US PATENT SUBCLASS 72 / 249
.~.~ With means to drive tool

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

199  DF  BY USE OF ROLLER OR ROLLER-LIKE TOOL-ELEMENT {17}
237  DF  .~ With carrier for roller-couple or tool-couple {9}
249.~.~ With means to drive tool

DEFINITION

Classification: 72/249

With means to drive tool:

(under subclass 237) Subject matter which, as claimed, includes means to apply driving force (i.e., torque) to the roller(s) tending to turn the roller(s) about the axis (or axes) thereof.