Patent ID: 8096216

Claim:
A cutting head comprising: a central body; and at least one flexible cutting chain having a first end detachably coupled to the central body and having a second free end radially spaced from the central body, each of the at least one flexible cutting chains comprising: a plurality of linear connecting and cutting links; and a plurality of toothed connecting and cutting links; wherein the plurality of linear connecting and cutting links and the plurality of toothed connecting and cutting links are arranged so as to provide a smooth cutting edge on a first side of the cutting chain and a toothed cutting edge on a second side of the cutting chain; and wherein each of the toothed connecting and cutting links includes a ramp-shaped cutting tooth, each of the ramp-shaped cutting teeth culminating in a point and each of the points located on an end of the toothed connecting and cutting links proximate to the central body.