Direct current motor
US7791243B2 · kind B2 · utility
3Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2008 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Sep 18, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/1166
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gear housing accommodates a worm shaft. A brush holder includes a base member and a retaining member loosely fitted to the base member. The base member is located between the gear housing and the retaining member. The retaining member retains a first brush and a second brush. The retaining member has a pair of positioning poles, and the gear housing has a pair of positioning projections. The positioning poles and the positioning projections are engaged with each other so as to prevent the retaining member from being moved in a direction perpendicular to the axial direction of the rotary shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.