Method for remote control of a coal shearer
US4753484A · kind A · utility
53Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1986 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Oct 24, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for remotely controlling the mechanical functions of a coal cutting machine's electrohydraulic system which utilizes a medium frequency remote control communication system and a coal-rock interface sensor. The coal-rock interface sensor is a shielded resonant horizontal loop antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.