US PATENT SUBCLASS 209 / 489
.~.~.~ Automatic control

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

422  DF  STRATIFIERS {6}
484  DF  .~ Elements {9}
488  DF  .~.~ Feeding and discharging {1}
489.~.~.~ Automatic control

DEFINITION

Classification: 209/489

(under subclass 488) Devices for both feeding and discharging stratifiers which are adapted to automatically control both the feed and the discharge, the feeding and discharging elements being generally so interrelated that when one is interrupted the other is set into operation.