Cooling Fan

FIG. 1 is a front, right and top perspective view of a cooling fan, showing my new design;

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

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a perspective view of the design in a disassembled state;

FIG. 10 is an enlarged view of area “ 10 ” in FIG. 1 ;

FIG. 11 is an enlarged view of area “ 11 ” in FIG. 1 ;

FIG. 12 is an enlarged view of area “ 12 ” in FIG. 2 ;

FIG. 13 is an enlarged view of area “ 13 ” in FIG. 2 ;

FIG. 14 is an enlarged view of area “ 14 ” in FIG. 4 ;

FIG. 15 is an enlarged view of area “ 15 ” in FIG. 5 ;

FIG. 16 is an enlarged view of area “ 16 ” in FIG. 6 ;

FIG. 17 is an enlarged view of area “ 17 ” in FIG. 7 ;

FIG. 18 is an enlarged view of area “ 18 ” in FIG. 9 ;

FIG. 19 is an enlarged view of area “ 19 ” in FIG. 9 ;

FIG. 20 is an enlarged view of area “ 20 ” in FIG. 9 ; and,

FIG. 21 is a perspective view of the design in a using state.

The evenly spaced broken lines shown in the drawings illustrate portions of the cooling fan that form no part of the claimed design. The long-dash-short-dash broken lines surrounding portions of the cooling fan illustrate boundaries of the enlargements that form no part of the claimed design.