Louvered anode for cathodic protection systems
US6562229B1 · kind B1 · utility
Inventors
Key dates
| Filing date | May 12, 1997 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Aug 1, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F13/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A metal anode useful in a galvanic or impressed current cathodic protection system for a steel reinforced concrete article is a unitary, multi-plane, porous, metal anode strip or ribbon having a plurality of louvers defining a plane or planes at the lateral extremities of said louvers. In one embodiment, louvers extending in their long dimension longitudinally on the anode strip are spaced apart from adjacent louver units by an intermediate plane. Louvered anode strips consisting of a valve metal or alloy or mixture thereof are useful at an anode current density of up to about 20 milliamps per square foot. Louvered metal anodes comprising an electrocatalytically active coating on a valve metal substrate are useful at higher anode current densities. Sacrificial metal anodes such as zinc anodes are useful in galvanic cathodic protection systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.