Patent ID: 8371780

Claim:
Rotationally drivable cutting or milling tool comprising: at least one first cutting tooth effective in a first rotational direction and at least one second cutting tooth effective in a second rotational direction opposite to the first rotational direction; wherein the at least one first cutting tooth has a first cutting edge and the at least one second cutting tooth has a second cutting edge, wherein the first cutting edge has a first orientation relative to the first rotational direction and the second cutting edge has a second orientation relative to the second rotational direction that is different from the first orientation so that the first and second cutting edges perform different machining steps in the first and second rotational directions, respectively; wherein the first and second orientations differ in that the at least one first cutting tooth has a slantedly positioned cutting surface relative to the first rotational direction and the at least one second cutting tooth has an axially oriented cutting surface relative to the second rotational direction.