(under subclass 49.1) Device wherein the air flow control means is responsive to a sensing means which detects a presence of (1) a flame due to combustion or (2) a vaporous emission resulting from combustion.
SEE OR SEARCH CLASS
169, Fire Extinguishers, appropriate subclasses, for a specific fire extinguisher apparatus combined with a fire or smoke responsive control means; see, in particular,
56+, for such a condition responsive fire-extinguisher for a special application.
454, Ventilation,
257, for an inlet-ceiling-type air diffuser having an emergency smoke or fire responsive valve, subclass 342 for an outlet airway with an air pump and specific emergency smoke handling structure, subclass 357 for an outlet airway having an emergency smoke handling feature, and subclass 369 for fire dampers which cut off ventilated flow in response to elevated temperatures.
