Eddy current retarder control device
US3956722A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Nov 21, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H50/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device for an eddy current retarder having a plurality of energizing windings comprises an insulating support carrying a plurality of connecting terminals for connection to the retarder windings and a junction terminal for connection to one pole of a power supply. A plurality of contactors are provided for controlling the energizing of the retarder windings, each contactor corresponding to a connecting terminal and comprising first and second fixed contact members, a bridge contact co-operating with the first and second fixed contact members, and a pull-on contactor winding controlling the bridge contact. A first contact plate connects the first contact member of each contactor to the corresponding connecting terminal and a second common contact plate connects the second contact members of the contactors to the junction terminal. Each contactor winding is connected to a respective control terminal which is connected to a control selector for consecutively energizing the control terminals. The insulating support has a raised platform disposed between two oppositely directed flanges which extend parallel to the platform and are downwardly offset therefrom. The contactor win…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.