US PATENT SUBCLASS 72 / 389.2
.~.~.~ For a small radius bend

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

380  DF  BY RELATIVELY MOVABLE OFFSET TOOL-FACES (E.G., FOR BENDING OR DRAWING) {4}
386  DF  .~ With tool motion in fixed path {3}
389.1  DF  .~.~ Between and co-planar with opposed tools {8}
389.2.~.~.~ For a small radius bend {1}
389.3  DF  .~.~.~.~> Elongated knife edge die (i.e., press brake) {1}

DEFINITION

Classification: 72/389.2

For a small radius bend:

(under subclass 389.1) Device particularly adapted to deform a workpiece such that the radius of curvature on the inside surface of the workpiece approaches zero.