US PATENT SUBCLASS 34 / 130
.~.~ With gas or vapor flow for contact with treated material

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
108  DF  .~ Rotary drums or receptacles {7}
130.~.~ With gas or vapor flow for contact with treated material {5}
131  DF  .~.~.~> Recirculation of treating gas or vapor
132  DF  .~.~.~> With heating means {2}
135  DF  .~.~.~> Axial treated material feed type {2}
138  DF  .~.~.~> Gas or vapor conducting conduits in drum or receptacle
139  DF  .~.~.~> With drum or receptacle enclosing housing

DEFINITION

Classification: 34/130

(under subclass 108) Apparatus including means to contact the material undergoing treatment with a gas or vapor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

140, and 141, for drums or receptacles having foraminous walls which act only to vent gases or vapors.