Protective Cap

FIG. 1 is a back, right, and above perspective view of a protective cap; FIG. 2 is a front, left, and above perspective view thereof; FIG. 3 a bottom plan view thereof; FIG. 4 a top plan view thereof FIG. 5 is a left side elevation view thereof; FIG. 6 is a right side elevation thereof; FIG. 7 is a back elevation view thereof; and, FIG. 8 is a front elevation view thereof. The broken lines in the drawings illustrate portions of the protective cap and form no part of the claimed design.