Propeller fan

FIG. 1 is a front, bottom and right side perspective view of a propeller fan showing our new design;

FIG. 2 is a rear and left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left view thereof;

FIG. 8 is a right view thereof; and,

FIG. 9 is an enlarged partial view of the area indicated in FIG. 4 .

The portions shown in light grey in the drawings illustrate portions of the propeller fan that form no part of the claimed design.