Vacuum valve
US6376791B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1997 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Jun 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/0206
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for improving flux density in a vacuum valve, includes producing, with a vacuum valve, an axial magnetic field parallel to an arc generated between a movable and a stationary electrodes facing each other, and adjusting a magnitude of an axial flux density between the electrodes to increase gradually from a center area of the electrodes toward a circumferential area of each electrode. A point gives a maximum value (Bp) of the axial flux density at a location of and beyond 70% of a radius from the center of each electrode, and the maximum value (Bp) of the axial flux density in a radial line from the center to a circumferential end to be 1.4 to 2.4 times greater than a flux density of the center Bct of each electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.