Snorkel with exhalation valve

Details Snorkel with exhalation valve Snorkel with exhalation valve

1998-01-26

1999-08-17

Weiss, John G.

Surgery

Respiratory method or device

Draw-type snorkel

12820524, A62B 700

Patent

active

059378506

ABSTRACT:
A bottom of a mouthpiece 2 of a snorkel comprises a first base plate 16 having through-holes 22 for drainage and against which a non-return valve 7 bears from the outside, second base plates 17 spaced from the first base plate 16 toward a top of the snorkel so as to cover the through-holes and supports 18 extending between the first plate 16 and each of the second base plates 17. The interior of the mouthpiece 2 drainably communicates with the exterior thereof through openings defined between the first base plate 16 and each of the second base plates 17 and the through-holes 22, when the non-return valve 7 is opened.

REFERENCES:
patent: 4834084 (1989-05-01), Walsh
patent: 4838262 (1989-06-01), Katz
patent: 5261396 (1993-11-01), Faulconer et al.
patent: 5487379 (1996-01-01), Koshiishi

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