Safety apparatus for a mining machine
US4287692A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Jun 12, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Safety apparatus for a mining machine having a gathering head for gathering product (e.g., coal) in a mine, a conveyor system which extends rearwardly along the machine from the gathering head for conveying the product rearwardly for discharge at the rear of the machine, and power generating equipment for driving the conveyor system and the gathering head. The conveyor system comprises an elongate conveyor support or structure pivotally mounted for swinging movement about a horizontal axis extending transversely of the machine between lowered and raised positions. The machine has a frame having a rear bottom section below the conveyor support and sides extending upwardly from the rear bottom section. Hydraulic lift means is provided between the rear bottom section and the support powered by the power equipment for pivoting the support. Access is provided between the support and the rear bottom section, when the support is raised, for personnel servicing machine components located in this area. A pair of struts is provided each pivotally mounted on the rear bottom section for pivotal movement about an axis extending longitudinally of the machine between a lowered storage position wh…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.