Circuit interrupter
US4388506A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1981 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Nov 23, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The contact structure and the arc extinguisher means of a circuit interrupter are enclosed in an insulating housing of each pole and the operating mechanism is isolated from the contact structure and located outside of the housing. The housing for each pole forms an arc extinguisher amper with a detachably attached cover containing an arc extinguisher, and a contact chamber containing a contact structure in each pole. An interconnecting rod, located between the contact structure and the operating mechanism has a flange or barrier for covering an opening in the housing through which the rod extends. Upon contact separation, the electric arc increases the internal pressure within the housing, thereby rapidly effecting arc extinction. The dielectric strength between the contact structure and the operating mechanism is also greatly increased in comparison with conventional designs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.