Impeller for pumps

FIG. 1 is a perspective view of a first impeller for pumps showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a cross-section view taken along the line 8 - 8 of FIG. 7 thereof; and,

FIG. 9 is a cross-section view taken along the line 9 - 9 of FIG. 2 thereof.

The particular cross-hatching patterns in FIGS. 8 and 9 do not represent any particular materials.