US Patent 7914472 Neck support

A neck support/brace for protecting a neck has a flexible collar with a top wall, bottom wall, sidewalls and sectional walls disposed therebetween that form compartments therein. A plurality of cells are disposed within the compartment. Each of the fluid cells have a valve element disposed therein. When the pressure acting upon the cells is below a threshold pressure, fluid or air flows through the valve element to allow movement of the neck. Alternatively when the pressure on the cells is above the threshold pressure the valve element closes preventing fluid or air flow out of the fluid cell thus causing the cell to stay inflated and provide resistance to a neck movement.