FIG. 1 is a perspective view of an air compressor showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is an enlarged view of the air compressor taken from the circle portion in FIG. 6;
FIG. 9 is another enlarged view of the air compressor taken from the circle portion in FIG. 6;
FIG. 10 is another enlarged view of the air compressor taken from the circle portion in FIG. 6; and,
FIG. 11 is an enlarged view of the air compressor taken from the circle portion in FIG. 3.
The broken lines shown on the drawings depict portions of the air compressor that form no part of the claimed design.