US PATENT SUBCLASS 209 / 141
.~.~.~.~ With deposition

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

132  DF  FLUID SUSPENSION {2}
133  DF  .~ Gaseous {7}
138  DF  .~.~ Vertical current {2}
140  DF  .~.~.~ Expanding {1}
141.~.~.~.~ With deposition

DEFINITION

Classification: 209/141

(under subclass 140) Methods and means in which a vertically flowing gaseous current which expands as it rises in the sorting region is employed, and provision is made for the collection, in whole or in part and as one or more grades, of the material suspended.