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Class Information
Number: 236/49.2
Name: Automatic temperature and humidity regulation > Ventilator type > Responsive to fire or smoke
Description: 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.

Patents under this class:

Patent Number Title Of Patent Date Issued
8493221 Filter fouling detection using comparative temperature rise analysis Jul. 23, 2013
8313038 Telecom shelter cooling and control system Nov. 20, 2012
8249731 Smart air ventilation system Aug. 21, 2012
7714731 Detection of air filter clogging and provision of emergency ventilation in an outdoor electronics cabinet cooled by ambient forced air May. 11, 2010
7710720 Electronic device and fire protecting mechanism of the electronic device May. 4, 2010
7261243 Thermostat responsive to inputs from external devices Aug. 28, 2007
6844691 Ventilator having an abnormal operation indication device Jan. 18, 2005
6072397 Method and apparatus for reducing flame emissions from an electronics enclosure Jun. 6, 2000
6055848 Air quality measuring device May. 2, 2000
5171184 Tensioned fire damper assembly and method Dec. 15, 1992
5153563 Fire sensing system, process for sensing fire and environment monitor Oct. 6, 1992
4958687 Fire damper Sep. 25, 1990
4911065 Damper with override control Mar. 27, 1990
4903894 Ventilation control procedure and ventilation control means Feb. 27, 1990
4867376 Air control system Sep. 19, 1989
4817912 Bi-metal operator for smoke, fire and air control damper Apr. 4, 1989
4463896 Methods and apparatus for the control of smoke and fire in buildings Aug. 7, 1984
4432272 Motor operated fire damper Feb. 21, 1984
4181253 Ceiling air diffuser and induction apparatus Jan. 1, 1980
4084744 Fire damper Apr. 18, 1978
4080978 Smoke, fire and air control damper Mar. 28, 1978
4058253 Method and apparatus for conservation of energy and containment and evacuation of smoke in a high rise building Nov. 15, 1977

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