US PATENT SUBCLASS 431 / 44
.~.~.~ Igniter deenergized by fuel pressure variation in start effort

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}
43  DF  .~.~ With electrical igniter {4}
44.~.~.~ Igniter deenergized by fuel pressure variation in start effort

DEFINITION

Classification: 431/44

(under subclass 43) Apparatus in which the igniter is deenergized by a means responsive to a pressure variation in a burner feed line produced by the sensing of combustion at one of the burners.