Movable or removable closures – Facially opposed primary and auxiliary closure for common... – Auxiliary mounted for movement
Patent
1994-03-31
1994-11-22
Kannan, Philip C.
Movable or removable closures
Facially opposed primary and auxiliary closure for common...
Auxiliary mounted for movement
49 56, 49506, E05C 702
Patent
active
053656962
ABSTRACT:
A security door structure is affixed to an opening in a building wall exteriorly of a combination affixed glass door and sliding glass door to prevent in entrance by an intruder through the glass doors. The security door structure includes a first rigid metal frame with top and bottom rails and opposing vertical side rails and a plurality of rigid metal bars affixed between the rails. The metal bars are mounted at a predetermined distance from each other to prevent passage of a human body therebetween. The first metal frame is affixed exteriorly of the affixed glass door, and extends the same height and width as the affixed glass door. A second metal frame is pivotally mounted about a vertical axis to the first metal frame to swing between a closed position coplanar with the first metal frame and an open position pivoted exteriorly away from the coplanar position. The second metal frame includes top and bottom rails and opposing vertical side rails, and has a plurality of rigid metal bars affixed between the rails and spaced apart a distance from each other to prevent passage of a human body therebetween. A lock bracket is affixed to the interior face of the second metal frame and cooperates with a bracket mounted in the building wall opening interiorly of the security door structure, to permit selective locking of the pivotable door in the closed position, from the interior side of the security door structure.
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patent: 4937975 (1990-07-01), Zilkha
patent: 4962954 (1990-10-01), Ross
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