Patent ID: 9675129
Date: 2017-06-13
CPC Classifications: A42B,A42C

Claim:
1. A helmet comprising: a shell including an outer surface and an inner surface, the shell defining a ventilation aperture passing from the outer surface of the shell to the inner surface of the shell; and a ventilation control secured to the inner surface of the shell and configured to be reversibly displaced between a first position blocking a flow of air through the ventilation aperture and a second position permitting flow of air through the ventilation aperture, the ventilation control configured to be reversibly displaced between the first position and the second position by a force applied upon an outer surface of the ventilation control opposite to the inner surface of the shell from within an internal volume of the helmet, the ventilation control including: the ventilation control configured to maintain a position in one of the first position, the second position, and an intermediate position between the first position and the second position in the absence of a force applied by a user of the helmet to the ventilation control, the ventilation control being not operable from outside of the helmet.