Diver gas safety valve

Details Diver gas safety valve Diver gas safety valve

1977-09-01

1980-01-08

Recla, Henry J.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

128276, 137508, B63C 1114

Patent

active

041823249

ABSTRACT:
For use in helium or other gas reclamation, a diver gas safety valve adapted for attachment to a diver's helmet and to an exhaust gas recovery system, the safety valve including a collapsible tube for expanding to transfer exhaust gas having a pressure greater than ambient water pressure surrounding the diver and for collapsing to prevent such exhaust gas transfer at exhaust gas pressure below the ambient water pressure in order to prevent dangerous, sudden outflows of the exhaust gas from the diver's helmet.

REFERENCES:
patent: 3298391 (1967-01-01), Savage
patent: 3353560 (1967-11-01), McCulloch
patent: 3968794 (1976-07-01), O'Neill
patent: 4080964 (1978-03-01), Savoie, Jr.
patent: 4137912 (1979-02-01), O'Neill

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