US PATENT SUBCLASS 72 / 113
.~.~ Comprising transverse-axis roller inside hollow work

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}
112  DF  .~ Tool orbiting or rotating about an axis {8}
113.~.~ Comprising transverse-axis roller inside hollow work

DEFINITION

Classification: 72/113

Comprising transverse axis roller inside hollow work:

(under subclass 112) Subject matter wherein the tool is a roller* rotatable about its axis and is brought into engagement with the interior surface of hollow work* during deformation of the work, and wherein the roller axis lies across the length dimension of the hollow work.

(1) Note. Patents placed herein disclose the work to be, for example, a tube or pipe and the deforming tool to be a roller therein, the roller and the work being moved relative to each other in a direction having a component simultaneously parallel to the centerline of the work and perpendicular to the roller axis. The deforming action is similar to that found in subclasses 199+, below, but the patents are placed here because the axis of rotation of the roller passes through the work.