US Patent 6981691 Dual segment ball valve
Patent 6981691 was granted and assigned to Dresser, Inc. on January, 2006 by the United States Patent and Trademark Office.
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Patent abstract
A ball valve has a valve body defining an inner seat and having a fluid inlet and fluid outlet and a control ball element rotatably mounted in the inner seat. The control ball element has a partially spherical outer surface, a flow passage having a leading edge, a first inner control surface abutting the leading edge, and a second inner control surface abutting the leading edge at an angle oblique to the first inner control surface.
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Patent Inventor Names
Brian J. Caprera0
Date of Patent
January 3, 2006
0Patent Application Number
106887780
Date Filed
October 17, 2003
0Patent Primary Examiner
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US Patent 6981691 Dual segment ball valve
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