Deep submergence respirator outfit

US4776332A · kind A · utility

Assignee

• Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt e.V. · DE

Inventors

• Jurgen Wenzel · Düsseldorf, DE
• Peter Hampe · Sankt Augustin, DE
• Norbert Luks · Siegburg, DE
• Hartmut Friedrich · Cologne, DE
• Harry Hebborn · Cologne, DE

Key dates

• Filing date: Jul 16, 1987
• Grant date: Oct 11, 1988
• Expiry date: Jul 16, 2007

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B63C11/18
• WIPO field: Transport
• WIPO sector: Mechanical engineering

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.