Arc control device for vacuum bulb
US9460874B2 · kind B2 · utility
0Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | May 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/6644
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To control the arc that forms during cut-off in a vacuum bulb, a contact device makes it possible to inflict a rotational motion on the arc, while keeping the arc diffuse. The rotating diffuse arc is obtained with each of two electrodes of the contact device including a solid wafer associated with a base of petal type, the two electrodes mirroring one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.