Anti-surge over-current protection device
US9112348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2013 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Jan 31, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An anti-surge over-current protection device comprises a PTC material layer, first and second conductive layers. The PTC material layer has opposite first and second planar surfaces. The first conductive layer is in physical contact with the first planar surface and comprises a plurality of first conductive members isolated from each other. The second conductive layer is in physical contact with the second planar surface, and comprises a plurality of second conductive members isolated from each other. The first conductive layer, the PTC material layer and the second conductive layer form a circuit containing first and second conductive paths. In the first conductive path, the PTC material layer forms a first series connection resistive component having at least two resistors. In the second conductive path, the PTC material layer forms a second series connection resistive component having at least two resistors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.