LIQUID LEVEL SENSOR
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United States of America Patent
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Issued Date -
Jul 10, 2014
app pub date -
Jun 25, 2012
filing date -
Jun 24, 2011
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A nebuliser cup for maintaining a safe level of liquid during nebulization, the cup comprising a liquid level sensor comprising: a first element sensing liquid at or below a position corresponding to a filled liquid level in the nebuliser cup; a second element electrically isolated from the first element and located at a position corresponding to a filled liquid level in the nebuliser cup; and wherein when the cup is not filled with a liquid to the filled liquid level, the first element, the liquid and the second element do not form an electrically coupled circuit; and when the cup is filled with a liquid to the filled liquid level, the first element, the liquid and the second element together form an electrically coupled circuit.
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