Intercalated graphite containing electrical motor brushes and other contacts
US4799957A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor brush or other electrical contact fabricated with intercalated graphite exhibits improved electrical conductivity, strength and performance when compared with electrical brushes made with non-intercalated graphite or with carbon. Such contacts may be formed by filling a mold of the appropriate shape with intercalated graphite powder and applying sufficient pressure and heat to produce a coherent mass. The ability of intercalated graphite powder to be compacted in such a fashion leads to economic methods of manufacturing electrical contacts. The properties of these contacts may be further improved by the incorporation of metal powder, organic polymers or ceramic powders into the intercalated graphite prior to pressing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.