Marine organism prevention system for structures in seawater
US6511586B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 13, 2001 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Apr 13, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/36
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An antifouling system (20) for a structure exposed to seawater has an anode forming member (4) bonded to the seawater-exposed surface to be wetted with seawater (15) of the structure via an insulating adhesive (6). The anode forming member 4 is coated with an electrical catalyst film 3 of an electrochemically active and stable electrical catalyst. A conductive member (8) is disposed so as to be wetted with seawater (15). An external dc power supply (7) has a positive terminal (7a) connected to the anode forming member (4) and a negative terminal (7b) connected to the conductive member (8). The external DC power supply (7) is provided with a built-in automatic potential controller (7c) that controls the potential difference between the positive terminal (7a) and the negative terminal (7b) such that oxygen can be generated in seawater suppressing the generation of chlorine in seawater. Even if a rubber lining coating a metal part of the structure is broken, abnormal corrosion of the metal part corresponding to a damaged part of the rubber lining can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.