US PATENT SUBCLASS 431 / 57
.~.~ Manual reset of second burner required upon first burner extinguishment

Current as of: June, 1999
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431 /   HD   COMBUSTION

18  DF  TIMER, PROGRAMMER, RETARDER OR CONDITION RESPONSIVE CONTROL {26}
42  DF  .~ Sensor of first burner controls second burner, e.g., pilot and main, etc. {8}
57.~.~ Manual reset of second burner required upon first burner extinguishment

DEFINITION

Classification: 431/57

(under subclass 42) Apparatus wherein a second burner valve means is automatically closed upon sensed extinguishment of the first burner, and the second burner valve means must be manually opened for fuel to be supplied to the second burner for reignition.