US PATENT SUBCLASS 72 / 82
.~.~ Caused by work-holding, shape-imparting form (e.g., for "spinning")


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}
82.~.~ Caused by work-holding, shape-imparting form (e.g., for "spinning") {1}
83  DF  .~.~.~> With means causing cooperating presser member to traverse form surface


DEFINITION

Classification: 72/82

Caused by work-holding, shape-imparting form (e.g., for "spinning"):

(under subclass 80) Subject matter wherein a member turns about an axis concentric (i.e., coincidental) with the work axis, which member has a profile, taken in cross section through the axis, corresponding to a cross-sectional profile of the product to be made, and the work* is disclosed as fixed to the member by a positively acting clamp to turn therewith at the same velocity, so that a tool can engage the work and deform successively presented portions thereof into contact with the profile of the member during turning of the work.

(1) Note. The operation described is generally known in the art as "spinning". See the Figure accompanying this note for an illustration of the operation. However, the term "spinning" in a patent is not sufficient basis for placing such a patent in this subclass (82). [figure] [caption]The blank 1, an intermediate stage 2, and the product, 3, of a "Spinning" operation

SEE OR SEARCH THIS CLASS, SUBCLASS:

115, for a disclosure wherein the member is stationary and cooperates with an orbiting or rotating tool.