Cutters – for shaping – Rotary cutting tool – Having peripherally spaced teeth
Reexamination Certificate
2007-10-23
2007-10-23
Fridie, Jr., Willmon (Department: 3722)
Cutters, for shaping
Rotary cutting tool
Having peripherally spaced teeth
C407S062000, C407S011000
Reexamination Certificate
active
11362685
ABSTRACT:
A rotary cutting tool comprises a body having opposite ends and a plurality of diametrally opposed pairs of flutes forming cutting edges extending helically from one end of the body toward the opposite end. All of the cutting edges are circumferentially spaced uniformly from one another at the one end of the body. Each cutting edge of one pair of edges is formed on the same and uniform helix, whereas each cutting edge of another pair of edges is formed on a uniform helix which varies from the cutting end of the body toward the opposite end. The steepness of the helices is such that no flute communicates with any other flute and, at a zone between the ends of the flutes, the cutting edges formed by such flutes again are uniformly circumferentially spaced from one another.
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Fridie Jr. Willmon
McCulloch John K.
Ultra-Tool International Incorporated
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