US PATENT SUBCLASS 241 / 199
.~.~ Batch type (e.g., mortar and pestle)

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}
199.~.~ Batch type (e.g., mortar and pestle) {2}
199.1  DF  .~.~.~> With means to move batch container or support {2}
199.9  DF  .~.~.~> Stationary container or support {2}

DEFINITION

Classification: 241/199

(under subclass 198.1) Apparatus in which the material is treated in batches rather than as a stream passing through the comminuting zone.

(1) Note. Included in this subclass will be found a number of patents directed to devices for forming dental amalgam. In some of these devices the function appears to be purely one of mixing, but in view of their similarity to mortars and pestles used for comminution these patents have been classified here even though there is no mention of a comminuting function.