Method of making a carbon commutator assembly
US6634082B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Dec 21, 1998 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Dec 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49144
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for making a carbon commutator assembly by forming an annular carbon cylinder of a conductive carbon composition and metalizing an inner surface of the carbon cylinder by bonding a first layer of metallic material to the inner surface of the carbon cylinder. A metallic substrate is soldered to the metalized inner surface of the carbon cylinder and an insulator hub is disposed in a position supporting the metallic substrate and carbon cylinder. The carbon cylinder and substrate are then segmented by forming radial interstices through the carbon cylinder and the metallic substrate thus forming a carbon/metal commutator array comprising electrically isolated carbon/metal commutator sectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.