Deep diving breathing systems

Details Deep diving breathing systems Deep diving breathing systems

1981-12-03

1984-04-17

Recla, Henry J.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820524, 12820128, 137 812, A62B 700

Patent

active

044428359

ABSTRACT:
A deep diving breathing system in which a breathable gas mixture is circulated through a diving helmet by a push-pull pump includes an inlet flow control valve, an outlet gas flow regulator valve, and a bleed valve. The bleed valve operates in response to the pressure of gas flowing from the outlet gas flow regulator valve to bleed gas from a gas supply line upstream of the inlet flow control valve. The system facilitates diving operations from a diving bell at a range of depths and recovery of helium in a helium-oxygen breathing gas mixture.

REFERENCES:
patent: 3965892 (1976-06-01), Colston et al.
patent: 4182324 (1980-01-01), Hills

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