US PATENT SUBCLASS 241 / 238
.~.~.~.~ With plural alternatively usable nonrotary surfaces and/or retractable rotor projections and/or adjustably or yieldably mounted rotary surface

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}
238.~.~.~.~ With plural alternatively usable nonrotary surfaces and/or retractable rotor projections and/or adjustably or yieldably mounted rotary surface

DEFINITION

Classification: 241/238

(under subclass 221) Apparatus in which (1) there is provided a plurality of nonrotary surface parts so arranged as to cooperate with the rotary surface alternatively, or (2) the rotary member is provided with parts or projections adapted to be moved relatively to other parts of the rotor or (3) the rotary member is adjustably or yieldably mounted in the frame of the apparatus or in which the apparatus is provided with a combination of all or any two of features (1), (2), or (3).

SEE OR SEARCH THIS CLASS, SUBCLASS:

102, for deformable comminuting surfaces, parts of which move relatively to other parts due to contact with the material.

230+, and the notes thereto for devices in which a rotary surface is adjustably or yieldably mounted relative to another rotary surface.

SEE OR SEARCH CLASS

222, Dispensing, 291, and 343, for feed rotors having retractable projections.