Aqualung

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Who invented Aqualung?

•  Jacques-Yves Cousteau and Emile Gagnan invented the Aqualung in 1943.

When was the Aqualung invented?

•  1943

When was the patent granted on the Aqualung?

•  Both Jacques-Yves Cousteau and Emile Gagnan granted a joint patent for aqualung in 1944.

Who was the patent granted to on the Aqualung?

•  Jacques-Yves Cousteau and Emile Gagnan

What is Aqualung?

• Aqualung was the first trademark device self-contained underwater breathing equipment. The components include to make up the aqualung device are the air cylinders, the regulator and the harness.
• Cylinders are manufactured with steel or aluminum alloy and they are found in multiple capacities.
• For diver’s air is applied through the cylinders placed on the back of the diver’s. Air present in the cylinder at high pressure can be reduced before the diver breathes it.
• For this purpose regulator is attached to the cylinder to adjust the pressure levels of air in the cylinder to the same pressure as the surrounding water.
• Regulators are classified in to two types. They are: twin hose regulator and single hose regulator.
• Twin-hose Regulator: Twin hose regulators are the first type of regulators developed but they are out-dated by single-hose regulators.
• Single hose Regulator: Single hose regulators contain a cylinder valve connected to the hose and it is held in the diver’s mouth by a soft rubber mouthpiece.
• Harness is used for carrying aqualung on the diver’s back.
• Aqualung uses open circuit technology to receive clean air and expel used air. Closed-circuit technology is used to recycle the expelled air via a chamber that removes carbon dioxide and return oxygen for breathing.