DOOR LOCKING DEVICE Russian patent published in 1998 - IPC

FIELD: systems of emergency opening of doors, applicable in doors of living spaces and production areas, provides for opening the door without keys in emergencies: smoking of rooms, fire, etc. SUBSTANCE: the device uses drive disk 1 hinge-joined to cross-bars 3 and 4 through shackles 2. Drive disk 1 has cut-outs 10 for locking bolt 8 and additional cut-out 13. Additional cut-out 13 provides for turning of drive disk 1 in the direction opposite to the direction of its turning at a usual opening of door 5, and for door opening in an emergency. To this end, the detachable stop, which restricts the turning of drive disk 1 at a usual door opening, is removed. EFFECT: enhanced reliability. 8 cl, 8 dwg