Hydraulic aligner device for flexible continuous tram mining machine
US5123709A · kind A · utility
0Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Oct 17, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21F17/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A moveable hydraulic aligner device, particularly suited for aligning a roadway used with a full continuous tram mining machine following a drilling cycle, comprises an upper portion, supported by wheels which allow the device to ride along the length of the roadway, to which two side portions are attached. Each of the side portions supports an extendable hydraulic cylinder which pushes against the rib of a mine tunnel to force the roadway back to the center.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.