US PATENT SUBCLASS 241 / 170
.~ Loose grinding body comminutor (e.g., ball or rod mills)

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

*  DD  APPARATUS {41}
170.~ Loose grinding body comminutor (e.g., ball or rod mills) {6}
171  DF  .~.~> With feed and/or discharge
172  DF  .~.~> With independent means moving or guiding the material and/or grinding bodies in receptacle {1}
175  DF  .~.~> Compound movement receptacle
176  DF  .~.~> Rotating receptacle {2}
179  DF  .~.~> Receptacle structure {3}
184  DF  .~.~> Grinding bodies

DEFINITION

Classification: 241/170

(under the class definition) Apparatus in which the comminution is effected by a loose comminuting body or bodies. These devices are mostly of the type commonly called ball or rod mills in which loose balls or rods are tumbled with the material within a moving receptacle.

(1) Note. By the term "loose" as used above is meant the body or bodies are not restricted in their movement to any particular direction. Devices in which the body or bodies are mounted so as to be free to reciprocate, rotate or oscillate in restricted paths will be found in other appropriate subclasses of this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

54, for the defined devices provided with gas supply means.

70+, for the defined devices provided with discharge permitting screens.

83+, for such comminutors provided with perforated receptacle. 103+, for comminutors employing balls or rolls supported on frictional drive surfaces (ball chasers), also see subclasses 173+, below.

137, and 153, for plural loose grinding body comminutors. Partitioned receptacles were considered to be plural devices where the partition was sufficiently extensive to create distinct comminuting zones.

284, for comminutors in which material (without the use of loose bodies) is tumbled within a moving receptacle to effect the comminution.

SEE OR SEARCH CLASS

99, Foods and Beverages: Apparatus,

600, for grain hullers employing loose abrading material.

451, Abrading,

326+, for a device adapted to tumble objects or articles in order to remove unwanted coatings, etc. Such a device often includes loose bodies to assist in the abrading operation.