Drilling apparatus
US4108254A · kind A · utility
2Cited by
11References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1976 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Oct 26, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fluid operated drill is supported upon a boom, which is in turn supported upon a mechanism for moving the boom to different positions, the mechanism being rotatable about a central axis with respect to a relatively stationary frame. A fluid collector means is provided including circumferential grooves communicating with channels for conducting operating fluids from the frame to the positioning mechanism and the fluid operated drill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.