Apparatus and method for obtaining subterranean samples
US5211249A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1992 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Jan 31, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B25/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides an apparatus and method for obtaining a subterranean material sample. The inventive sampling apparatus comprises an elongate housing having a passageway extending longitudinally therethrough, a tip member movable through the passageway, and a locking means for releasably preventing the tip member from moving from a first portion of the passageway to a second portion of the passageway. The inventive sampling method comprises the step of inserting the inventive sampling apparatus into the ground. The present invention also provides a device for retaining material in a housing, said device comprising a plurality of resilient petal members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.