US PATENT SUBCLASS 209 / 687
.~.~.~.~ On interior of hollow drumlike body (e.g., tube, etc.) rotatable about longitudinal axis thereof

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

509  DF  SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS {11}
606  DF  .~ Separating means {33}
659  DF  .~.~ Sorting items by size {3}
684  DF  .~.~.~ Item of particular size or shape enters pocket {3}
687.~.~.~.~ On interior of hollow drumlike body (e.g., tube, etc.) rotatable about longitudinal axis thereof

DEFINITION

Classification: 209/687

On interior of hollow drumlike body (e.g., tube, etc.) rotatable about longitudinal axis thereof:

(under subclass 684) Methods and apparatus wherein said pocket is on the interior of a hollow drumlike body rotatable about its longitudinal axis.