Metal-graphite brush
US6949863B2 · kind B2 · utility
1Cited by
7References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 24, 2002 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | May 3, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal-graphite brush comprises a brush body which is made by mixing and molding metal powder and graphite powder. 2 mg to 30 mg as amounts of phosphate ion of at least one of phosphoric acid and a phosphate compound is added to 1 g of the brush body of the metal-graphite brush.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.