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US 4,009,583 AGranted
Buoyancy control apparatus for divers
OwnerBrian Leonard Buckleinventor
Life of this patent
Estimating the term…
Abstract
A buoyancy control system for carrying by a diver has a fluid-tight reservoir, preferably of looped tubing, into which water and compressed gas can be selectively admitted through respective inlet valves to displace gas and water respectively in the reservoir through respective outlet valves. The relative amounts of water and gas in the reservoir can therefore be adjusted to provide a required degree of buoyancy for the diver.
Claims11
A buoyancy control apparatus for carrying by a diver comprising:
- frame means supporting coiled or looped tubular fluid-tight reservoir means;
- carrying means for attachment of the frame means to a diver;
- water inlet valve means for admitting water to said reservoir from externally of the apparatus to displace gas from the reservoir;
- gas outlet valve means for releasing said displaced gas from the reservoir to externally of the apparatus;
- gas inlet valve means for admitting compressed gas to the reservoir to displace water from the reservior;
- and
- water outlet valve means for releasing said displaced water from the reservoir,
- whereby water and gas can be selectively admitted to the reservoir to displace gas and water respectively already in the reservoir thereby to change to buoyancy of the apparatus.
5 more elements
Dependencies are inferred from the claim text.