Patent ID: 7946290
Filing Date: 2011-05-24
Classification: B63C,F01N,Y10T

Abstract:
1. An underwater exhaust system for a self-contained underwater breathing apparatus, comprising: a housing for accommodating an air regulator in the self-contained underwater breathing apparatus, the housing comprising at least one exhaust gas outlet for exiting at least one exhaust gas; an exhaust valve being operatively coupled with the housing, the exhaust valve comprising a valve head and a valve stem, the valve head having a water-interface side and at least one sealing edge; and at least one projection in spaced relation to the exhaust valve for directing a water flow away from the exhaust valve, wherein air from an external source entering the air regulator may be exhausted through said exhaust gas outlet, wherein the at least one sealing edge comprises an upper sealing edge and a lower sealing edge, wherein the at least one projection comprises an upper projection and a lower projection, and wherein the at least one exhaust gas exits the exhaust gas outlet between the upper sealing edge and the upper projection, whereby water is directed away from the lower sealing edge and the lower projection, whereby a siphoning effect is prevented, and whereby water ingress is prevented.