US PATENT SUBCLASS 34 / 221
.~.~.~.~ Caused by jet action

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

523  DF  APPARATUS {40}
201  DF  .~ Houses, kilns, and containers {6}
218  DF  .~.~ With gas or vapor circulation for contact with treated material {8}
219  DF  .~.~.~ Recirculation of treating gas or vapor {5}
221.~.~.~.~ Caused by jet action

DEFINITION

Classification: 34/221

(under subclass 219) Apparatus in which the treating gas or vapor is caused to recirculate by the jet action (Venture or aspirating effect) caused by injection or flow of treating gases or vapors into the treating chamber.

(1) Note. Complete the search in this class, subclass 84 for jet devices which add a treating material to the treating gas or vapor and cause circulation thereof, and subclass 75 for direct contact condensers.