Portable air compressor

FIG. 1 is a top, front, right-side perspective view of a portable air compressor;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dot-dashed broken separation lines disclaim the length of the portable air compressor. The separation lines and portion between the separation lines form no part of the claim design. The dashed broken lines depict portions of the portable air compressor that form no part of the claimed design.