US PATENT SUBCLASS 72 / 471
.~.~ With intermediate tool

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

462  DF  TOOL AND/OR TOOL HOLDER {7}
470  DF  .~ Including tool couple or die couple (e.g., opposed die faces) {4}
471.~.~ With intermediate tool

DEFINITION

Classification: 72/471

With intermediate tool:

(under subclass 470) Apparatus provided with at least a third tool, which the third tool is located in the space between the work-engaging faces of the two tools.

(1) Note. Exemplary patents in this subclass disclose a core supporting the interior of hollow-work* while two tools deform the exterior of the work into the shape of the core.