Bank of two fire doors for an elevator

Details Bank of two fire doors for an elevator Bank of two fire doors for an elevator

B - Operations, Transporting

66

B

B66B 13/30 (2006.01)

Patent

CA 2097455

A fire door is adapted to be fitted to a landing doorway of an elevator shaft so as to extend abreast of a landing door of the elevator. Previously such a fire door was constructed sufficiently thick that it per se satisfied fire protection regulations; this resulted in a heavy fire door with a correspondingly heavy support structure. However, the fire protection characteristics of the fire door of the invention are so chosen that, when the landing door and the fire door are abreast of each other, their combined fire protection characteristics satisfy fire protection requirements imposed on a fire door by the applicable fire regulations.

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