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Electrolytic pump

  • US 5,252,192 A
  • Filed: 10/19/1992
  • Issued: 10/12/1993
  • Est. Priority Date: 10/19/1992
  • Status: Expired due to Fees
First Claim
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1. An electrolyte pump apparatus adapted for use with an in-tank electrochemical sensor wherein said sensor includes at least one sensing electrode, said electrolytic pump apparatus comprising:

  • an electrode chamber having a top end and a bottom end through which electrochemical fluid is passed from said bottom end to said top end;

    at least two pumping electrodes located within said electrode chamber and above said sensing electrode; and

    control means for applying sufficient voltage to said pumping electrodes such that at least one of said electrodes is positively charged relative to the electrochemical fluid while at least one of the other electrodes is negatively charged relative to the electrochemical fluid, wherein said charged pumping electrodes electrolyze the electrochemical fluid within said electrode chamber to produce a gaseous stream within said electrode chamber, said gaseous stream flowing toward said electrode chamber top end to thereby provide for movement of fluid through said electrode chamber while preventing said gaseous stream from interfering with the sensing electrode measurements.

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