Carbon brush with at least one pressed-in stranded copper wire
US6278215A · kind A · utility
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6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2000 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Feb 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Carbon brush including at least one pressed-in stranded copper wire arranged as a plait-woven hollow stranded wire, formed from a plurality of copper strands of diameter 0.05 to 0.1 mm, and recrystallized by heat treatment. The hollow stranded wire contains at least one stiffening inner wire having a diameter of 0.1 to 0.5 mm, the diameter of the at least one stiffening inner wire being at least twice the diameter of any of the copper strands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.