Conical, Four-blade, Counterclockwise Impeller

FIG. 1 is a front, top, right side perspective view of the conical, four-blade, counterclockwise impeller in accordance with the present design; FIG. 2 is a front, top, left side perspective view thereof; FIG. 3 is a front view thereof, wherein the rear, the right-side, and the left-side views are a mirror, or a duplicative, image thereof; FIG. 4 is a is a top view thereof; FIG. 5 is a bottom view thereof; and, FIG. 6 is a sectional view thereof, taken along the line shown in FIG. 2 and FIG. 5 . The broken lines in the disclosure of FIGS. 1 - 2 and 4 - 6 are understood to be for illustrative purposes of the environment and form no part of the claimed design.