Life support system and rebreather

Claim 1

In a closed cycle, low pressure, life support system and rebreather, a hollow case embodying first, second and third compartments therein, flap portions for gaining access to the interior of said case, there being an air vent establishing communication between the outside atmosphere and said third compartment, a port establishing communication with the atmosphere and said second compartment, a hollow cannister mounted in said second compartment having a quantity of air purifying material therein, first and second diametrically opposed fittings connected to said cannister, one-way check valves disposed in said first and second fittings for directing flow in one direction through said cannister, a face mask removably mounted in said first compartment and said face mask closing only the nose and mouth of the user, straps connected to said face mask, a flexible bag mounted in said third compartment, a conduit connecting said bag to said cannister, a pair of flexible hoses connecting said face mask to said first and second fittings, said case defining and providing a back pack to be mounted and worn on the back of a user, an oXygen container arranged in one of said compartments, a manually operable means for selectively actuating the oxygen container to release oxygen therein, and a conduit connecting said oxygen container to said cannister.