US PATENT SUBCLASS 431 / 62
.~ Of diverse feed or feed rate in starting, e.g., enriching fuel mixture in starting, etc.

Current as of: June, 1999
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431 /   HD   COMBUSTION

18  DF  TIMER, PROGRAMMER, RETARDER OR CONDITION RESPONSIVE CONTROL {26}
62.~ Of diverse feed or feed rate in starting, e.g., enriching fuel mixture in starting, etc. {1}
63  DF  .~.~> Combustion sensor establishes "run" feed

DEFINITION

Classification: 431/62

(under subclass 18) Apparatus including structure providing (1) feed rate variations or modulation within the period between the initial demand actuation and the attainment of the full "run" position of the control structure; or (2) a shift from "off" to a combustion initiating feed rate, then to a running feed rate; or (3) a shift from a starting fuel or fuel mixture to a "running" fuel or fuel mixture; or (4) a shift from a starting fuel charge to a "running" combustible feed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

29+, for a control system that feeds a scavenging fluid to the burner before starting combustion.