(under subclass 339) Subject matter wherein the air exhausting means includes means for controlling or dealing with the gaseous emission from a sudden, unexpected fire of a serious nature.
(1) Note. The claimed presence of a heat sensitive element, e.g., a fusible link considered adequate if it is disclosed for causing the ventilator to control or deal with any smoke
caused by the fire.
SEE OR SEARCH THIS CLASS, SUBCLASS:
28, for a chimney or stacktop with air current regulating means which is temperature responsive.
257, for a building inlet airway including an emergency smoke or fire responsive valve.
342, for a building outlet airway including an air pump and having means for controlling or dealing with smoke.
369, for fusible release controlled fire dampers. SEE OR SEARCH CLASS
126, Stoves and Furnaces,
287.5, for fusible release dampers for stoves or furnaces.
169, Fire Extinguishers, particularly
42, and 56+ for fire extinguishing apparatus responsive to smoke or fire.
