Metal-graphite brush
US6755882B2 · kind B2 · utility
6Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Nov 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brush body 4 of a metal-graphite brush 2 is composed of a Pb-less commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite, copper, the metal sulfide solid lubricant and Pb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.