Softwall mining method and device
US6505892B1 · kind B1 · utility
10Cited by
4References
19Claims
0Family size
Inventors
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Jun 30, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C45/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A softwall mining method and device. Each of a plurality of mining devices comprise a supporting portion, an earth moving portion and a coupling mechanism for advancing the earth moving portion into a mining face, and for advancing the supporting portion toward the earth moving portion. Supporting portions of the devices are locked together to anchor movement of the earth moving portions, and earth moving portions of the devices are separately locked together to anchor the movement of the supporting portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.