US PATENT SUBCLASS 241 / 242
.~.~.~.~ Cooperating non-smooth surface characteristics

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}
242.~.~.~.~ Cooperating non-smooth surface characteristics {1}
243  DF  .~.~.~.~.~> Intermeshing

DEFINITION

Classification: 241/242

(under subclass 221) Apparatus in which one or both of the cooperating surfaces are not smooth but are provided with cooperating grooves, channels, protuberances or the like.

SEE OR SEARCH THIS CLASS, SUBCLASS:

235+, and 260+, for surfaces provided with cooperating nonsmooth characteristics in other types of comminutors.

291+, for single comminuting elements provided with nonsmooth surfaces.