Shearing machine with roof-bolt drilling and setting devices
US5050934A · kind A · utility
19Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1990 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | May 15, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D20/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A shearing machine with roof-bolt drilling and setting devices which are jointedly connected to the shearing machine and can be hydraulically braced between roof and floor of the roadway. A multiplicity of roof-bolt drilling and setting devices are connected to a common supporting frame, the supporting frame being connected to the shearing machine via guide bars running in the longitudinal direction of the machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.