US PATENT SUBCLASS 72 / 326
.~.~ Shear-type


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

324  DF  WITH CUTTING {5}
325  DF  .~ By composite tool (e.g., piercing) {1}
326.~.~ Shear-type {3}
327  DF  .~.~.~> With endless cutting edges {2}
330  DF  .~.~.~> Blank detaching
331  DF  .~.~.~> Severing (e.g., subdividing)


DEFINITION

Classification: 72/326

Shear-type:

(under subclass 325) Subject matter wherein said edged element and a coacting element having a generally conforming edge are arranged to engage opposite sides of work and to approach each other, with the edge on one element moving past, and in close and overlapping relationship to, the edge of the coacting element.

(1) Note. A cutting tool couple must cut completely through work in the direction of tool advance to be regarded as a shear-type cutter for this or indented subclasses; no material need be detached, e.g., slitting or fringing is frequently done by shearing cutters.

SEE OR SEARCH THIS CLASS, SUBCLASS:

332+, for the general combination of a shearing tool couple with a metal-deforming device or for method involving such cutting and metal deformation.