Switch with sequentially operated contracts
US6046419A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1999 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Feb 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for turning an electric motor on and off implements an expedient instantaneous turn-on or turn-off switching operation in which contact bridges are released for closing or pushed open by means of a spring-operated over-center device. Pivoting elements are rotated by means of the switching slide via their articulated legs such that, when the dead-center position, which is located between the axes of the pivoting elements, is overcome, one pivoting element axis is shifted in a quick-action motion. As a result of the contact bridge control levers, which are provided in different angular positions on the respective pivoting elements, a sequential switching of two contact bridges can be implemented such that initially the first contact bridge and then the second contact bridge are released for closing under the action of the contact closing spring while for opening initially the second and then the first contact bridge may be pushed open in opposition to the contact closing spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.