Patent ID: 7972094

Claim:
A cutting head having a cutting head longitudinal axis defining forward and rearward directions, the cutting head comprising: a cap portion comprising a plurality of spaced-apart head segments, each head segment comprising: a head top surface; a head base surface; a rotationally leading portion connected to the head top surface, the rotationally leading portion including a cutting edge and generally facing a direction of rotation about the longitudinal axis; a rotationally trailing portion connected to the head top surface, the rotationally trailing portion including a head step wall which is connected to a trailing portion of said head top surface and extends in a rearward direction of the cutting head; and a locking member extending in a direction opposite to said direction of rotation, each locking member comprising: a first wall connected to a lower portion of said head step wall and principally extending in a direction opposite to said direction of rotation; a second wall connected to a trailing end of said first wall and principally extending in a rearward direction of the cutting head; and a third wall connected to a lower portion of said second wall and principally extending in said direction of rotation; and a tail portion joined to the cap portion and extending in a rearward direction of the cutting head to a tail portion bottom surface, the tail portion comprising: a plurality of circumferentially spaced apart tail fixation surfaces, each tail fixation surface extending at least partially along the cutting head longitudinal axis; and an elongated tail fixation recess between adjacent tail fixation surfaces, the elongated tail fixation recess having a radially outermost contour which is radially inward of the tail fixation surfaces; wherein: the first wall is not configured as an axial abutment surface; the second wall is configured as a circumferential abutment surface; and the third wall is configured as an axial abutment surface.