Patent ID: 6904618

Claim:
A helmet for sporting activities, comprising: (a) a protective shell having a front portion and a rear portion; (b) a plurality of vents formed through said protective shell, comprising at least one intake vent in the front portion of the protection shell and at least one exhaust vent in the rear portion of the protective shell; (c) a moveable shutter plate rotatably mounted adjacent said protective shell about a central axis extending through said protective shell, said shutter plate having a plurality of apertures formed therethrough, at least some of said plurality of apertures conforming in dimension and position to said at least one intake vent and said at least one exhaust vent so that said apertures are in substantial registration with said vents when said shutter plate is in a first position; and (d) said shutter plate being selectively moveable between said first position and a second position, wherein the vents are at least partially closed by said shutter plate.