Patent ID: 7472464

Claim:
A milling head for a rotary milling tool and having a central rotational axis, comprising: a body having an upper tool mounting portion adapted to be connected to a rotary milling tool, wherein the body has a tube bore adapted to accept a portion of a tube, and one or more milling elements adapted to mill a heat dissipating element on the tube, wherein the one or more milling elements are each connected to a respective milling element support of the body, wherein the one or more milling elements each have a lowermost first cutting edge and a second cutting edge meeting at a tip located at a lowermost, radially innermost portion of the respective milling element, and wherein an angle between the first cutting edge and the second cutting edge is less than 60°, and wherein an angle between the first cutting edge and a line extending through the tip perpendicular to the central rotational axis of the milling head is from about 15° to about 75°.