US PATENT SUBCLASS 431 / 103
.~ Heated feed line section

Current as of: June, 1999
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431 /   HD   COMBUSTION

100  DF  INCANDESCENT MANTLE {7}
103.~ Heated feed line section {4}
104  DF  .~.~> Discrete flame holder heats section, e.g., auxiliary jet, etc.
105  DF  .~.~> Within mantle
106  DF  .~.~> Above upwardly fed mantle
107  DF  .~.~> Heated by downwardly fed mantle

DEFINITION

Classification: 431/103

(under subclass 100) Apparatus in which a fuel or air mantle feed line is heated either by an auxiliary heater or by heat conducted or radiated from the heated mantle.