US PATENT SUBCLASS 241 / 160
.~.~.~.~.~ One surface of each couple nonrotary

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

*  DD  APPARATUS {41}
152.1  DF  .~ Series material flow only through plural comminuting zones {5}
155  DF  .~.~ All comminuting zones of cooperating surface type {3}
157  DF  .~.~.~ All comminuting zones of rotary surface type {2}
158  DF  .~.~.~.~ Circumferential or tangential material flow only {2}
160.~.~.~.~.~ One surface of each couple nonrotary

DEFINITION

Classification: 241/160

(under subclass 158) Apparatus provided with a plurality of rotary surfaces each of which cooperates with a nonrotary surface.

(1) Note. See this class, subclass 240, for devices in which a plurality of independently adjustable nonrotary surfaces cooperate with a single rotary surface. For purposes of this classification, material which is subjected to the action of a single rotary surface cooperating with a plurality of nonrotary surfaces is considered to be treated in a single comminuting zone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

142, for such devices arranged parallel or series-parallel.

221+, 237 to 243, for single comminutors of this type.