Drill boom arrangement
US3993271A · kind A · utility
3Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1975 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Jul 3, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/025
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill boom arrangement for positioning an elongated rock drilling apparatus to different drilling positions with respect to a support. The rock drilling apparatus is carried by a drill boom and the drill boom is mounted on a boom bracket. The boom bracket is slidable relative to the support in the latitudinal direction of the rock drilling apparatus. The boom bracket is moved along guiding means on the support means of a hydraulic cylinder. Means are provided for gearing up the piston stroke of the hydraulic cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.