Electrical switch
US3992600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1975 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Jul 28, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/307
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical switch comprising a drive mechanism for moving a switch component at a pre-selected variable speed. A movable additional mass is connected at a drive branched-off the drive mechanism of the moved switch component, said branch drive possessing a transmission ratio which is variable as a function of the position of the moved switch component. PAC BACKGROUND OF THE INVENTION The present invention relates to a new and improved construction of an electrical or electric switch having a drive mechanism for moving a switch component at a speed which varies in a pre-selected manner. For instance when separating the contacts of certain switches it can be necessary to displace the moved contact, i.e. the moved switch component at a variable speed in order to take into account the different requirements regarding the cut-off or separation operation e.g. the extinguishing of the arc and the gentle slowing down during as rapid as possible switching operation. In order to be able to cope with the foregoing there have already been used drives (for instance Maltese cross drives or elliptical gear drives) possessing a transmission ratio which varies depending upon the relative position…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.