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Aqua-Lung [1] was the first open-circuit, self-contained underwater breathing apparatus (or "scuba") to achieve worldwide popularity and commercial success. This class of equipment is now commonly referred to as a twin-hose diving regulator , [ 2 ] or demand valve .
The "Aqua-Lung" regulator was created by Jacques-Yves Cousteau and Émile Gagnan in 1943. [5]In 1946, the company known as La Spirotechnique (now Aqua Lung International) was established by both men together with Jean Delorme, CEO of Air Liquide, as a division of Air Liquide to sell the Aqua-Lung regulators.
Swimfin from Aqualung Diving regulator Aqualung Legend (2010) Diving cylinder for 200 Bar with DIN cylinder valve from Aqualung. Aqualung Group (formerly Aqua Lung International, and prior to that La Spirotechnique) [1] is a manufacturer of self-contained breathing apparatus and other diving equipment.
July: Submarine Products launches the Aquarius Mark II single-hose regulator with adjustable neckband, exhaust deflector and the option of lightweight steel or aluminium cylinders and a convertible backpack harness to complete the scuba set. The Aquarius range now includes a wetsuit and a petrol-driven aqua scooter for surface use. [31]
A wetsuit is normally specified in terms of its thickness and style. For instance, a wetsuit with a torso thickness of 5 mm and a limb thickness of 3 mm will be described as a "5/3". With new technologies the neoprene is getting more flexible. Modern 4/3 wetsuits, for instance, may feel as flexible as a 3/2 of only a few years ago.
Eldred referred to the French model as the Gagnan Aqua Lung, as designer Émile Gagnan was the Frenchman who actually designed the device for Jacques Cousteau. This new design was superior to the Aqua-Lung, and did not violate any of the existing patents. Eldred's regulator was never patented as his business was too small for the expense.