US PATENT SUBCLASS 122 / 132
.~.~.~ Radial loop

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

44.1  DF  FIRE TUBE {11}
114  DF  .~ Vertical {13}
130  DF  .~.~ Water tube {3}
132.~.~.~ Radial loop

DEFINITION

Classification: 122/132

(under subclass 130) Devices in which the water tubes are looped and arranged around the boiler.

SEE OR SEARCH THIS CLASS, SUBCLASS:

185, for vertical flue boilers with looped water tubes around a stand pipe within the flue.

244, and 281, for water tube boilers having a stand pipe with water tubes surrounding it.