Underwater breathing apparatus

Details Underwater breathing apparatus Underwater breathing apparatus

1975-02-13

1976-06-29

Michell, Robert W.

Surgery

Truss

Pad

A62B 700

Patent

active

039658929

ABSTRACT:
Underwater breathing apparatus which includes means for reducing the power required to operate the pumps that effect flexible-hose interchange of breathing gas to and from a diver and a diving bell. This is accomplished primarily by maintaining a substantially constant differential between the supply and return pressures.

REFERENCES:
patent: 3515133 (1970-06-01), Parker
patent: 3859994 (1975-01-01), Almqvist et al.

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