US PATENT SUBCLASS 210 / 269
.~ With rehabilitation means

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

263  DF  PARTICULATE MATERIAL TYPE SEPARATOR, E.G., ION EXCHANGE OR SAND BED {13}
269.~ With rehabilitation means {6}
270  DF  .~.~> Movable means for particle pickup and redeposit
271  DF  .~.~> Surface traversing type {2}
274  DF  .~.~> Including means to apply gas to bed
275  DF  .~.~> Backwash or blowback means {3}
280  DF  .~.~> With agitator
281  DF  .~.~> With access opening to normally closed casing

DEFINITION

Classification: 210/269

(under subclass 263) Apparatus in which means is provided for restoring the separating medium to the condition it was in before separation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

189, for such a device with a separate rehabilitation chamber.

190, for a chamber provided with external regenerating medium supply.

407+, for a filter combined with residue removal of liquid agitation means.

656+, and 660+, for processes of ion exchange or sorption involving rehabilitation of the separation medium. 791+, for separating processes involving rehabilitation of a filtering medium.