US PATENT SUBCLASS 210 / 312
.~.~.~ Sediment discharge means

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

294  DF  DIVERSE DISTINCT SEPARATORS {3}
295  DF  .~ Including a filter {5}
299  DF  .~.~ Including constituent trapping feature {10}
312.~.~.~ Sediment discharge means {1}
313  DF  .~.~.~.~> Valve controlled

DEFINITION

Classification: 210/312

(under subclass 299) Apparatus provided with means discharging sediment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

422+, for a closed casing filter and a variable flow controller which casing has plural outlets for flushing the casing or diverting prefilt around the filter medium.

433.1, for a filter in a casing having filtered and unfiltered passages.

533+, for a gravitational separator with a closure or valve controlled discharge.