Double breath divers valve

Details Double breath divers valve Double breath divers valve

1976-12-27

1978-06-20

Michell, Robert W.

Surgery

Truss

Pad

1281422, A62B 700

Patent

active

040955923

ABSTRACT:
A respiratory mask including a mouthpiece in a breathing conduit or passage for conveying breathing gas to and from a breathing chamber. The breathing chamber has collapsible or diaphragm-like walls for expanding and contracting in response to the pressure of the ambient medium surrounding the mask, such as water, as the mask is utilized by a diver. A fresh air gas supply conduit is connected to the respiratory mask for supplying breathing gas to the breathing chamber upon the breathing demand of the wearer of the mask. The breathing gas in the breathing chamber is utilized twice as an exhaust valve connecting the breathing chamber with the ambient medium is maintained closed during two consecutive breathing cycles by an electromagnet which is energized through a replaceable battery in the mask and controlled through an electronic circuit responsive to a bellows which reacts to each breathing cycle of the wearer. In addition, should the electromagnet fail the exhaust valve is biased to the closed position by a spring and operates as a normal exhaust valve during each breathing cycle.

REFERENCES:
patent: 3200816 (1965-08-01), Bartlett, Jr.
patent: 3827432 (1974-08-01), Lundgren et al.
patent: 3923053 (1975-12-01), Jansson
patent: 4031887 (1977-06-01), Botos et al.

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