Fail safe protective wrapping
US9034778B2 · kind B2 · utility
0Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2007 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Oct 28, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/339
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Electrically conductive paths are positioned in and extend transversely across the width of the backing of strips of wrapping material. The electrically conductive paths provide means for conducting electrical current through spirally wrapped protective materials from the surrounding earth to voids formed adjacent the overlapped edges of the wrapping material and thus permit cathodic protection for pipe surfaces exposed to voids formed as a result of improper application or bonding failures of the wrapping material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.