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In-place soil sampler

  • US 5,101,917 A
  • Filed: 06/25/1990
  • Issued: 04/07/1992
  • Est. Priority Date: 06/25/1990
  • Status: Expired due to Term
First Claim
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1. In a soil sampler assembly for obtaining undisturbed soil samples including an elongated hollow tubular outer corer means for coring the soil during sampling;

  • said hollow tubular outer corer means including inner and outer surfaces and first and second ends;

    an elongated hollow tubular inner sampling means defining inner and outer surfaces having first and second ends and disposed within said elongated hollow tubular outer corer means for receiving a soil sample cored by said hollow tubular outer corer means, the improvement comprising;

    said inner sampling means supported within said outer corer means for complete removal therefrom;

    retainer means adapted to be located within said hollow tubular outer corer means;

    said retainer means connected to said elongated hollow tubular inner sampling means for movement with said inner sampling means from said outer corer means;

    said retainer means including a support ring and a plurality, of flexible arcuate leaves having an opened position and a closed position;

    each of said flexible arcuate leaves including a base segment connected to said support ring and each of said flexible arcuate leaves having an apex portion located in close spaced relationship when said leaves are in their closed position to form a convex support surface engageable with a soil sample for holding a soil sample within said elongated hollow tubular inner sampling means when said elongated hollow tubular inner sampling means is removed from said outer corer means while said outer corer means remains in the soil without disturbing the surrounding soil; and

    release means connected to said outer corer means engageable with said retainer means to cause each of said plurality of flexible arcuate leaves to be bent radially outwardly of the inner surface of said elongated hollow tubular inner sampling means to allow a soil sample to be directed from said outer corer means into said elongated hollow tubular inner sampling means as said outer corer means is driven into the soil to be sampled.

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