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Only about 12,000 were made. [108] After World War II Lambertsen called his 1940-1944 rebreather LARU (for Lambertsen Amphibious Respiratory Unit) but as of 1952 Lambertsen renamed his invention and coined the acronym SCUBA (for "self-contained underwater breathing apparatus"). During the following years this acronym was used, more and more, to ...
A scuba set is characterized by full independence from the surface during use, by providing breathing gas carried by the diver. Early attempts to reach this autonomy were made in the 18th century by the Englishman John Lethbridge, who invented and successfully built his own underwater diving machine in 1715, but though the air supply was carried in the diving apparatus, it relied on surface ...
Illustration of an occupied diving bell.. The diving bell is one of the earliest types of equipment for underwater work and exploration. [10] Its use was first described by Aristotle in the 4th century BC: "...they enable the divers to respire equally well by letting down a cauldron, for this does not fill with water, but retains the air, for it is forced straight down into the water."
Cousteau and Gagnan were issued a patent some weeks later in 1943. [9] After the war, in 1946, both men founded La Spirotechnique as a division of Air Liquide in order to mass-produce and sell their invention, this time under a new 1945 patent, and known as CG45 ("C" for Cousteau, "G" for Gagnan and "45" for 1945). This same CG45 regulator ...
Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. [1] The word scuba is an acronym for "Self-Contained Underwater Breathing Apparatus" and was coined by Christian J. Lambertsen in a patent ...
On September 6, 1915, the very first tank prototype was assembled in England and called Little Willie. Initially, the tank was far from perfect, as it kept getting its 14 tons stuck in tranches ...
The years of World War II were decisive for the history of diving. After the armistice of 1940 , the family of Simone and Jacques-Yves Cousteau took refuge in Megève , where he became a friend of the Ichac family who also lived there.
The gases were mixed in a manifold between the two tanks and the diver's mouthpiece. The manufacturer claimed success of this unit to depths of 66 feet. [2] Fleuss also invented the Fleuss vacuum pump, which was a double action Guericke type pump which delivers an almost constant suction. It uses a cylinder divided in halves: as one half of the ...