US PATENT SUBCLASS 122 / 355
.~ Zigzag
Current as of:
June, 1999
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122 /
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LIQUID HEATERS AND VAPORIZERS
235.11
DF
WATER TUBE
{52}
355
.~ Zigzag {3}
356
DF
.~.~
> Fluid fuel
*
DD
.~.~
> Over bridge wall {2}
359
DF
.~.~
> Over firebox
DEFINITION
Classification: 122/355
(under subclass 235) Devices having the water tubes so arranged that the water passes back and forth in a zigzag manner through the tubes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247+, and 258, for zigzag tubes where the water flows downwardly through the tubes.
275+, for looped tube boilers where the water flows through one tube and back through another.
305+, for spur tube boilers provided with an internal tube or partition, so that the water will flow out and back through the same tube.
