Disk blade

FIG. 1 is a front, perspective view of a disk blade shown according to the present design;

FIG. 2 is a rear, perspective view thereof;

FIG. 3 . is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side elevational view thereof; and,

FIG. 6 is a cross-sectional view thereof taken along line 6 - 6 in FIG. 3 .

The broken line representations in the figures show unclaimed environment or boundaries. The broken line representations thus form no part of the claimed design as filed.