Snorkel

Abstract

A snorkel including a breathing tube having an air inlet at one end and a mouthpiece at the other end, an elastic, self refilling reservoir for holding ambient air coupled in air flow communication to the breathing tube, and a mechanism in the reservoir in air flow communication with the breathing tube for permitting inflow of air from the breathing tube and providing outflow of air to the mouthpiece only from the reservoir

1 . A snorkel comprising:
 a breathing tube having an air inlet at one end and a mouthpiece at the other end;   a flexible reservoir for holding ambient air coupled in air flow communication to said breathing tube and disposed between said air inlet and said mouthpiece; and   further comprising a water drain valve for separating water from air in said reservoir.   
     
     
         2 . The snorkel according to  claim 1 , further comprising:
 a mechanism in said reservoir in air flow communication with said breathing tube for permitting inflow of air from said breathing tube and providing outflow of air to said mouthpiece only from said reservoir.   
     
     
         3 . The snorkel according to  claim 1 , further comprising a used air reservoir adjacent said flexible reservoir for receiving used air from a diver when under water. 
     
     
         4 . A method for making a snorkel, the method comprising:
 forming a breathing tube with an air inlet at one end;   mounting a mouthpiece on said breathing tube at the other end;   coupling a flexible reservoir for holding ambient air to said breathing tube for flow communication;   providing inflow of air to said reservoir from said breathing tube; and   providing outflow of air to said mouthpiece only from said reservoir.