Protective helmet

Description

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

FIG. 2 is a front elevation view of the protective helmet of FIG. 1;

FIG. 3 is a rear elevation view of the protective helmet of FIG. 1;

FIG. 4 is a right side elevation view of the protective helmet of FIG. 1;

FIG. 5 is a left side elevation view of the protective helmet of FIG. 1;

FIG. 6 is a top plan view of the protective helmet of FIG. 1; and,

FIG. 7 is a bottom plan view of the protective helmet of FIG. 1.

The broken lines shown in the drawings represent portions of the protective helmet that form no part of the claimed design.

Claims

The ornamental design for a protective helmet, as shown and described.