FIG. 1 is a front view of the sharpener.
FIG. 2 is a front side perspective view thereof, wherein the other front side perspective view would be a mirror image of that shown;
FIG. 3 is a rear view thereof;
FIG. 4 is an exploded right side view thereof with the cap removed;
FIG. 5 is a rear side perspective view thereof, the other rear side perspective view being a mirror image of that shown; and,
FIG. 6 is another rear side perspective view, rotated about 135° from that shown in FIG. 5.
The dash-dot lines represent the bounds of the claimed design, while all other broken lines are directed to environment and are for illustrative purposes only; the dash-dot lines and the broken lines form no part of the claimed design.