Corrosion seal for threaded connections
US6811189B1 · kind B1 · utility
25Cited by
32References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2000 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Oct 4, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/918
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The threaded connection between the pin and the box ends of two pipes is sealed externally and internally to protect the threads in the connection from exposure to corrosive fluids. Seals are provided at each axial end of the threads. The external seals may be formed by metal-to-metal engagement between the pin and box or may be provided by an annular, elastomeric ring engaging the pin and box of the connection. A threaded compression ring may be used to compress the elastomeric seal between the pin and box. The seals protect dynamically loaded threaded connections from fatigue-induced failure in corrosive environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.