FIG. 1 is a perspective view of an impeller according to my design;
FIG. 2 is an additional perspective view of the impeller;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a side view thereof;
FIG. 6 is an additional side view thereof;
FIG. 7 is top view thereof;
FIG. 8 is a bottom view thereof;
FIG. 9 is a cross-sectional view of the impeller taken along the line 9-9 shown in FIG. 7; and,
FIG. 10 is a cross-sectional view of the impeller taken along the line 10-10 shown in FIG. 7.
The broken lines shown in the drawings are for the purpose of illustrating portions of the impeller that form no part of the claimed design.