Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 15, 2008
Patent Application Number
11278441
Date Filed
April 3, 2006
Patent Primary Examiner
Patent abstract
Methods and apparatus for sealing an aperture that provides fluid communication between a second and first chamber of a dual chamber orifice fitting. A sealing assembly comprises a closure member that is rotatably moveable between an open and closed position relative to the aperture. A secondary seal is disposed within a recessed portion on a sealing face of the closure member. The recessed portion has a perimeter defined by a shoulder A primary seal is disposed within a groove formed between the shoulder and the secondary seal.
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