Switch device having an insulating screen inserted between the contacts during breaking and means for shearing the arc between this screen and an insulating wall
US4562323A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1984 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Feb 3, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch device is provided comprising means for controlling the separation of the contacts and for inserting an electrically insulating screen between the contacts during opening thereof, said screen cooperating with an electrically insulating surface formed by one of the walls of a substantially closed arc chamber, for shearing the arc between the contacts, the control of the movement of the screen being obtained by propulsion means essentially separate from those causing the separation of the contacts, while the whole is arranged so that substantially complete shearing of the arc is obtained before it has had time to stabilize itself, substantially total sealing being obtained between the screen and said surface when they are in abutment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.