US PATENT SUBCLASS 407 / 57
.~.~ Axially tapering tool

Current as of: June, 1999
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407 /   HD   CUTTERS, FOR SHAPING

30  DF  ROTARY CUTTING TOOL {6}
56  DF  .~ Having peripherally spaced teeth {4}
57.~.~ Axially tapering tool

DEFINITION

Classification: 407/57

Axially tapering tool:

(under subclass 56) Device wherein the protuberances extend axially along the device and are constructed such that the cutting edges progressively reach a greater radial distance from the axis at one end of the device than at the other.