Snorkel
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United States of America Patent
Stats
-
Dec 5, 1989
Grant Date -
N/A
app pub date -
Jul 25, 1988
filing date -
Jul 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved diving snorkel for increasing the effectiveness of water purging and for decreasing the likelihood of water interference with breathing, and for reducing the breathing resistance, utilizes one or more of the following features: A trough in the partition between the breathing tube and the purge conduit using a hole to drain water and prevent backflow even when the diver rotates his head; a rise or deflector on the mouthpiece side of the partition to resist water flow toward the mouthpiece and promote drainage through a hole in the partition; a Venturi-type construction in the breathing tube to increase water purgin efficiency for a given exhalation effort; as well as decrease the resistance to air flow to the user; and an air trap immediately exterior to the purge valve in the branch conduit for reducing the resistance to opening of the valve thus promoting easier drainage of residual water in the branch conduit.
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