Brushless direct current motor system
US4698542A · kind A · utility
56Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1985 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Nov 18, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a brushless direct current motor system that includes an outer rotor receiving a load member such as a fan wheel having a plurality of blades. An axial extension of the rotor functions as a drive boss whose diameter is independent of the diameter of the motor stator core and is step-wise smaller in diameter at its outer closed end than at its inner opened end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.