US PATENT SUBCLASS 241 / 83
.~ Comminuting surface provided with openings to permit discharge of material

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

*  DD  APPARATUS {41}
83.~ Comminuting surface provided with openings to permit discharge of material {4}
84  DF  .~.~> Cooperates with moving comminuting surface or member {6}
91  DF  .~.~> Rotating comminuting surface having openings {2}
94  DF  .~.~> Reciprocal comminuting surface having openings
95  DF  .~.~> Stationary comminuting surface having openings

DEFINITION

Classification: 241/83

(under the class definition) Apparatus in which at least a portion of the comminuting surface which is presented to the material to effect the comminution is provided with openings through the surface to permit the passage of sufficiently comminuted material therethrough to discharge it from the comminuting zone.

(1) Note. This group is meant to include only the surfaces which present completely bounded openings for the passage of material. Mere intermeshing comminuting surface characteristics are not included and are classified with the various types of comminutors below.

(2) Note. Patents directed to the subcombination of the apertured surface, per se, have been classified in this group on the basis of the disclosed combination.

(3) Note. See (2) Note to the definition of subclass 68.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for comminutors provided with comminuting surfaces having openings to which material is borne by a gas current. 69+, for devices which permit the discharge of comminuted material during the comminuting operation, but in which the screen has no comminuting function.

SEE OR SEARCH CLASS

100, Presses,

104+, for presses not elsewhere classified having drain means for expressed liquid.

209, Classifying, Separating, and Assorting Solids,

233+, 674, 675+, and 680+, for screens, sifters, and apertured members designed for the separation of solids into grades, but having no disclosed comminuting function.

210, Liquid Purification of Separation,

483+, particularly subclasses 498 and 499, for filter plates or screens.