Patent ID: 6557579
Filing Date: 2003-05-06
Classification: F16K,F17C,Y10T

Abstract:
A filling valve for a pressurized fluid container, comprising:a hollow valve body defining an upper valve body portion defining an inlet, a lower valve body portion defining an outlet and a longitudinal travel axis and internal valve body side walls; and a sealing assembly located within said valve body and being arranged for displacement along said longitudinal travel axis from an open position to a closed position, said sealing assembly comprising a generally hollow cylindrical portion including an upper portion and a lower portion and having generally cylindrical walls arranged in non-sealing engagement with said internal valve body side walls and a flexible metal disc mounted at said upper portion of said cylindrical portion for sealing engagement with a surface of said internal valve body side walls when said sealing assembly is in said closed position, the non-sealing engagement between said cylindrical walls of said sealing assembly and said internal valve body side walls allowing particulate matter to flow therebetween, thereby reducing jamming of said sealing assembly in said hollow valve body, said flexible metal disc being spaced from said inlet and engaging an intermediate wall portion of said internal valve body side walls of said hollow valve body when said lower portion of said cylindrical portion engages said lower valve body portion at said outlet, said lower portion of said sealing assembly being spaced from said lower valve body portion at said outlet when said sealing assembly is in said open position, said flexible metal disc being moved away from said intermediate wall portion of said internal valve body side walls of said hollow valve body when said sealing assembly is in said open position, thereby to allow particulate matter to flow between said sealing assembly and said internal valve body side walls, while permitting full fluid flow through said hollow cylindrical portion of said sealing assembly to said outlet, when said sealing assembly is in said open position, and said sealing engagement of said flexible metal disc preventing particulate matter from flowing between said sealing assembly and said internal valve body side walls.