METHOD AND DEVICE TO PROTECT BUILDINGS AND BUILDING STRUCTURES AGAINST DAMAGE CAUSED BY GAS-STEAM-AIR MIXTURE EXPLOSION Russian patent published in 2007 - IPC E04H9/00 

FIELD: building, particularly window opening devices used in different buildings and building structures to open windows during deflagration explosion.

SUBSTANCE: building or building structure protection device comprises inner leaf pivotally connected to window frame of window assembly. Window frame of window assembly is opened inwards the building. The inner leaf is opened outwards and is adapted to relief combustion products generated during explosion. Protection device also has locking mechanism adapted to secure inner leaf, membrane member sensitive to pressure increase inside the building fixedly connected to locking mechanism and resilient mechanism for inner leaf opening during explosion. The resilient mechanism is made as torsions. The torsions include a plate set made of high-strength steel and having rods used as retaining fingers for inner leaf hinges. One end of the plate set is fixed inside steel holder embedded in window assembly frame. Another end thereof is fastened to case mounted in inner leaf and serves as hinge.

EFFECT: increased reliability of window opening as deflagration explosion occurs in building or building structure.

3 cl, 1 dwg