US PATENT SUBCLASS 209 / 416
.~.~.~ Levelers

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

233  DF  SIFTING {16}
363  DF  .~ Elements {7}
409  DF  .~.~ Supports {7}
416.~.~.~ Levelers

DEFINITION

Classification: 209/416

(under subclass 409) Devices or structures whereby positions of sifters are automatically maintained constant relatively to a horizontal plane when the supports change positions relatively to the horizontal plane.