Hollow ball valve assembly
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United States of America Patent
Stats
-
Apr 1, 2008
Grant Date -
Aug 17, 2006
app pub date -
Feb 14, 2005
filing date -
Feb 14, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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.
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