Vacuum circuit breaker with weldable copper switch contacts
US12068118B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2020 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | May 4, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2001/0205
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for producing an electrical switch contact arrangement for a vacuum circuit breaker includes the following steps: a) providing two electrical contact pieces made of copper or a copper alloy; b) coating the electrical contact pieces with aluminum or an aluminum alloy, the coating of the contact pieces taking place by means of a cold gas spraying method; c) welding each of the sides coated in method step b) to a current transfer contact; and d) arranging the units obtained in method step b) inside the vacuum circuit breaker. There is also described an electrical switch contact arrangement for a vacuum circuit breaker with the contact pieces produced by the method according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.