US PATENT SUBCLASS 209 / 338
.~.~.~.~.~.~.~ With impact

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

233  DF  SIFTING {16}
*  DD  .~ Plane sifters {2}
*  DD  .~.~ Horizontal and inclined {4}
*  DD  .~.~.~ Reciprocating {6}
*  DD  .~.~.~.~ With horizontal shake {3}
333  DF  .~.~.~.~.~ Lateral {4}
337  DF  .~.~.~.~.~.~ Sliding {1}
338.~.~.~.~.~.~.~ With impact

DEFINITION

Classification: 209/338

(under subclass 337) Flat horizontal or inclined sifters, the shake being produced by impact or being modified by a jar or bump at some stage.