Contact assembly having a current-dependent force increasing the contact force
US4636762A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Aug 28, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2001/5827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A contact assembly for electrical circuit breakers has a contact lever and a lever support with the contact lever mounted thereon in an articulate fashion. The support lever is flexibly positioned around a fixed pivot bearing by a drive linkage device for on- and off-switching cycles. A pressure lever is used to introduce a current-dependent force onto the contact levers in order to increase the contact force. The pressure lever is similarly flexibly mounted onto the lever support. The contact lever and the pressure lever operate jointly via their working surfaces which permit a conveyance of force in terms of an increase of the contact force. When switching on the contact assembly, the pressure lever is decoupled from the contact lever so that the tendency to bounce is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.