Patent ID: 6234725
Filing Date: 2001-05-22
Classification: B23C,B23Q,Y10T

Abstract:
A rotary cutting tool particularly adapted for cutting plastic material comprising:a cylindrical body having a longitudinal axis and including a longitudinally extending shank having opposed ends;right-hand longitudinally extending helical flute grooving in the shank, the right-hand helical flute grooving extending continuously from one end of the shank to a first end point of the opposite end of the shank;left-hand longitudinally extending helical flute grooving in the shank, the left-hand helical flute grooving extending from one end of the shank to a second end point spaced from the first end point of the opposite end of the shank; and intersecting cutters located at intersections of the right-hand and the left-hand helical groovings.