(under subclass 256) Subject matter comprising a means for regulating the quantity of airflow dependent on a means for sensing the presence of either (1) gaseous emission from a sudden, unexpected flame of a serious nature or (2) a flame.
SEE OR SEARCH THIS CLASS, SUBCLASS:
28, for a chimney or stacktop with air current regulating means which is temperature responsive.
342, for a building outlet airway including an air pump and having means for controlling or dealing with smoke.
357, for other building outlet airways have 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.
