FIG. 1 is a front elevation view of an anode shaft;

FIG. 2 is a rear view of the anode shaft shown in FIG. 1;

FIG. 3 is a top plan view of the anode shaft shown in FIG. 1;

FIG. 4 is a bottom plan view of the anode shaft shown in FIG. 1;

FIG. 5 is a right side view of the anode shaft shown in FIG. 1;

FIG. 6 is a left side view of the anode shaft shown in FIG. 1

FIG. 7 is a perspective view of the anode shaft shown in FIG. 1; and,

FIG. 8 is an enlarged perspective view of the ends of the anode shaft shown in FIG. 1.

In the drawings, the broken lines immediately adjacent the solid lines represent the boundaries of the claim; all other broken lines depict environmental subject matter only. None of the broken lines form any part of the claimed design.