US PATENT SUBCLASS 250 / 339.15
.~.~.~.~ Sensing flame or explosion


Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
338.1  DF  .~ Infrared responsive {12}
339.01  DF  .~.~ With selection of plural discrete wavelengths or bands {6}
339.14  DF  .~.~.~ Detecting infrared emissive objects {1}
339.15.~.~.~.~ Sensing flame or explosion


DEFINITION

Classification: 250/339.15

Sensing flame or explosion:

(under subclass 339.14) Subject matter wherein the detection means sense infrared wavelengths emitted by the combustion of solids or gases.

SEE OR SEARCH CLASS

340, Communication: Electrical,

578+, for flame responsive indication systems.