US PATENT SUBCLASS 209 / 461
.~.~.~.~ With agitators or conveyors

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

422  DF  STRATIFIERS {6}
*  DD  .~ With liquid treatment {3}
*  DD  .~.~ Stationary bed {3}
*  DD  .~.~.~ Receptacles {1}
461.~.~.~.~ With agitators or conveyors {2}
462  DF  .~.~.~.~.~> Reciprocating
463  DF  .~.~.~.~.~> Rotating {2}

DEFINITION

Classification: 209/461

(under subclass 422) Stationary receptacles having substantial depth in which material mingled with liquid, either accompanying or added, is treated, so that the heaviest constituents of the material may settle as a stratum, while the lighter constituents may either form relatively displaced strata or be moved away by the liquid, said receptacles being associated with agitators of types not classifiable under the hereinunder-indented subclasses.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

413+, for fixed filter mediums and a movable stirrer or cleaner.