Electric motor
US5714826A · kind A · utility
4Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1995 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Mar 3, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor is provided with especially brushes of which rear ends are cut diagonally to form acute angles at the corner edges on the backward side of the rotating direction of the armature. The brushes are maintained securely in brush holders without vibration by first and second side walls of the brush holders according to component force of pressing force applied on the slant rear ends of the brushes by pressing members, therefore the objectionable noise caused by the "stick-slip" is prevented very effectively without introducing complicated structure in the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.