Replaceable corrosion seal for threaded connections
US6857668B2 · kind B2 · utility
30Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Mar 7, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/003
- 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. External seals are formed by metal-to-metal engagement between the pin and box and a third metal body secured circumferentially about the pin. The metal body may be fashioned into a desired annular pin seal surface to mate with and seal with the box at full makeup of the connection. The metal body can be removed and replaced as required to repair or reconstructed the pin seal surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.