US PATENT SUBCLASS 431 / 281
.~ Correlated controls

Current as of: June, 1999
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431 /   HD   COMBUSTION

278  DF  SEPARATELY SUPPLIED OR CONTROLLED, PHYSICALLY RELATED FLAME HOLDERS, E.G., DIVERSE FUELS, PILOT AND MAIN, ETC. {7}
281.~ Correlated controls

DEFINITION

Classification: 431/281

(under subclass 278) Apparatus having separate controllers for two flame holding sections that are interconnected by structure providing common or interlocked operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42, for the control or actuation of plural burners in which the sensor of one burner controls another; and subclass 60+ for the sequential operation of plural burners by a time,

program or condition responsive actuator.