Circuit interrupter with a magnetically-induced automatic trip assembly implementing a spring clamp
US6194982A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2000 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Jan 31, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/2472
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit interrupter including a housing, separable main contacts disposed in the housing, and an operating mechanism disposed in the housing and interconnected with the contacts. A trip mechanism is disposed in the housing and has an automatic trip assembly that selectively generates a tripping operation to cause the operating mechanism to open the contacts upon a predetermined current threshold. The automatic trip assembly includes a magnetic yoke, an armature, and an electrical terminal. The magnetic yoke has pivot supports on which are positioned pivot arms of a head portion of the armature. A clamp member applies a clamping force to the head portion of the armature in a direction to normally rotationally displace a bottom portion of the armature away from the yoke and the terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.