E - Fixed Constructions – 06 – B
Patent
E - Fixed Constructions
06
B
E06B 5/00 (2006.01) B66B 13/30 (2006.01) E06B 5/16 (2006.01)
Patent
CA 2084122
With this fireproof shaft door, an improved heat insulation towards the shaft side is achieved in the case of a fire at the lobby side, whereby the lift shaft in the case of fire remains maintained as escape path for the fire service. A door box (24), which is filled with heat-insulating fields and heat-insulating mats, is arranged at the lobby side at a frame (23), which is carried by a door suspension (14), consists of metal profile plate and is guided by a guide blade (22). Horizontal spars (28), which are provided with ventilation holes and at the shaft side carry heat-insulating plates (29) covering the door front, are arranged at the frame (23) at the shaft side. The first hollow space (30), which is formed by the heat- insulating plates (29) spaced from the frame (23), acts as natural chimney, in which fresh air denoted by A circulates.
Ag Inventio
Riches Mckenzie & Herbert Llp
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