Mining machine
US4047761A · kind A · utility
4Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1975 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Sep 5, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mining machine suitable for cutting roadways in coalmines comprises a cutting head, a conveyor for moving mined material rearwardly of the machine and a discharge conveyor for unloading the mined material to one side of the machine. As the machine advances the discharge conveyor can be used selectively to unload coal onto a stage loader and other material into packholes, thereby saving labor. The discharge conveyor may be pivotable about horizontal and/or vertical axes, longitudinally extendable or movable relative to the machine or cutting head to obtain maximum control over the area in which it discharges material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.