Woodworking – Process – Mechanical cutting or shaping
Patent
1997-07-18
1999-05-04
Bray, W. Donald
Woodworking
Process
Mechanical cutting or shaping
1441352, 144137, 144228, 144241, 1442532, 1442535, B27M 100
Patent
active
058992529
ABSTRACT:
A router bit and method for cutting predetermined configurations in a workpiece. The router bit includes a body portion having an axis of rotation, a radial extent about the axis, and a longitudinal extent, and a shank member includes a shank to be retained in the rotating machine, with the shank extending along the axis and being formed integrally with the body. A first pair of cutter elements are mounted on the body diametrically opposed to each other, and each of the first pair of cutter elements has a cutting edge which extends generally radially. A second pair of cutter elements is mounted on the body in generally diametrically opposed relation to each other and circumferentially spaced from the first pair of cutter elements, and each of the second pair of cutter elements has a cutting edge extending generally longitudinally. The first pair of cutter elements each have a hook angle and a positive shear angle, and the second pair of cutter elements each have a hook angle and shear angle in a range from zero to negative.
REFERENCES:
patent: 1748767 (1930-02-01), Heston et al.
patent: 4844135 (1989-07-01), Witt
patent: 5615918 (1997-04-01), Venditto
Freud USA, Inc. General Products Catalog, "Straight, Spiral, & Trim Bits", 1996, p. 55.
Freud USA, Inc. Shaper Cutter Catalog, "Raised Panel Cutters", p. 70.
Bray W. Donald
Freud USA, Inc.
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