Circumferential-weld reinforcing device
US6450207B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Feb 21, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L58/181
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a device reinforcing circumferential welds 8 which join two contiguous pipes 6 and 7 in order to increase the fatigue life of said welds by reducing mechanical stresses in them when being subjected to periodic bending.The device comprises a rigidifying element 10 which is firmly joined to said pipes by a connection means 11, 13, said bush being made of the same material as the pipes. The rigidifying element 10 consists of a bush slipped over the two pipes 6, 7 opposite the weld 8. The connection means is a hardening material 11 such as resin or cement which is injected between bush and pipes and which is confined at this site by shaping, in particular cold-forming, the bush's ends.The application is to offshore hydrocarbon conveyance conduits subjected to periodic loads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.