Timeline Of Diving Technology
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invention, or it may have been copied from a captured Commeinhes-type set.
1943: Jacques Cousteau and Emile Gagnan invent and make an open-circuit diving breathing set, using a demand regulator which Gagnan modified from a demand regulator used to let a petrol-driven car run on a big bag of coal-gas carried on its roof during wartime shortages of petrol. Cousteau had his first dives with it. He made two more aqualungs: there were now 3, one each for Cousteau and his first two diving companions Frdric Dumas and Taillez. His aqualung remained a secret until the south of France was liberated. This type of breathing set was later named the “Aqua-Lung”. This word is correctly a tradename that goes with the Cousteau-Gagnan patent, but in Britain it has been commonly used as a generic and spelt “aqualung” since at least the 1950s, including in the BSAC’s
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