Drain duct air suction device for flush toilet
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United States of America Patent
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Apr 21, 2015
Grant Date -
Aug 23, 2012
app pub date -
Nov 4, 2010
filing date -
Nov 6, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Air suction device for a flush toilet configured to suction air from a toilet drain duct having a suction chamber dividing a tank body interior, a float in the suction chamber and an on-off valve closing an air inlet when the float lifts to prevent air flow from the toilet drain duct side into the suction chamber. The air inlet is higher than the water level in a toilet flushing standby mode. The on-off valve opens the air inlet to allow air flow form the drain duct side in the suction chamber when flush water in the tank drops such that the float is lowered form the raised position. An embodiment includes a valve chest, a float and attracting member for on-off valve manipulation. Another embodiment includes a valve chest with a small air flow manipulation hole.
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