Collector for an electric machine and method for its production
US4603474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | May 17, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49011
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A collector for electric machines, including a rotationally symmetrical sintered ceramic body and a plurality of radially disposed metallic segments which are separated from each other by one interspace each and which are bonded to the ceramic body via a eutectic intermediate layer. The segments are bonded to the ceramic body in accordance with the eutectic method by being surface-oxidized on their inside narrow side and radially pressed against the ceramic body with the totality being brought to the melting temperature corresponding to the metal/metal-oxide eutectic and subsequently being cooled down again. A preferred embodiment includes: copper segments on an Al.sub.2 O.sub.3 ceramic body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.