- zipper safety for ante blast doors, capable of enabling the same to completely get rid ante, as septum of full opening, the light passing through the door.

摘要

the present invention relates to a hinge for doors security doors armored, able to allow the same to completely get rid ante, planning of total opening.the light passing through the door, which is composed of a fixed component, consisting of a sturdy metal team whose wings, orthogonal among themselves.are crossed by a broad horizontal median notch, and a cut length, consisting of a sturdy metal stirrup to "u" can rotate within the notch.fulcrata on the inner face of one of the wings of the fixed element mentioned above.