Surge protective devices
US12418175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2023 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Dec 12, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T4/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surge protective device includes a first electrical terminal, a second electrical terminal, and an overvoltage protection circuit connected between the first electrical terminal and the second electrical terminal. The overvoltage protection circuit includes a spark gap assembly between the first electrical terminal and the second electrical terminal. The spark gap assembly includes a first spark gap (SG) electrode and a second SG electrode defining a spark gap therebetween, and a trigger circuit operative to ignite a main electric arc between the first and second SG electrodes across the spark gap. The trigger circuit includes a groove defined in the second SG electrode, and a trigger member disposed in the groove. The trigger member is operative to assist formation of a trigger arc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.