US PATENT SUBCLASS 72 / 83
.~.~.~ With means causing cooperating presser member to traverse form surface

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

DEFINITION

Classification: 72/83

With means causing cooperating presser member to traverse form surface:

(under subclass 82) Subject matter wherein the tool co-acts at any particular instant of time with a portion of the face of the turnable member and said tool is moved (a) relative to a point on the axis of said member and (b) along the face of the member.

(1) Note. This subclass (83) and subclass (85) below are the loci of patents disclosing generally similar concepts, but specifically different structure. In both subclasses a workpiece rotates together with a form or member, and a cooperating presser or tool deforms a continuous succession of circumferential portions of the work. As the tool traverses the work, it deforms a different succession of work portions during each 360 deg. rotation of the work. However, in this subclass (83) the claimed disclosure includes means for, or a step of, holding of the work to the form, whereas in subclass 85 the traversing of the tool is emphasized.