interior major surface by an elongated threaded fastener combination extending through the door and said mounting plate;
said mounting plate configured to support an elongated hinge pin assembly proximate the door outside interior corner, said hinge pin assembly having a hinge pin vertical axis spaced from the door outside interior axis, said hinge pin assembly supported for rotation movement relative to said mounting plate about said hinge pin vertical axis, said hinge pin assembly supported for vertical translation movement relative to said mounting plate along said hinge pin vertical axis between a hinge pin uppermost position and a hinge pin lowermost position;
a clasp swing plate configured to be secured to said hinge pin assembly for pivoting movement relative to said mounting plate about said hinge pin vertical axis through a limited range of motion between an unlocked position extending substantially parallel to a first interior surface of said mounting plate and a locked position extending substantially perpendicular to said mounting plate to engage a door frame anchor bolt spaced apart from said hinge pin vertical axis, said door frame anchor bolt having an anchor bolt primary axis extending in the horizontal direction substantially parallel to said mounting plate in spaced relationship apart from said hinge pin vertical axis, said clasp swing plate comprising a clasp cut-out, said clasp cut-out defining a clasp anchor bolt aperture in said clasp swing plate, said clasp cut-out having a lower major region in open communication with an upper minor region above said lower major region, said clasp cut-out configured to clear and receive in said lower major region an enlarged anchor bolt head when said clasp swing plate is raised along said hinge pin vertical axis to a clasp uppermost position relative to said mounting plate, when said clasp is lowered along said hinge pin vertical axis to a clasp lowermost position relative to said mounting plate said clasp cut-out configured to receive in said upper minor region only an anchor bolt stem smaller than said enlarged anchor bolt head, said anchor bolt stem extending to a mounting bolt anchor plate from said enlarged anchor bolt head, said clasp swing plate biased by force of gravity to move downward from said clasp uppermost position to said clasp lowermost position when said clasp swing plate proximate said hinge pin vertical axis is received in a vertical locking channel defined in said mounting plate proximate said hinge pin vertical axis, said vertical locking channel preventing pivoting movement of the clasp swing plate away from the locked position at said hinge pin vertical axis, said enlarged anchor bolt head preventing pivoting movement of the clasp swing plate in said lowermost position away from the locked position at said clasp cut-out upper minor region, said clasp swing plate positively retained in said lowermost position by biasing force of gravity;
said mounting plate comprising a set of first receiver ears spaced along said hinge pin vertical axis;
said clasp swing plate comprising a set of second receiver ears spaced along said hinge pin vertical axis;
said mounting plate comprising a set of first receiver bays spaced along said hinge pin vertical axis adjacent each of said first receiver ears to receive corresponding of said second receiver ears;
said clasp swing plate comprising a set of second receiver bays spaced along said hinge pin vertical axis adjacent each of said second receiver ears to receive corresponding of said first receiver ears;
each of said first receiver ears comprising a first receiver aperture sized to receive a corresponding second receiver annular wall in said uppermost position of said clasp swing plate;
each of said first receiver ears comprising a first receiver top surface outside said first receiver aperture, said first receiver top surface configured to engage a corresponding second receiver bottom surface outside a second receiver annular wall bottom surface; and
said first receiver top surface comprising a first receiver rest defining a first receiver uppermost height, said first receiver top surface comprising a first locking channel bottom wall defining a first receiver lowermost height, said first receiver top surface comprising a first declined slide surface defining a first receiver differential height between said first receiver uppermost height and said first receiver lowermost height.