Multi-tubular diving snorkel

Details Multi-tubular diving snorkel Multi-tubular diving snorkel

1996-02-29

1997-09-09

Lewis, Aaron J.

Surgery

Respiratory method or device

Draw-type snorkel

12820127, 12820128, B63C 1116

Patent

active

056645589

ABSTRACT:
A multi-tubed diving snorkel, comprising first and second elongated air tubes positioned side-by-side between an upper end and a lower end of the snorkel. A first valve device is positioned at the upper end of the snorkel for permitting air to flow only in a first direction through a first one of the two tubes and only in a second opposite direction through the second of the two tubes. A second valve device is positioned at the lower end of a snorkel adjacent a mouthpiece for permitting air to flow only in the first direction through the first tube and only in the second direction through the second tube. The side-by-side configuration of the tubes is more flexible than concentric tubes and the use of a valve device adjacent the mouthpiece reduces unwanted mixing of exhaust and intake gases.

REFERENCES:
patent: 2362775 (1944-11-01), Sebouh
patent: 4230106 (1980-10-01), Geeslin et al.

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