Protective helmet

Description

1. Protective helmet

1.1 : Perspective

1.2 : Front

1.3 : Back

1.4 : Left

1.5 : Right

1.6 : Top

1.7 : Bottom

the design shows a protective helmet to which a face shield can be fitted; the part represented in solid lines is part of the claimed design; the dotted broken lines show the part of the band that can be removed from the helmet and the fitting for the connection of a hose which form not part of the claimed design.

Claims

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