US PATENT SUBCLASS 122 / 281
.~.~.~ Standpipe

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

235.11  DF  WATER TUBE {52}
275  DF  .~ Loop {3}
*  DD  .~.~ Over firebox {5}
281.~.~.~ Standpipe

DEFINITION

Classification: 122/281

(under subclass 275) Devices having a stand pipe with the

looped tubes over the firebox.

SEE OR SEARCH THIS CLASS, SUBCLASS:

132, for vertical fire tube boilers provided with looped water tubes.

185, for vertical flue boilers having a looped tube stand pipe.

244+, 308 and 309, for spur tube boilers having a stand pipe, with tubes over the firebox.