FIRE PROTECTION DEVICE OF ELEVATOR DOOR AT STAIRCASE LANDING Russian patent published in 2003 - IPC

FIELD: construction engineering, particularly, designs of fire protection devices of elevator doors. SUBSTANCE: staircase landing elevator door has covering plate with insulation mass, with covering plate facing staircase landing, and steel accessories located in vertical direction of door and connected with covering plate. Steel accessories are made in form of box whose plate forming surface facing the shaft is connected to covering plate with help of side plates so that steel accessories cross-section presents trapezium narrowing towards shaft and passes through insulation mass. Accessories surface facing shaft has paint layer foaming under effect of heat. EFFECT: higher reliability and stability of fire protection of elevator door of staircase landing. 7 cl, 1 dwg