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Method and apparatus for dispensing liquids and solids

  • US 5,992,686 A
  • Filed: 02/27/1998
  • Issued: 11/30/1999
  • Est. Priority Date: 02/27/1998
  • Status: Expired due to Term
First Claim
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1. A dispensing system comprisinga plurality of progressive cavity pumps;

  • a mixer in communication with the progressive cavity pumps;

    a conduit having an outlet, the conduit being in pressure flow communication between the mixer and the outlet;

    a pressure sensor in communication with the pressure flow to the outlet;

    a plurality of motors, the motors being coupled to the progressive cavity pumps, respectively;

    a controller in signal communication with the pressure sensor and with the motors, the controller being responsive to pressure input from the pressure sensor to control the motors based on the pressure sensed by the pressure sensor and on the pressure sensed by the pressure sensor as a function of time.

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