Vacuum electrical switch
US5861597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1995 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Oct 16, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/6641
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vacuum switch has an elongated vacuum cartridge with a cylindrical enclosure blanked off by two end-plates, in which there are housed two arcing contacts respectively stationary and movable, and a coil designed to produce an axial magnetic field in the arc formation zone. The coil has one end arranged as a current conducting strip and an end electrically connected to one of the above-mentioned arcing contacts. The two ends of the coil are superposed and electrically connected, and a branch-off means, such as for example a magnetic circuit, is fitted between these two ends to branch off a part of the main current through the coil during breaking in order to create the axial magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.