Surgery – Respiratory method or device – Draw-type snorkel
Reexamination Certificate
2000-05-10
2001-08-21
Weiss, John G. (Department: 3761)
Surgery
Respiratory method or device
Draw-type snorkel
C128S201270
Reexamination Certificate
active
06276362
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to diving snorkel allowing a diver to breath as the diver swims under water.
BACKGROUND OF THE INVENTION
Typical structure of diving snorkel (as shown in
FIG. 1
) is generally divided into three parts: a mouth portion is below, a breathing tube is in the middle and an anti-water piece is above. The mouth portion is a hollow tubular structure, and includes three passages: a passage passes up to the breathing tube; a passage in a bending tube that passes to the mouthpiece; and another downward passage passes to a water outlet. There is a non-return valve provided on the water outlet, such that the water can be let out and cannot come back in. The bore breathing tube is a hollow tube and connects up to the anti-water piece and down to the mouth piece. The anti-water piece reduces the water coming in as much as possible and allows air to come in. The air passes up to the mouthpiece through the breathing tube. The water falls into the water outlet of the mouthpiece along the breathing tube due to gravity and the water outflows downward from the non-return valve due to the pressure that the diver may intensely breathe out through the mouthpiece to expel out the water. These three parts are generally manufactured separately, and are assembled by means of preset clamping members. Most products which are commercially available belong to these types.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a structure in which the anti-water piece and the breathing tube can be directly molded together, above has a function of the against water piece, with a down side having a function of the bore breathing tube, and a diving snorkel is assembled with the mouth portion by means of manual pressure deformation.
REFERENCES:
patent: 4805610 (1989-02-01), Hunt
patent: 4884564 (1989-12-01), Lamont
patent: 5092324 (1992-03-01), Christianson
patent: 5280785 (1994-01-01), Fujima
patent: 5529057 (1996-06-01), Ferrero et al.
patent: 6073626 (2000-06-01), Riffe
patent: 6129081 (2000-10-01), Wu
Dougherty & Troxell
Mitchell Teena
QDS Injection Molding Inc.
Weiss John G.
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