Liquid drainage system
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United States of America Patent
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Dec 31, 2013
Grant Date -
May 3, 2012
app pub date -
Dec 15, 2009
filing date -
Dec 12, 2008
priority date (Note) -
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Abstract
A liquid drainage system for a sanitary installation has a liquid level sensor for detecting the level of liquid in a drainage receptacle. The sensor employs non-contact sensing, for example an electric field, to detect the liquid level and controls the operating of a drainage pump depending on the detected liquid level. The drainage receptacle may for example be the gulley of a shower tray, or a manifold connected to two or more sinks.
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