US PATENT SUBCLASS 431 / 36
.~ Of or by burner feed supply heating structure

Current as of: June, 1999
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431 /   HD   COMBUSTION

18  DF  TIMER, PROGRAMMER, RETARDER OR CONDITION RESPONSIVE CONTROL {26}
36.~ Of or by burner feed supply heating structure {2}
37  DF  .~.~> By controlling admittance of feed to structure {3}
41  DF  .~.~> Supply of heat to heating structure controlled

DEFINITION

Classification: 431/36

(under subclass 18) Apparatus in which the control is of or by, a condition of heat generation or transfer structure by which fluid for supply to a combustion zone of an associated burner is heated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

11, for a process for preheating feed.

31, for a burner having an electrical heater controlled to preheat a burner or burner feeder before attempting ignition of the burner.