US PATENT SUBCLASS 34 / 134
.~.~.~.~ Heat exchange and/or gas or vapor conducting conduits in drum or receptacle

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
108  DF  .~ Rotary drums or receptacles {7}
130  DF  .~.~ With gas or vapor flow for contact with treated material {5}
132  DF  .~.~.~ With heating means {2}
134.~.~.~.~ Heat exchange and/or gas or vapor conducting conduits in drum or receptacle

DEFINITION

Classification: 34/134

(under subclass 132) Apparatus in which either or both, (1) indirect heat exchange conduits, or (2) conduits for conducting the treating gas or vapor are located within the drum or receptacle.

(1) Note. The conduits may be part of or attached to the drum or receptacle walls.

(2) Note. For other treating gas or vapor conduits without heating means, search this class, subclass 138.

SEE OR SEARCH THIS CLASS, SUBCLASS:

280+,