| 摘要 |
FIELD: building. ^ SUBSTANCE: invention relates to protection devices of window or door aperture preventing from unauthorised penetration to premises and are capable of being effectively opened in emergency situations. The protection device includes an external rejection, pyroelements, each made of two half-frames. A gas generating composition and a primer are arranged in each pyroelement. The half-frames are connected either by means of a screw, with a ring tapering made in the wall of one element, or by means of shearing pins. The half-frames are fitted with facilities for fixing in the wall or door and window aperture and facilities for fixing in external rejection. ^ EFFECT: reliable emergency aperture release of rejection in emergency situations. ^ 7 cl, 5 dwg |
