US PATENT SUBCLASS 209 / 32
.~.~.~ 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}
30  DF  .~.~ Successive {4}
32.~.~.~ Horizontal current {1}
33  DF  .~.~.~.~> With deposition

DEFINITION

Classification: 209/32

(under subclass 30) Methods and apparatus for separating components of mixed solids into grades which successively sift and suspend in gaseous currents flowing horizontally.

SEE OR SEARCH THIS CLASS, SUBCLASS:

24, and 25, for the combination in which the sifting and horizontal gaseous suspension grading are coincident.

133+, and 233+, appropriate subclass for the subcombinations of grading by gaseous suspension and sifting respectively.