Electrical switching device
US5981893A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Sep 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This switching device has a contact arrangement which is equipped with erosion-resistant contacts and comprises at least one contact which moves along a central axis (2) and at least one mating contact which is provided for receiving the moving contact. One of the two contacts has a finger cage (25) which is provided with individual, sprung contact fingers (13) which are spaced apart from one another by radial slots (26) extended in the direction of the central axis (2). Means are provided which prevent the side edges (29) of the contact fingers (13) being able to touch in the region of the contact surfaces (27) in the front part of the contact fingers (13) when said contact fingers (13) are drawn together in the direction of the central axis (2) , such that welding of the edges (29) of the contact fingers (13) cannot occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.