Combined strengthening and corrosion protection of pipelines
US3990478A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1974 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | Nov 20, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Combined strengthening and corrosion protection of a ferrous metal pipeline is obtained by means of a wrap of ferrous metal strip, the strip being coated with a less noble metal, such as zinc or aluminum or a zinc alloy or an aluminum alloy, and the strip being under sufficient tension to strengthen and reinforce the pipe or to arrest fracture propagation. The less noble metal coating of the strip is electrically connected to the pipe to provide cathodic protection for the pipe. A coating of electrically insulating material may be interposed between the pipe and the wrap. An external power source may be utilized for primary cathodic protection in which case the coated strip is relied upon as a secondary or back-up system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.