Method and apparatus permitting beltway advance in a mining scheme
US4969691A · kind A · utility
13Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21F13/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a mining scheme, a mobile continuous haulage system follows a miner and transports material onto a floor mounted beltway. The beltway supports a roadway on which the haulage system is carried. The roadway has wheels captured in outboard rails on the beltway and lift cylinders on the roadway when lowered, raise the beltway off the floor so that the beltway can be advanced for a belt move to facilitate adding additional belt sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.