US PATENT SUBCLASS 209 / 477
.~.~ Chutes, tables, and receptacles


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

422  DF  STRATIFIERS {6}
*  DD  .~ With pneumatic treatment {3}
477.~.~ Chutes, tables, and receptacles


DEFINITION

Classification: 209/477

(under subclass 422) Apparatus including stationary impermeable receptacles, chutes, and tables which receive material and means for subjecting the material to gaseous currents, so that the heaviest constituents of the material may settle as a stratum and the lighter constituents either form relatively displaced strata or are removed by the gaseous current.