Patent ID: 8015625

Claim:
A helmet comprising: a shell adapted to fit on a user's head; first and second retention members coupled to the shell and movable with respect to each other to adjust a size of the helmet; and an adjustment mechanism coupled to the retention members, the adjustment mechanism comprising: an actuating member coupled to at least one of the retention members and movable in two directions to move at least one of the retention members relative to the other; a clutch mechanism coupled to the actuating member and including at least one locking member that inhibits movement of the actuating member in both of the two directions, wherein the at least one locking member is movable between a locked position, where the actuating member is substantially prevented from moving, and an unlocked position, where the actuating member is not substantially prevented from moving; and a release mechanism adapted to move the at least one locking member from the locked position to the unlocked position to allow movement of the actuating member, wherein the adjustment mechanism provides a ratcheting detent when moving the actuating member.