US PATENT SUBCLASS 241 / 293
.~.~ Cylindrical or frusto-conical (i.e., peripheral comminuting face)

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

*  DD  APPARATUS {41}
291  DF  .~ Comminuting elements {7}
293.~.~ Cylindrical or frusto-conical (i.e., peripheral comminuting face) {1}
294  DF  .~.~.~> Sectional or separable surface element {1}

DEFINITION

Classification: 241/293

(under subclass 291) Comminuting elements having a generally cylindrical or frusto-conical shape and which present a peripheral comminuting surface.

(1) Note. See the notes to subclass 291, for such elements classified elsewhere in this class on the basis of special or combined characteristics, and see the notes to the definition of subclass 221, for references to other classes employing rolls in organizations which change the dimensions of the material or its particle size.

SEE OR SEARCH THIS CLASS, SUBCLASS:

235+, 242+ and 260+, for such elements having nonsmooth

surface characteristics in cooperation with other comminuting elements.

SEE OR SEARCH CLASS

19, Textiles: Fiber Preparation, 54, for textile gin rollers.

100, Presses,

155+, for roll type conveying presses not elsewhere classified, and see especially subclass 176 for roll pairs.

451, Abrading,

541+, for cylindrical abrading elements.

492, Roll or Roller, for a roll, per se, not elsewhere provided for, and see the notes thereunder.