Electrolytic metal recovery system
US5310466A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1993 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Feb 4, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C7/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The system is operable in either a standby mode, having associated with it a predetermined standby current level, or a plating mode, having associated with it a predetermined plating current level. The system also has associated with it a cut-off current level at which the system is transferred from the plating mode to the standby mode, and a come-on current level at which the system is transferred from the standby mode to the plating mode. A variable voltage generator impresses a voltage across the electrolytic solution, and this voltage is monitored by a microcontroller. The voltage for each mode is the voltage which will produce the predetermined current for that mode. When the microcontroller determines that the voltage has remained stable, that is, with a deviation less than .+-.5% for a predetermined period of one minute, then the microcontroller will provide a signal to the voltage generator to initiate a change of mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.