The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1998
Filed:
Feb. 14, 1997
John H Ballard, Clinton, MS (US);
John C Morgan, Redwood, MS (US);
Other;
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 The probe also includes a detachable tip which allows grout to be injected into the borehole as the probe is withdrawn.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.