Patent ID: 7357134
Filing Date: 2008-04-15
Classification: B63C,F01N,Y10T

Abstract:
1. An underwater exhaust system, comprising: a housing for an air regulator; an exhaust valve operatively coupled to said air regulator housing and having a water interface side with at least one sealing edge; and a valve cover operatively coupled to said exhaust valve and configured to create an exhaust air pocket on the water interface side of said exhaust valve, said pocket allowing at least one portion of said exhaust valve to operate in exhaust air medium during underwater use of the air regulator, said valve cover including at least one water inlet passage and at least one exhaust gas opening, wherein said at least one exhaust gas opening is disposed at lower elevation relative to said exhaust air pocket, wherein the size of said at least one exhaust gas opening is larger than the size of said at least one exhaust gas outlet to ensure unobstructed flow of gases therethrough.