Sampling zone isolation tool and method for groundwater sampling system
US12013317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2022 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Oct 27, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/1031
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A screen point groundwater sampling system includes a drive head positioned between the upper end of a cylindrical housing and a lower end of a probe rod. A latching tool is provided to secure a mechanical pump to the drive head upon insertion of the latching tool into the inner bore of the drive head. The latching tool creates a water-tight seal between the drive head and the inlet of the mechanical pump to prevent contamination of the groundwater sample from water leaking into the probe rod string above the drive head. A frangible structure on the latching tool allows the mechanical pump to be removed from the drive head upon applying sufficient vertical force in an upward direction to shear the frangible structure. The latching tool can also be used to attach a sample tubing to the drive head for use with a pump located at the ground surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.