Control system for longwall shearer
US4634186A · kind A · utility
17Cited by
3References
2Claims
0Family size
Inventor
Key dates
| Filing date | Oct 24, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Oct 24, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/302
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A control system for controlling the elevation of a cutter of a longwall shearer in which the attitude of the body of the shearer and the rate of change of attitude with longitudinal movement of the shearer are monitored and the elevation of the cutter is varied as a function of the sum of the product of a first constant times attitude and the product of a second constant and the rate of change of attitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.