Mining equipment
US4274765A · kind A · utility
2Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1978 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Nov 17, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D23/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a system for the supply of fluid under pressure to machinery of an underground mine working, lengths of fixed conduit are secured to parts of the conveyor assembly, prior to the assembly of said parts at the underground mine working. When the conveyor assembly has been assembled, the length of fixed conduits are interconnected, either by straight lengths of flexible conduit, or by branched lengths of flexible conduit, where take off for fluid under pressure is required for the machinery, for example a roof support unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.