US Patent 7574754 Helmet

This invention is to obtain a targeted traveling-window channeling-off function irrelevant to respective intrinsic driving postures of a helmet wearer, a speed of vehicles and the like. Helmets A, B, C include straightening members which relate to the holding of the stability of the helmets during traveling. The straightening members are provided in a state that a position of the straightening members is adjustable in a fore-and-aft direction or an angle of straightening surfaces which face a traveling window in an opposed manner is adjustable corresponding to various intrinsic driving postures of a helmet wearer and a speed of vehicles.