US PATENT SUBCLASS 209 / 220
.~.~.~.~ Vertical axis


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

*  DD  MAGNETIC {2}
213  DF  .~ Paramagnetic {9}
*  DD  .~.~ Rotating magnets {4}
219  DF  .~.~.~ Cylinder external {1}
220.~.~.~.~ Vertical axis


DEFINITION

Classification: 209/220

(under subclass 219) Devices including rotating cylinders or drums on vertical axes which attract magnetically responsive material to or toward their outer surfaces.

(1) Note. The cylinders or drums may be of the structure indicated for the cylinders or drums of the preceding subclass, and as with said preceding subclass, drums or cylinders surrounding nonrotating magnets and not themselves magnetic or magnetized are not included.