Cathodic corrosion protection with current limiter
US10633746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Oct 29, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a method for cathodically protecting and/or passivating a metal section in an ionically conductive material such as steel reinforcement in concrete or mortar, an impressed current or sacrificial anode communicates ionic current to the metal section and a storage component of electrical energy which can be a cell, battery or capacitor is provided as a component of the anode. The storage component can have replacement energy introduced by re-charging or replacing the component from an outside supply. Typically the cell or storage capacitor has an outer case which carries an anode material as an integral outer component. A mechanical clamp is provided to attach the assembly to a rebar. A current limiter is provided which prevents excess current draining the supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.