US PATENT SUBCLASS 408 / 189
.~ Tool having stepped cutting edges

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

186  DF  TOOL-SUPPORT WITH MEANS TO PERMIT POSITIONING OF THE TOOL RELATIVE TO SUPPORT {5}
189.~ Tool having stepped cutting edges {3}
190  DF  .~.~> Including means to permit both radial and axial positioning of edge
191  DF  .~.~> Including means to permit relative axial positioning of edges {2}
194  DF  .~.~> Including inverse cutting edge

DEFINITION

Classification: 408/189

(under subclass 186) Device including a plurality of cutting edges disposed about the tool-axis and positioned at different radial distances from the tool-axis.

(1) Note. This subclass is not intended to include a reamer having a section wherein the cutting edge(s) is in a cylinder parallel with the tool-axis and a tapered lead section wherein the cutting edge(s) lie in a cone concentric with the tool-axis because it cannot be said that the cutting edges are different radial distances from the tool-axis.

(2) Note. Included herein is a tool having a cutting edge(s) in a first cone concentric with the tool-axis and a cutting edge(s) in a second cone also concentric with the tool-axis, even if the cutting edges meet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

206, for a tool having stepped cutting edges and a core receiving central portion.

223+, for a tool, per se, having stepped cutting edges.