US PATENT SUBCLASS 209 / 33
.~.~.~.~ With deposition

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

12.1  DF  PLURAL, DIVERSE SEPARATING OPERATIONS {17}
21  DF  .~ Gaseous suspension and sifting {2}
30  DF  .~.~ Successive {4}
32  DF  .~.~.~ Horizontal current {1}
33.~.~.~.~ With deposition

DEFINITION

Classification: 209/33

(under subclass 32) Methods and means for successively sifting and separating by current of gas or air where there is also collection of part or all of the material carried off in suspension and the suspending current impinges horizontally on the material.