US PATENT SUBCLASS 241 / 231
.~.~.~.~.~.~ Hydraulic or pneumatic mounting and/or axially yieldable or adjustable

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}
227  DF  .~.~.~.~ Both cooperating surfaces rotate (e.g., roll mills) {4}
230  DF  .~.~.~.~.~ Adjustably or yieldably mounted rotary surface {3}
231.~.~.~.~.~.~ Hydraulic or pneumatic mounting and/or axially yieldable or adjustable

DEFINITION

Classification: 241/231

(under subclass 230) Apparatus in which (1) the adjusting or yielding means comprises hydraulic or pneumatic pressure devices and/or (2) one or both of the rotary surfaces is adjustable or yieldable in the direction of its axis of rotation.

(1) Note. Most of the devices under (2) above have surfaces which are of other than cylindrical shape. When the surface so departs from a cylinder that the material cannot be said to pass circumferentially or tangentially thereof, the device is properly classified in subclass 220.

SEE OR SEARCH CLASS

384, Bearings,

202+, for flexible, or pneumatic bearing supports.