Product Level Sensor for a Product Dispenser
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United States of America Patent
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Issued Date -
Dec 18, 2014
app pub date -
Oct 21, 2011
filing date -
Oct 21, 2011
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Abstract
A dispenser for dispensing paper or non-woven sheet product for wiping, wherein the level of sheet product contained in the dispenser decreases as the sheet product is dispensed, the dispenser comprising an ultrasonic level sensor for determining the level of the sheet product contained in the dispenser, wherein the ultrasonic sensor is arranged to direct the ultrasonic beam toward a surface associated with the sheet product, wherein a distance that the beam travels to the surface changes progressively as the level of the sheet product in the dispenser changes from a full condition to an empty condition.
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