Arc interrupter
US4752659A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1987 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Feb 27, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The rating of an arc interrupter is improved by having a movable contact assembly, which is engageable with and completely disengageable from a fixed contact in make and break positions, respectively, consisting of two main current carrying members the first of which is the last part of the assembly to disengage from the fixed contact during an opening operation. The delay in disengaging the first contact member from the fixed contact can be achieved in several ways. For example, the geometry of the first contact member can be different from the geometry of the second contact member (by the provision of an arcing tip); by the provision of a lost-motion mechanism; or by the provision of an auxiliary contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.