Apparatus and method for attaching a shaft to an electric motor rotor
US6417596B1 · kind B1 · utility
13Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor in which shaft portions are welded directly to the ends of a rotor stack by friction welding, which eliminates the need for a shaft hole in the rotor stack, thus providing a rotor in which each lamination has an unstamped, solid center, and the rotor has no other bores therein. As a result, no scrap is generated and motor efficiency is improved because the rotor has no bores therein. In addition, the amount of shaft material needed is also reduced because the shaft does not extend through the rotor stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.