US PATENT SUBCLASS 72 / 355.2-- .~.~.~.~ Coaxial opposed tools

US PATENT SUBCLASS 72 / 355.2
.~.~.~.~ Coaxial opposed tools

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

343	DF	BY USE OF CLOSED-DIE AND COACTING WORK-FORCER (E.G., PUSH-DRAWING) {3}
352	DF	.~ Forcing work into or within closed die; e.g., forging {6}
353.2	DF	.~.~ By two or more coacting tools movable relative to closed die; e.g., tool complex {3}
354.6	DF	.~.~.~ One tool telescoping into closed die {2}
355.2		.~.~.~.~ Coaxial opposed tools {2}
355.4	DF	.~.~.~.~.~> Passing through work; e.g., punch
355.6	DF	.~.~.~.~.~> Both tools telescoping into closed die

DEFINITION

Classification: 72/355.2

Coaxial opposed tools:

(under subclass 354.6) Subject matter wherein the first and second deforming instrumentalities are spaced from each other along a line and move parallel to that line, toward each other, and with respect to the closed die to effect the deforming operation on a workpiece therebetween.

(1) Note. An ejector rod (knockout rod) or similar element which may lie in contact with work during a deforming operation but which has no independent motion until it is actuated to expel a formed product from a tool after the operation is completed, should be distinguished from a "first" or "second" instrumentality.