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Interstitial gas probe

  • US 4,350,051 A
  • Filed: 07/07/1981
  • Issued: 09/21/1982
  • Est. Priority Date: 07/07/1981
  • Status: Expired due to Term
First Claim
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1. A probe for use in withdrawing subsurface soil gas samples, said probe comprising:

  • an elongated shaft capable of being driven into the soil, said elongated shaft including a passage for removal of subsurface soil gas samples;

    a probe tip assembly, including a sealing surface, mounted at a first end of said passage;

    sealing means disposed within said passage; and

    actuating means at a second end of said passage for selectively enabling said sealing means to engage said sealing surface.

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