Yves le Prieur

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Commandant Yves Paul Gaston le Prieur (1885 - died 1963) was a French inventor and military man.

During the First World War he invented the plane-mounted Le Prieur rocket launcher for bringing down observation balloons.

In 1924 he invented a hand-controlled self-contained underwater breathing apparatus. It delivered air at constant pressure without a demand regulator. He first experimented with it in 1926.

In 1946 he invented a new version of his breathing set. Its fullface mask's front plate was loose in its seating and acted as a very big and therefore very sensitive diaphragm for a demand regulator: see Diving regulator#Demand valve.

He also patented a number of designs for mechanical lead computing sights for both ship to ship and anti-aircraft guns.

[edit] See also

• Timeline of underwater technology
• Jacques-Yves Cousteau

[edit] References

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