Diving snorkel

Details Diving snorkel Diving snorkel

1993-04-20

1994-01-25

Wiecking, David A.

Surgery

Respiratory method or device

Draw-type snorkel

12820716, B63C 1116, A61M 1600, A62B 902, A62B 906

Patent

active

052807851

ABSTRACT:
A diving snorkel having a ventilating portion comprising an assembly of a first pipe portion and a second pipe portion extending in parallel to and communicating with each other, and a main pipe of which the upper end is connected to the first pipe portion, wherein the second pipe portion is provided at its upper end with an air inlet and at its lower end provided with means to prevent the undesirable flow of water into the main pipe 2 through the air inlet as a diver is in the water.

REFERENCES:
patent: 3993060 (1976-11-01), Mitchell
patent: 4278080 (1981-07-01), Schuch
patent: 4655212 (1987-04-01), Delphia
patent: 4805610 (1989-02-01), Hunt
patent: 4872453 (1989-10-01), Christianson
patent: 4879995 (1989-11-01), Christianson
patent: 4910806 (1990-03-01), Baker
patent: 5117817 (1992-06-01), Lin
patent: 5143059 (1992-09-01), Delphia

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