Patent ID: 8939683
Filing Date: 2015-01-27
Classification: F28D,F28F,H01L,H01Q,Y10T

Abstract:
1. A rotary cutting tool for forming a heat plate has a plurality of cutting blades disposed axially upon and circumferentially about a cutting tool body, said rotary cutting tool having a cutting edge profile comprising a lower radius portion and a middle convex portion, said lower radius portion having a center on a rotational axis of said rotary cutting tool, said middle convex portion defined by an inverse square curve of form Y=1/X 2 wherein said profile has values of X between 0.25 units and 4 units and wherein a vertical axis of an origin of said inverse square curve is offset from said rotational axis of said rotary cutting tool by a maximum selected value of X and a horizontal axis of said origin of said inverse square curve is offset from a tangent of said lower radius portion of said rotary cutting tool by a value of Y at said selected value of X.