Electromagnetic contactor arc chute
US4256937A · kind A · utility
0Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1978 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Jun 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/596
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc chute for a clapper-type electromagnetic D.C. contactor having a closed off top wall with tapered and angled holes therethrough directing jets of air, caused by the arc when the contact tips separate, to the front of the arc chute thereby preventing the arc from moving directly above the contactor and as a result decreasing overhead clearance between contactors and, further improving the upper limit on fault current interruptions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.