US PATENT SUBCLASS 209 / 24
.~.~.~ Horizontal current

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}
22  DF  .~.~ Coincident {4}
24.~.~.~ Horizontal current {1}
25  DF  .~.~.~.~> With deposition

DEFINITION

Classification: 209/24

(under subclass 22) Processes and apparatus in which there are coincident grading suspension and sifting, a horizontal current of gas, generally air, being employed to effect the suspension.

(1) Note. This subclass may include cases where the material is carried by the sifter while subjected to the suspending current, as well as cases where the material selectively suspended by the gaseous current is delivered as a horizontal current against sifting means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

250, for sifters having means to feed material thereto by suspension in a fluid.