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Molded diaphragm liquid color pump

  • US 9,850,888 B2
  • Filed: 10/19/2015
  • Issued: 12/26/2017
  • Est. Priority Date: 06/15/2012
  • Status: Active Grant
First Claim
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1. A liquid color container with a pneumatic pump, comprising:

  • a) the container having a lid with an aperture therein;

    b) a pump body portion within the container and connected to the underside lid, overlying the aperture;

    c) a diaphragm between the pump body portion and the lid, underlying the aperture, being movable away from the lid responsively to pneumatic pressure applied to a side of the diaphragm facing the lid and returning towards the lid upon relief of such pneumatic pressure;

    d) a potentiometer for sensing position of the diaphragm and providing a signal indicative thereof;

    e) a solenoid valve for applying pressurized air to the diaphragm; and

    f) a microprocessor for receiving the signal from the potentiometer and regulating operation of the solenoid valve.

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