US PATENT SUBCLASS 210 / 394
.~.~.~ Discharging inside, e.g., internal-type drum

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

348  DF  FILTER {25}
359  DF  .~ Movable medium {12}
391  DF  .~.~ With cleaning means {5}
394.~.~.~ Discharging inside, e.g., internal-type drum

DEFINITION

Classification: 210/394

(under subclass 391) Apparatus in which the moving filter medium encloses a space and the cleaning means acts to return residue to said space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

194+, for recirculation.

403, for an internal feed type rotary drum filter without cleaning means.