Method and apparatus for environmental sampling
US5979569A · kind A · utility
6Cited by
46References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1995 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Nov 6, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/081
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sampling device having a fluid collecting portion adapted to recover a fluid sample from a subsurface. Fluid entering the fluid collecting portion passes through a valve which may be remotely actuated. After the sampling device has been driven into the subsurface and a fluid sample has been collected in the fluid collecting portion, the valve is closed to prevent cross-contamination of the fluid sample in the fluid collecting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.