Spiral flute tap

Details Spiral flute tap Spiral flute tap

2011-05-31

2011-05-31

Gates, Eric A (Department: 3726)

Cutting by use of rotating axially moving tool

Tool or tool with support

With pitch-stabilizing ridge

C408S224000, C408S230000

Reexamination Certificate

active

07950880

ABSTRACT:
A cutting tool that includes an elongate body that has a forward end and a rearward end. The elongate body has a fluted portion that beginning near and extends in a rearward direction from the forward end. The fluted portion has a flute that defines a cutting edge. The flute presents a concave cutting face wherein the concave cutting face is defined by a first radius. The flute further presents a concave core surface adjacent to the concave cutting face wherein the concave core surface is defined by a second radius. The flute presents a convex heel surface adjacent to the concave core surface wherein the convex heel surface is defined by a fourth radius.

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