US PATENT SUBCLASS 408 / 204
.~ Having axial, core-receiving central portion

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


408 /   HD   CUTTING BY USE OF ROTATING AXIALLY MOVING TOOL

199  DF  TOOL OR TOOL WITH SUPPORT {12}
204.~ Having axial, core-receiving central portion {2}
205  DF  .~.~> With lateral outlet
206  DF  .~.~> And having stepped cutting edges

DEFINITION

Classification: 408/204

(under subclass 199) Device having a forwardly projecting cutting end portion which delimits a longitudinally extending opening or groove coaxial with the tool-axis and having a diameter smaller than that of the cylinder of revolution generated by the rotating cutting end portion of the tool whereby a center section of work is undisturbed during operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

703, for a digest of structure peculiar to the operation of the tool of this subclass.