US PATENT SUBCLASS 241 / 259.2
.~.~.~.~.~ By fluid

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}
259.1  DF  .~.~.~.~ With means vary space between surfaces {2}
259.2.~.~.~.~.~ By fluid

DEFINITION

Classification: 241/259.2

Apparatus under 259.1 wherein the means to vary the distance between the surfaces includes hydraulic or pneumatic pressure.