Adjustable universal flapper
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United States of America Patent
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Feb 28, 2012
Grant Date -
Oct 9, 2008
app pub date -
Apr 1, 2008
filing date -
Apr 5, 2007
priority date (Note) -
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Abstract
A toilet flush flapper valve includes a flapper and a ballast with a vent hole for enabling air to escape from the ballast, the ballast is rotatably fixed to the flapper for enabling positioning of the vent hole for controlling buoyancy of the ballast in order to control closing time of said flapper.
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