Dynamic cone penetration device
US5616833A · kind A · utility
7Cited by
7References
8Claims
0Family size
Inventor
Key dates
| Filing date | Jun 21, 1996 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Jun 21, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dynamic cone penetration device for determining denseness of soil has reduced friction to provide more accurate testing. The device comprises a cone rod having a soil penetrating cone at one end and an anvil at the other end. The cone has a larger diameter than the cone rod, and the anvil has a striking surface for striking with a predetermined force. A rotation system containing a motor rotates the cone rod at a sufficient speed to reduce friction between the cone rod and the soil as the striking surface is struck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.