US PATENT SUBCLASS 408 / 219
.~.~ Including tapered section

Current as of: June, 1999
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408 /   HD   CUTTING BY USE OF ROTATING AXIALLY MOVING TOOL

199  DF  TOOL OR TOOL WITH SUPPORT {12}
215  DF  .~ With pitch-stabilizing ridge {4}
219.~.~ Including tapered section {2}
220  DF  .~.~.~> And relieved cutting edge
221  DF  .~.~.~> Including work-embracing cutting edges

DEFINITION

Classification: 408/219

(under subclass 215) Device including a plurality of crests, each of which is part of a cutting extremity or tooth wherein the teeth are positioned along the tool-axis and wherein the crest of the teeth nearest to the leading end of the tool are disposed to lie in a cone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217+, for a tool having pitch stabilizing ridges on teeth of differing width, which teeth are disposed to lie in a cone.