US PATENT SUBCLASS 72 / 329-- .~.~.~.~ Blank detaching

US PATENT SUBCLASS 72 / 329
.~.~.~.~ Blank detaching

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	DF	.~.~ Shear-type {3}
327	DF	.~.~.~ With endless cutting edges {2}
329		.~.~.~.~ Blank detaching

DEFINITION

Classification: 72/329

Blank detaching:

(under subclass 327) Subject matter wherein the cutting edges are so arranged with respect to the deforming face of the metal-deforming tool that they are effective to separate a discrete piece (as from stock material or a rough blank) prior to deformation of said discrete piece by said tool face.

(1) Note. Substantially simultaneous engagement of work by shearing edges and metal-deforming tool faces is regarded as "blank detaching" for this subclass, for the blank is severed before any substantial amount of deformation has been performed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

330, and 337, for blank detaching by cut-off shears.

339, for precutting by severing means other than shears.

366.2, for blank detaching by endless edge shearing cutters which do not form part of a composite tool.