Deep submergence respirator outfit

Details Deep submergence respirator outfit Deep submergence respirator outfit

1987-07-16

1988-10-11

Michalsky, Gerald A.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820429, B63C 1122

Patent

active

047763329

ABSTRACT:
Intermediate a first pressure reducing means (12, 15) reducing the pressure f a pressure source (10) to nearly the external pressure P.sub.A of the diving depth, and the respiratory mask (18) of the diver, there is a flexible first buffer container (16) whose internal pressure is slightly above the external pressure to ensure that a buffer volume of respiration gas is continuously available directly to the diver. A second buffer container (21) is mounted intermediate the respiratory mask (18) and a second pressure reducing means (26, 23) for waste air. The pressure maintained in the second buffer container is slightly below the external pressure P.sub.A so that a specific exhalation volume is permanently available to the diver. To avoid a direct blowing through the respiratory mask, a relief pressure valve (20) only opens responsive to the lung activity of the diver.

REFERENCES:
patent: 3370585 (1968-02-01), O'Neill
patent: 3859994 (1975-01-01), Almqvist et al.
patent: 4137912 (1979-02-01), O'Neill
patent: 4362154 (1982-12-01), Le Masson
German Publication, "Tauchtechnik", pp. 109-111 (Apr. 1969).

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