Self load sensing circuit board controller diaphragm pump
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United States of America Patent
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Jun 11, 2013
Grant Date -
Nov 1, 2012
app pub date -
Apr 28, 2011
filing date -
Apr 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A self-priming diaphragm pump is connected to a circuit board which activates the self-priming diaphragm pump at predetermined intervals, e.g., for 1-3 seconds. When the self-priming diaphragm pump is activated, the circuit board senses the amperage draw from the pump's motor and either continues to run the pump or stops the pump depending on the different amperage levels read. If there is water present in the bilge, the motor is working harder, requiring more amperage and circuit board keeps the pump running. If there is no water present for the pump to draw, the amperage load is very low and the circuit board shuts the pump off, retesting it in the predetermined interval.
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