F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 1/14 (2006.01) F04B 53/10 (2006.01) F16K 1/12 (2006.01) F16K 1/36 (2006.01)
Patent
CA 2535473
Apparatus and methods for constructing a valve comprising a sealing member and a hollow ball operable to sealingly engage the sealing member. A guide housing disposed about said hollow ball and does not constrain rotation of said hollow ball. A spring is disposed between the hollow ball and the guide housing so as to bias the hollow ball into sealing engagement with the sealing member. The hollow ball is constructed from two unequal sized portions and may comprise a hollow, spherical body having an aperture and a plug sized so as to closely fit within the aperture.
Riley Andrew Dale
Staggs Mark A.
Deeth Williams Wall Llp
National Oilwell Varco L.p.
National-Oilwell L.p.
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