US PATENT SUBCLASS 209 / 140
.~.~.~ Expanding

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.~.~.~ Expanding {1}
141  DF  .~.~.~.~> With deposition

DEFINITION

Classification: 209/140

(under subclass 138) Methods and means in which a vertically flowing gaseous current which expands as it rises in the sorting region is employed to suspend some of the components of the material treated.