Remote switch contact quality maintenance
US9466444B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 2014 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | May 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/052
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for maintaining integrity of a switch contact includes a first resistor-capacitor circuit, a second resistor-capacitor circuit, and a control switch. The first resistor-capacitor circuit is connected to an output of the switch contact and includes a first resistor and a first capacitor. Upon closing of the switch contact, a first wetting current flows through the switch contact. The second resistor-capacitor circuit includes a second resistor and a second capacitor. The control switch is connected between the output of the switch contact and the second resistor-capacitor circuit and is selectively closable to generate a second wetting current through the switch contact. The control switch may be operated as needed to maintain the integrity of the mechanical switch contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.