US PATENT SUBCLASS 72 / 102
.~.~ Using non-cylindrical rotating tool

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.~.~ Using non-cylindrical rotating tool {5}
103  DF  .~.~.~> Having helical groove {1}
105  DF  .~.~.~> And cooperating, complementary tool {1}
107  DF  .~.~.~> Included in roller-cluster
108  DF  .~.~.~> With cooperating tool rotating in same direction
109  DF  .~.~.~> Including in tool-couple

DEFINITION

Classification: 72/102

Using noncylindrical rotating tool:

(under subclass 80) Subject matter including a tool mounted to turn about an axis during metal deformation, the work-engaging surface of said tool being of a configuration that is other than a right circular cylinder.

(1) Note. For the purpose of this definition, a right circular cylinder is formed by rotating a straight line about an axis that is parallel to the line. For placement in this or indented subclasses, a patent must claim a rotating tool

having a surface that is significantly not a right circular cylinder. Examples of such configuration include: a cone, a helical (i.e., screwlike) groove, a barrel, and an hour-glass, among others.