US PATENT SUBCLASS 241 / 224
.~.~.~.~.~ Hopper

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}
222  DF  .~.~.~.~ With material feed and/or discharge mechanism or control {2}
224.~.~.~.~.~ Hopper {1}
225  DF  .~.~.~.~.~.~> With roll or rotary material agitator

DEFINITION

Classification: 241/224

(under subclass 222) Apparatus in which the feed mechanism operates in conjunction with a hopper to feed the material to the comminuting zone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

248+, for hopper feeders operating in conjunction with other types of comminutors.