Drill-string connector
US7690422B2 · kind B2 · utility
39Cited by
32References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2007 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Apr 12, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A connector (10) which provides a fluid tight connection between a fluid supply and a drill-string (4), the connector (10) comprising a piston-rod (20) and a cylinder (15), the piston-rod (20) having a seal at or towards its free end which is adapted to sealingly engage the drill-string (4) when the piston-rod (20) is at least partially extended from the cylinder (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.