Programmable brush for DC motors
US6559571B1 · kind B1 · utility
4Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1997 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Nov 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a brush system for a commutated DC motor. As the brush wears, different cross-sectional shapes, at different positions, come into contact with the commutator. The center of contact for each cross-sectional shape can be different, thereby changing brush angle as wear occurs. The change in brush angle can be desirable, in order to offset other effects which occur as a result of wear. For example, motor speed can change as a result of brush wear. Changing brush angle can offset the change in speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.