Stress relieving joint for pipe and method
US5683205A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1995 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Apr 28, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B21/502
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A stress relieving joint for pipe such as risers, tendons, and the like used in floating vessel systems wherein a vessel is subject to heave, pitch, and roll motion caused by wind, currents, and wave action; the pipe passing through a constraint opening in the vessel and connected to the sea floor and subject to bending or rotation at the constraint opening. The joint comprises a sleeve member of selected length with ends at opposite sides of the constraint opening and centralizing annuli or rings at sleeve member ends for providing spaced contact points or areas to distribute bending stresses imparted to the sleeve member at the constraint opening to the pipe at the sleeve member ends. A method of relieving or distributing stress in a pipe at a constraint location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.