Preloaded riser coupling system
US7337848B2 · kind B2 · utility
32Cited by
17References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Aug 23, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49947
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An offshore riser system has riser joints, each having a pin and a box. The pin has an external grooved profile that is engaged by a locking element carried by the box of another riser joint. An actuating ring engages with the locking element to move it into the locked position. A retractable spider supports the string of riser while the new joint is being made up. A makeup tool on the riser deploying floor moves the ring relative to the locking element, causing the locking element to move to the locked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.