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Fluid sampling apparatus

  • US 4,691,580 A
  • Filed: 01/08/1986
  • Issued: 09/08/1987
  • Est. Priority Date: 01/08/1986
  • Status: Expired due to Fees
First Claim
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1. In an apparatus for sequentially withdrawing liquid samples from a plurality of containers, transporting the samples to an analyzer and then analyzing the samples in the analyzer:

  • a resilient conduit having an exterior wall, a longitudinal axis and an interior passage, the interior passage adapted to have fluid flowing therethrough and being defined by an interior wall of the resilient conduit;

    a second conduit from the resilient conduit to the analyzer to transport samples from the resilient conduit to the analyzer, the second conduit having at least two orifices, a longitudinal axis and an interior passage adapted to have fluid flow therethrough, the second conduit extending through the exterior wall of the resilient conduit and having at least one orifice in the interior passage of the resilient conduit;

    means for periodically deforming the interior wall of the resilient conduit into sealing engagement with the orifice of the second conduit in the interior passage of the resilient conduit to sequentially separate and transport samples from the resilient conduit to the analyzer, the deforming means being exterior to the resilient conduit and including a pinch member opposite the orifice in the interior passage of the resilient conduit and means for actuating the pinch member to abuttingly engage and deform said exterior wall to sealingly engage the interior wall against the orifice in the interior passage with the resilient tube retaining an interior passage of reduced cross section for liquid flow therein.

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