Protective Helmet

FIG. 1 . 1 is a front perspective view of a protective helmet showing my new design;

FIG. 1 . 2 is a rear perspective view thereof;

FIG. 1 . 3 is a front view thereof;

FIG. 1 . 4 is a left side view thereof;

FIG. 1 . 5 is a rear view thereof;

FIG. 1 . 6 is a top view thereof;

FIG. 1 . 7 is a bottom view thereof, and

FIG. 1 . 8 is a right side view thereof.

Portions of the protective helmet shown in broken lines form no part of the claimed design.