MECHANICAL VALVE FOR A WATERLESS URINAL
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United States of America Patent
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Issued Date -
Sep 22, 2016
app pub date -
Jan 20, 2015
filing date -
Jan 20, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Described is a duckbill valve assembly for connecting with a waterless urinal. The assembly includes a sleeve for containing a duckbill valve therein. The duckbill valve includes a trough with two substantially parallel sheets forming a sealing area. At least one of the substantially parallel sheets includes a side pleat. When the parallel sheets separate as the valve opens, the side pleat expands, increasing the opening cross-sectional area over that afforded by the parallel sheets alone.
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