Snorkel with exhalation valve

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 suppo...

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Bibliographic Details
Main Authors KAWASHIMA; HARUO, KAWANA; KENJI
Format Patent
LanguageEnglish
Published 17.08.1999
Edition6
Subjects
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
EQUIPMENT FOR DWELLING OR WORKING UNDER WATER
FIRE-FIGHTING
HUMAN NECESSITIES
LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS
LIFE-SAVING
LIFE-SAVING IN WATER
MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
PERFORMING OPERATIONS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
TRANSPORTING
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Summary: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.
Bibliography:Application Number: US19980013217