Automatic adjustable valve
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United States of America Patent
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May 17, 2016
Grant Date -
Apr 23, 2015
app pub date -
May 16, 2013
filing date -
May 22, 2012
priority date (Note) -
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Abstract
A valve that switches between open and closed states includes a pivoting body having a reservoir, at least one filling port for filling the reservoir and at least one port for draining the reservoir, and a counterweight. The valve further includes a first conduit separate from the body, connected to the filling port, and having a water intake located at a higher position than the filling port, whether the valve is open or closed.
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