US PATENT SUBCLASS 209 / 258
.~.~ Valves

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

233  DF  SIFTING {16}
255  DF  .~ Discharging {5}
258.~.~ Valves

DEFINITION

Classification: 209/258

(under subclass 255) Means and methods including valves associated with sifters to control the discharge of material, either oversize, undersize, or both, from the sifters.