Air system for scuba diving

Details Air system for scuba diving Air system for scuba diving

1978-12-13

1980-10-14

Recla, Henry J.

Surgery

Respiratory method or device

Combined with or convertible to a nonrespiratory device, or...

12820426, B63C 1122

Patent

active

042275210

ABSTRACT:
A scuba diver uses air not only for breathing, but also to inflate a buoyancy jacket or vest. A single mechanism controls the flow of air for buoyancy and for breathing. The mechanism is held by a mouthpiece and includes (1) a demand regulator, (2) a breathing chamber between the regulator and the mouthpiece, (3) a pruge or one way exhaust valve connected to the breathing chamber, (4) a buoyancy chamber communicating with an inflation/deflation hose for the jacket or vest, (5) a first manual control valve for sending relatively high pressure air to the buoyancy chamber and (6) a second composite manual control valve that in its initial position opens the buoyancy chamber to the breathing chamber for exhaust of air through the purge valve and consequent deflation of the buoyancy jacket or vest, and that in its final position closes the purge valve for oral inflation or emergency breathing.

REFERENCES:
patent: 3436777 (1969-04-01), Greenwood
patent: 3874378 (1975-04-01), Isaacson et al.
patent: 3973588 (1976-08-01), Holst
patent: 4045835 (1977-09-01), Flam et al.
patent: 4137585 (1979-02-01), Wright

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