METHOD AND APPARATUS FOR REVITALIZING EXHALED AIR

摘要

The invention is a canister (10) containing one or more compounds (32, 34, 36) formed of a peroxide and/or superoxide of one or more metals of the alkali, and alkaline-earth metal groups such as KO2 and CaO2, and a moisture releasing material such as wetted activated charcoal is utilized to replenish the oxygen and absorb the carbon dioxide in exhaled air. The canister (10) may be used in a closed or semi-closed circuit breathing system worn by a user such as a fireman, miner, etc.