Monitoring of soil
US5402667A · kind A · utility
14Cited by
27References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1992 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Sep 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0232
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for monitoring the compaction of soil material in a defined region include hammer structure for impacting soil material in the defined region, a sensor for disposition at the bottom of the defined region the includes a transducer for developing an electric signal in response to energy transmitted through soil material from the hammer structure, and a control module responsive to electric signals from the sensor for providing an indication of the quality of compaction of soil material in the defined region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.