Method and apparatus for cathodic protection of steel in a concrete structure located in an ionically conductive liquid
US12428736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2022 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Apr 20, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F2201/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Cathodic protection of steel in a concrete column in sea water is simplified by providing a pre-assembled unit including a jacket to surround the column carrying a bulk sacrificial anode outside the jacket and optionally an inner sacrificial anode of a zinc mesh or strips on an inside surface. The jacket can also include a pre-assembled junction box and couplings to connect to the steel. The jacket is attached to the surface of the column at the water line so that the bulk anode is located below the surface of the water and supported relative to the concrete surface solely by the connection of the bulk anode to the covering layer. The bulk anode can be formed of aluminum so as to be less toxic in sea water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.