Face conveyor for extraction plants and trough element for said face conveyor
US9156621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2011 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Jan 9, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21F13/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A face conveyor includes a continuous conveyor formed by a conveyor chain with entrainment plates that are connected to chain links and which, when conveying, circulates in an outward run and a return run, each of which are guided in trough portions by trough elements, which are arranged in a row. Guides provided on each trough element include a first guide on a working face side and a second guide at a spacing from a goaf side. The first guide on the working face side is secured on the trough element between the outward run and the return run. The outward run and the return run extend in a laterally offset manner with respect to each other, and the trough portion guiding the entrainment plates in the outward run is open on the working face side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.