US PATENT SUBCLASS 72 / 104
.~.~.~.~ With cooperating tool rotating in same direction

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

67  DF  BY USE OF TOOL ACTING DURING RELATIVE ROTATION BETWEEN TOOL AND WORK ABOUT INTERNAL CENTER (E.G., GYRATING OR ROTATING TOOL) {10}
80  DF  .~ During rotation of work {12}
102  DF  .~.~ Using non-cylindrical rotating tool {5}
103  DF  .~.~.~ Having helical groove {1}
104.~.~.~.~ With cooperating tool rotating in same direction

DEFINITION

Classification: 72/104

With cooperating tool rotating in same direction:

(under subclass 103) Subject matter wherein a plurality of tools*, at least one of which is helically grooved, coact to deform the same work, and wherein either (a) all the tools turn clockwise, or (b) all the tools turn counterclockwise.

(1) Note. As disclosed in the patents of this subclass, the tools surround the work and, as a result of the tools' rotation, cause the work to rotate in an opposite direction to that of the tools.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108, for a similar arrangement of tools, but wherein the tools are shaped differently from those found herein.