Electromagnetic contactor
US4616203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1984 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Dec 3, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/342
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic contactor in which at least one pair of contacts which disengage from each other to interrupt a current are provided in an arc-extinguishing chamber defined by a partition wall of electrically insulating material. An absorbing member of porous metal is provided on the inner surface of the partition wall to absorb molten metal particles which are formed by arcing at the time of disengagement of the contacts. A shield plate of electrically insulating material is provided on the inner surface of the absorbing member, and through-holes are formed in the partition wall of the arc-extinguishing chamber and the shield plates in such a manner that the through-holes of the partition wall are non coincident in position with those of the shield plate so that the absorbing member is protected from damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.