Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1997-02-14
1998-04-28
Biegel, Ronald L.
Measuring and testing
Sampler, sample handling, etc.
Capture device
7386463, 175 50, 175 59, G01N 126, E21B 4900
Patent
active
057447306
ABSTRACT:
A penetrometer probe for detecting the presence of subsurface radon gas and obtaining soil classification data is characterized by an elongated body containing recessed inlet and outlet ports, a sampling chamber, a vacuum/air controlled valve system having pistons displaceable between open and closed positions, and a vacuum/air system for drawing gas samples into and expelling gas samples from the sampling chamber. The probe also includes a detachable tip which allows grout to be injected into the borehole as the probe is withdrawn. In an alternate embodiment, the probe includes an outer sleeve for controlling the taking of gas samples in which the sleeve slides upwardly in a groove contained in the probe body during penetration, thereby covering the gas sampling ports, and slides downwardly during retraction, thereby uncovering the soil gas sampling ports and allowing gas to flow to the sampling chamber.
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Ballard John H.
Morgan John C.
Biegel Ronald L.
Marsh Luther A.
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