Patent ID: 7404401

Claim:
A water respiration filter, which is comprised of: a plurality of filtration canisters threaded to an outside surface of a mask, each filtration canister being divided into a liquid filtration cavity and a solid filtration cavity separated by a partition, said liquid filtration cavity containing a predetermined amount of liquid and being equipped with a tube that allows outside air to travel into the liquid filtration cavity, said solid filtration cavity containing a solid filtration media; wherein each filtration canister further comprises: an exterior check valve placed in the tube leading to the liquid filtration cavity; an interior check valve placed in the partition between the liquid and solid filtration cavities; a plurality of inhalation holes placed on an interior surface of the solid filtration cavity to allow the filtered air to pass to an individual; an exhalation port placed on a front surface of the mask; an opening for allowing the individual to exhale into the exhalation port; a check valve installed in a body of the exhalation port; and a plurality of exhalation holes for allowing exhaled air to pass through to the outside environment.