Electric motor for a power tool
US10432045B2 · kind B2 · utility
7Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2013 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Oct 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor for use with a power tool includes a rotor having a body, a stator having a plurality of electromagnetic coils surrounding the rotor, an output shaft coupled to the rotor for rotation with the rotor, and a plurality of magnets positioned within the body of the rotor. The motor also includes a mechanical magnet holder coupled to at least one of the rotor and the output shaft to engage each of the plurality of magnets. The mechanical magnet holder inhibits movement of the plurality of magnets out of the body of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.