Paragraph Number

64

Referring to FIGS. 11-12, the aperture width 122 may be a percentage of the cutting tooth height 124. The percentage of the aperture width 122 in relation to the cutting tooth height 124 may be 70% to 115%. In some embodiments, the percentage may be 75% ± 5%, 80% ± 5%, 85% ± 5%, 90% ± 5%, 95% ± 5%, 100% ± 5%, 105% ± 5%, 110% ± 5%, or any other range within 70% to 115%. The aperture height 126 may be greater than a cutting tooth width 128. In one embodiment, the aperture 120 has a rectangular shape. In the illustrated embodiment, the aperture 120 has two parallel sides that are connected by an arcuate side. The aperture 120 includes an open side that is in communication with the cutting edge 132. Alternatively, or in addition, the aperture 120 may include be straight instead of arcuate as depicted in FIG. 11. In certain embodiments, the aperture 120 is considered adjacent to the cutting tooth 130.

Added by DJM 9 2021