US PATENT SUBCLASS 432 / 41
.~ Of purger, purge period, scavenger or cleaner


Current as of: June, 1999
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432 /   HD   HEATING

36  DF  HAVING CONDITION RESPONSIVE CONTROL {12}
41.~ Of purger, purge period, scavenger or cleaner


DEFINITION

Classification: 432/41

(under subclass 36) Apparatus in which the control is of means dislodging, removing, collecting or flushing out a material undesirable at all times or at a particular time of operation.

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2, for a process including cleaning, purging or preventing undesirable accretion in a heating apparatus.

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431, Combustion,

29+, for a combustion device not having material heating features including a means automatically controlling a purging or scavenging arrangement.