FIG. 1 is a front perspective view of an air compressor, showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a right side view thereof; a let side view is a mirror image of the right side view, and thus omitted.
The portions shown in broken lines in FIGS. 1-6 are for illustrative purposes only and form no part of the claimed design. The bottom view is flat and non-ornamented, and thus omitted.