US PATENT SUBCLASS 407 / 63
.~.~.~.~ Helical tooth

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}
61  DF  .~.~ Specified tooth shape or spacing {1}
62  DF  .~.~.~ Arcuate cutting edge {1}
63.~.~.~.~ Helical tooth

DEFINITION

Classification: 407/63

Helical tooth:

(under subclass 62) Device wherein the arcuate shape of the cutting edge is the shape of a helix or screw thread generated along the device.