A security door hinge assembly is provided, comprising a door frame structure, having at least a head member, a first jamb member and a second jamb member, and at least one door leaf. The door leaf further comprises a leaf frame structure, having at least a top rail member, a bottom rail member, a hinge stile member and a lock stile member; an inner leaf panel, mounted to a first side of said leaf frame structure and extending past said hinge stile member, so as to form an inner leaf flange; an outer leaf panel, mounted to a second side of said leaf frame structure, opposite said first side, and extending past said hinge stile member, so as to form an outer leaf flange, and wherein, in use, said door leaf is operable between a first closed position and a second open position. The security door hinge assembly further comprises a hinge chamber positioned between said first jamb member and said hinge stile; a hinge-mount bracket, coupled to said first jamb member; a hinge mechanism, having at least one pivot axis and which is located within said open hinge chamber and adapted to pivotally mount said door leaf to said hinge-mount bracket, and wherein, in said first closed position, said inner leaf flange is in an exteriorly overlapping engagement with at least a portion of said hinge mount bracket, so as to prevent access to said hinge mechanism.

A security door hinge assembly is provided, comprising a door frame structure, having at least a head member, a first jamb member and a second jamb member, and at least one door leaf. The door leaf further comprises a leaf frame structure, having at least a top rail member, a bottom rail member, a hinge stile member and a lock stile member; an inner leaf panel, mounted to a first side of said leaf frame structure and extending past said hinge stile member, so as to form an inner leaf flange; an outer leaf panel, mounted to a second side of said leaf frame structure, opposite said first side, and extending past said hinge stile member, so as to form an outer leaf flange, and wherein, in use, said door leaf is operable between a first closed position and a second open position. The security door hinge assembly further comprises a hinge chamber positioned between said first jamb member and said hinge stile; a hinge-mount bracket, coupled to said first jamb member; a hinge mechanism, having at least one pivot axis and which is located within said open hinge chamber and adapted to pivotally mount said door leaf to said hinge-mount bracket, and wherein, in said first closed position, said inner leaf flange is in an exteriorly overlapping engagement with at least a portion of said hinge mount bracket, so as to prevent access to said hinge mechanism.

A hinge assembly includes a hinge plate having a pin-receiving portion at a first end defining a passageway along the first end, and including a plurality of mounting holes. A pivot arm has a pin-receiving portion at a first end defining a passageway that is substantially coaxial with the passageway of the hinge plate. A hinge pin is disposed in the passageways to pivotally couple the pivot arm to the hinge plate. The pivot arm is pivotable between a closed position and an open position. The pivot arm includes a domed portion forming a cavity positioned to overlie one of the mounting holes in the hinge plate when the pivot arm is in the closed position.

A hinge assembly includes a hinge plate having a pin-receiving portion at a first end defining a passageway along the first end, and including a plurality of mounting holes. A pivot arm has a pin-receiving portion at a first end defining a passageway that is substantially coaxial with the passageway of the hinge plate. A hinge pin is disposed in the passageways to pivotally couple the pivot arm to the hinge plate. The pivot arm is pivotable between a closed position and an open position. The pivot arm includes a domed portion forming a cavity positioned to overlie one of the mounting holes in the hinge plate when the pivot arm is in the closed position.

The present disclosure concerns a closure system comprising a closure hinged to a fame by a hinge device that permits transition of the closure between open and closed positions by a combined linear movement and rotational displacement.