Motor compensating spring
US6300699A · kind A · utility
4Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1999 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Oct 20, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor having a rotatable shaft centrally located within a cylindrical stator bore in a housing. A first retaining ring engages the shaft, and a rotor stack is supported axially slidably on the shaft. A second retaining ring engages the shaft above the rotor stack and is positioned a distance above the rotor stack to allow for free thermal expansion of the rotor stack. A spring locates between one of the retaining rings and the shaft to bias the rotor stack against the other retainer ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.