Vacuum-type circuit interrupter with an improved contact with axial magnetic field coil
US4260864A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/6644
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved vacuum-type circuit interrupter has arc contacts which have integral axial magnetic field generating means as part of the arc contact. The axial field generating means comprises a plurality of partial coil turn portions which form an effective single turn coil disposed between a supporting plate and an arcing contact portion. The coil turns are electrically in series between the conductive support rod lead-in and the arcing contact perimeter portion. The supporting plate and a plurality of support pins, each of which are of high strength, low conductivity material support the partial coil turn portions and the arc contact without diverting substantial current from the coil turn portions. The axial magnetic field generating means may be structurally a part of both contacts or only one of the contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.