WINDOW BLOCK Russian patent published in 1997 - IPC

FIELD: construction of ground industrial, public, residential buildings; applicable in the regions with potential danger of explosion effect and some elemental phenomena. SUBSTANCE: air shock wave acts on glazing 6, stiles of external movable sash of angles and middle horizontal and vertical members of stiles of T-shaped section 5 causes their displacement and compression deformation of yielding material 7 over the periphery of carrying frame 1 between stiles of the internal and external sashes. Further on, dynamic action is transmitted to stile of internal movable sash from channel 4 causing its displacement and compression deformation of the layer of yielding material 7. Limit compression of the layer of yielding material 7 results in turning of links of two-link hinge fixing member 14 between stiles of internal sashes and flange of carrying metal T-shaped frame, and horizontal weighting bar 13 is released. Bar 13 moves downward over guides of rod 10 and tensions flexible protective curtain 11 to close the full window sash. EFFECT: higher efficiency. 2 cl, 3 dwg