ROLLED INTERNAL WINDOW GUARD Russian patent published in 2011 - IPC E06B9/18 

FIELD: construction.

SUBSTANCE: rolled internal window guard comprises a roller blind web in the form of joined metal horizontal plates, rolled elastically with the help of a torsion spring into a roll placed above the window, a manual mechanism of web lowering and its locking in this position with a handle pin installed in the middle of a lower end profile of a roller blind and entering a ring of a fixator fixed on the lower support surface. The fixator is made of an alloy with effect of thermomechanical shape memory in the form of vertical scissors of two plates facing each other with planes, hingedly connected in the central part, bent in the upper working part of scissors until contact of the ends to form a closed ring. Lower ends of plates that correspond to handles of scissors, are rigidly fixed to a convex surface of an elastic round plate placed in a groove in a floor in front of the guard with the possibility of its free straightening aflush with the floor under action of a load at the axial limitation of the plate along periphery from the exit of the groove.

EFFECT: invention will make it possible to increase public safety during fire due to their emergency evacuation through window and door openings.

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