US PATENT SUBCLASS 241 / 89.2
.~.~.~.~ Removable or interchangeable screen or screen portion


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

*  DD  APPARATUS {41}
83  DF  .~ Comminuting surface provided with openings to permit discharge of material {4}
84  DF  .~.~ Cooperates with moving comminuting surface or member {6}
86  DF  .~.~.~ Cooperates with rotary comminuting member {10}
89.2.~.~.~.~ Removable or interchangeable screen or screen portion


DEFINITION

Classification: 241/89.2

(under subclass 86) Apparatus wherein the perforated surface or parts thereof can be completely separated from the apparatus or the perforated surface is moved so a different part of said surface is in the comminuting zone.