US PATENT SUBCLASS 431 / 72
.~ Of igniter and feed controlled sequence

Current as of: June, 1999
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431 /   HD   COMBUSTION

18  DF  TIMER, PROGRAMMER, RETARDER OR CONDITION RESPONSIVE CONTROL {26}
72.~ Of igniter and feed controlled sequence {2}
73  DF  .~.~> By timer or retarder
74  DF  .~.~> Combustion zone sensor controls igniter

DEFINITION

Classification: 431/72

(under subclass 18) Apparatus including structure by which feed means and a means for igniting the fed fuel are operated at different times or for different time intervals.