US PATENT SUBCLASS 83 / 688
.~.~.~.~ Plural spaced successively operative shearing portions

Current as of: June, 1999
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83 /   HD   CUTTING

651  DF  TOOL OR TOOL WITH SUPPORT {12}
679  DF  .~ Cutting couple type {9}
684  DF  .~.~ Punching tool {4}
686  DF  .~.~.~ Shear-type male tool {3}
688.~.~.~.~ Plural spaced successively operative shearing portions

DEFINITION

Classification: 83/688

(under subclass 686) Device, wherein the tool has at least two portions thereon effective to cut the work by a shearing action, as defined in the Glossary, said portions being connected by a portion of the tool which is not effective to cut the work, one of said work cutting portions engaging the work before the other portion.

SEE OR SEARCH CLASS

407, Cutters, for Shaping,

13+, for a broaching tool having a series of teeth that successively cut to enlarge an existing hole.