Motor end cap with interference fit
US8283841B2 · kind B2 · utility
7Cited by
41References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2010 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Dec 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary machine (e.g., motor or generator) has end caps with plastic piloting rings that engage a stator's plastic winding frame in an interference fit, so that a rotor seated by bearings in the end caps is properly aligned with the stator. The flexibility of the plastic-to-plastic fit allows looser tolerances in comparison to machining of all-metal end caps, while the average circle of the piloting ring's outer diameter still assures proper concentricity of rotor shaft, bearings, piloting rings and stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.