Electrical switch
US11107642B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2020 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Mar 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The electrical switch includes a first and a second fixed contact, and a movable knife contact including at least one longitudinal pair of blades being flexibly connected to each other, wherein the blades form, in a switching event, contact with contact portions of the first and/or the second fixed contact. Opposite surfaces of the contact portions of the first and the second fixed contact include a roughened area and the inner surface of each blade includes a protruded area or opposite surfaces of the contact portions of the first and the second fixed contact include a protruded area and the inner surface of each blade includes a roughened area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.