US PATENT SUBCLASS 241 / 89.3
.~.~.~.~ Stationary concave surface


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}
89.3.~.~.~.~ Stationary concave surface


DEFINITION

Classification: 241/89.3

(under subclass 86) Apparatus wherein the stationary comminuting surface is an interior curved surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

273.1, for a stationary curved surface provided with a plurality of points or punched out barbs, but not discharge openings.