Armature shaft retainer
US6707198B1 · kind B1 · utility
4Cited by
8References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1999 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Apr 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S384/903
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An armature shaft for a motor of a power tool has a shaft with two ends. A commutator is on the shaft. At least one bearing is on the shaft adjacent the commutator end of the shaft. The bearing has a central bore sized to balance the shaft during rotation. Also, a central bore in the bearing has an enlarged diameter portion. A retainer is fixed on the shaft to retain the bearing on the shaft. The retainer is positioned within the enlarged bore portion of the bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.