US PATENT SUBCLASS 122 / 307
.~.~ Central standpipe
Current as of:
June, 1999
Click
HD
for Main Headings
Click for
All Classes
Internet Version by
PATENTEC
© 1999
Terms of Use
122 /
HD
LIQUID HEATERS AND VAPORIZERS
235.11
DF
WATER TUBE
{52}
305
DF
.~ Spur {8}
307
.~.~ Central standpipe {3}
308
DF
.~.~.~
> Fluid fuel
309
DF
.~.~.~
> Annular firebox
310
DF
.~.~.~
> Central magazine
DEFINITION
Classification: 122/307
(under subclass 305) Devices having a central stand pipe in which the spur tubes are radial.
SEE OR SEARCH THIS CLASS, SUBCLASS:
133, for vertical fire tube boilers provided with radial spur tubes.
143, for horizontal flue boilers provided with spur water tubes internally.
173, for vertical flue boilers provided with internal horizontal spur tubes.
180, for vertical flue boilers with vertically aligned fire tubes and having spur water tubes. 181, for vertical flue boilers with vertical spurs.
244+, for stand pipes provided with coiled or looped tubes.
281, for stand pipe boilers of the water tube type provided with radial looped tubes over the firebox.
342, for spur tube drums.
475, for this type of boiler with a superheater.
