US PATENT SUBCLASS 408 / 82
.~.~.~.~ Engaging surface axially advanced of tool-action


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

72 R  DF  WITH WORK-ENGAGING STRUCTURE OTHER THAN TOOL OR TOOL-SUPPORT {13}
79  DF  .~ Frictionally engaging sides of opening in work {1}
80  DF  .~.~ Opening coaxial with tool {2}
81  DF  .~.~.~ Engaging sides of opening being enlarged by tool {2}
82.~.~.~.~ Engaging surface axially advanced of tool-action


DEFINITION

Classification: 408/82

(under subclass 81) Device wherein the work-contacting structure is adapted to contact the wall of the passageway at a point that will be later subjected to the cutting action if the tool is allowed to continue to progress.