Mining apparatus and method
US4082360A · kind A · utility
6Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1976 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | Jun 23, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D23/0445
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An articulated ancillary support for a conveyor is attached onto the forward side of a mine roof chock by extensible means which, when retracted towards the chock, shifts the ancillary support from a normal condition in which it occupies an area of relatively wide lateral extent to another condition in which it overlies an area of relatively narrow lateral extent, freeing a large portion of the space under the chocks to clear the way for a retreating continuous miner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.