Information AboutAqua-lung |
| CATEGORIES ABOUT AQUA-LUNG | |
| diving equipment | |
| diving engineering | |
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Aqua-lung was the original name for the first open-circuit SCUBA diving equipment, developed by Emile Gagnan and Jacques Cousteau in 1943"Year by Year 1943" -- History Channel International . It consists of a high pressure Diving Cylinder and a Diving Regulator that supplies the diver with Breathing Gas at ambient Pressure , via a demand valve. Before that, there were a few attempts at constant-flow compressed-air breathing sets. TRADEMARK OR NOT? ''Aqualung'' and ''Aqua Lung'' are registered Trademark s for diving equipment. Liquide Air held the patent on the original "Aqua-Lung" until the patent Time-expired . Similar to how the trademarked term Xerox is sometimes used as a verb to describe copying a document, the term "aqualung" became a Generic Word in Britain after public interest in scuba diving began around 1953. The word "aqualung" was commonly used in speech and in publications as a term for divers' open-circuit demand-valve-controlled breathing apparatus and also in figurative uses such as "the Water Spider 's aqualung of air bubbles". The word got into the Russian Language as a generic noun "akvalang" акваланг. In the USA , U.S.Divers kept "Aqualung" as a trademark -- the acronym "SCUBA" (Self Contained Underwater Breathing Apparatus) is the common appellation for that type of equipment, although in more recent times the acronym has become a noun, a verb and an adjective (see Scuba ). OPEN/CLOSED CIRCUIT The original "Aqua-Lung" was an "open-circuit" design, so called because gas flows from the tank, to the diver, out into the water. Other SCUBA's, invented earlier than the "Aqua-Lung", are now termed " Closed Circuit ", as gas flows from the tank, to the diver, through a scubber (which removes carbon dioxide), back to a secondary bag, back to the diver again, in a relatively closed loop. In modern times, this design is commonly called a Rebreather . "TADPOLES" In the early years of scuba diving in Britain , "tadpole" as a nickname for a type of diving gear had two meanings:
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Two Jacques Cousteau Aqua Lungs are shown in this 1950 Video recorded on the island of Maui. |
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