US PATENT SUBCLASS 241 / 228
.~.~.~.~.~ Internal comminuting surface

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}
221  DF  .~.~.~ Circumferential or tangential flow of material (e.g., roll mills or roll and concave mills) {7}
227  DF  .~.~.~.~ Both cooperating surfaces rotate (e.g., roll mills) {4}
228.~.~.~.~.~ Internal comminuting surface

DEFINITION

Classification: 241/228

(under subclass 227) Apparatus in which one of the cooperating rotary members presents an internal annular comminuting surface to the other rotary surface for cooperation therewith.

SEE OR SEARCH THIS CLASS, SUBCLASS:

117+, for similar devices in which a plurality of rotary members cooperates with an internal comminuting surface especially subclass 122 for devices having an internal rotary comminuting surface.

170+, for rotary members cooperating with internal comminuting surfaces in which the rotary member is loosely mounted.

252, for devices of similar structure, but in which the flow of material is in a generally axial direction, rather than circumferential.