US PATENT SUBCLASS 241 / 253
.~.~.~.~.~.~ Vertical axis

Current as of: June, 1999
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241 /   HD   SOLID MATERIAL COMMINUTION OR DISINTEGRATION

*  DD  APPARATUS {41}
198.1  DF  .~ Cooperating comminuting surfaces (e.g., jaw crusher) {5}
220  DF  .~.~ Rotary surface (or surfaces) {2}
244  DF  .~.~.~ Axial or radial flow of material (e.g., disc mill, or cone and shell mill) {6}
250  DF  .~.~.~.~ With moving cooperating surface {1}
251  DF  .~.~.~.~.~ Both cooperating surfaces rotate {2}
253.~.~.~.~.~.~ Vertical axis

DEFINITION

Classification: 241/253

(under subclass 251) Devices in which the rotary motion of both surfaces is about a vertical axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

257.1, for devices in which a single surface rotates relative to another about a vertical axis.