US PATENT SUBCLASS 210 / 420
.~.~ Selective directive flow relative to filter

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

348  DF  FILTER {25}
418  DF  .~ With flow controller for material being treated {5}
420.~.~ Selective directive flow relative to filter {4}
421  DF  .~.~.~> Pivoted prefilt deflector
422  DF  .~.~.~> Plural outlets from filter casing {1}
424  DF  .~.~.~> Multi-way valve {1}
427  DF  .~.~.~> Backwash

DEFINITION

Classification: 210/420

(under subclass 418) Apparatus in which the controller selects the direction of fluid flow from a given source through or by the filter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

130+, for a fluid pressure responsive bypass.

190+, and 269+, for valve controlled means for bypassing a water softening apparatus during regeneration thereof.