Heated Breathing Bag Sheath.
Patent, Filed 24 Aug 81, patented 15 Feb 83,
DEPARTMENT OF THE NAVY WASHINGTON DC
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This invention relates generally to the field of underwater breathing apparatus for divers, and more particularly to a heated sheath device for improving the operation and duration and comfort in use of diving apparatus of the type comprising a CO2 carbon dioxide scrubbing cannister, one or more breathing bags, and flexible hoses for conducting breathing gas between the diver and the breathing bag or bags. It is a principal object of this invention to provide a means for utilizing hot water to heat the flexible breathing bags hoses of an existing underwater breathing apparatus without change in the breathing bag or hose design. Another, and important object is the provision of a water heated sheath device as an accessory that can be installed and removed with little expenditure of time or effort and which interferes little with maintenance and servicing of the breathing apparatus. Still another object is to provide a heated breathing bag sheath that is light in weight, economical to produce, efficient and reliable in operation, and which can be configured for use with any of variety of breathing apparatus having breathing bag means exposed to ambient water and having a source of hot water.
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