US PATENT SUBCLASS 241 / 121
.~.~.~ Plural surfaces forcible away from common surface

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

*  DD  APPARATUS {41}
107  DF  .~ Plural rotary or oscillatory surfaces cooperate with common surface (e.g., chasing mills) {9}
117  DF  .~.~ Common surface moves during comminution {4}
121.~.~.~ Plural surfaces forcible away from common surface {1}
122  DF  .~.~.~.~> Common surface rotates on horizontal axis

DEFINITION

Classification: 241/121

(under subclass 117) Apparatus in which the plural surfaces are so mounted as to be forcible away from the common surface by the material under abnormal conditions.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127+, for devices embodying plural surfaces having planetary motion which are forcible away from the common surface.

230+, and 238, for yieldably mounted single rotary surfaces.