US PATENT SUBCLASS 122 / 50
.~.~.~ Flue

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

44.1  DF  FIRE TUBE {11}
*  DD  .~ Horizontal or inclined {1}
*  DD  .~.~ Water firebox {1}
50.~.~.~ Flue

DEFINITION

Classification: 122/50

(under subclass 44) Fire tube boilers that are horizontal or somewhat inclined from the horizontal having fire tubes that communicate with a large flue within the boiler, that may serve as a firebox.

SEE OR SEARCH THIS CLASS, SUBCLASS:

78, 80, 95, and 149, for special features.

109, for inclined fire tube boilers.