Brush and commutator motor having brush device using the same
US5387832A · kind A · utility
7Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49119
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A binded carbon brush includes a brush main portion formed mainly of carbon, and an electric conductor formed by a material, such as a copper powder, having an electric resistivity lower than that of the brush main portion and extending along a main current direction of the brush. In the cross section of the brush perpendicular to the main current direction, the diameter or the vertical and horizontal sizes of the conductor is so set as to be smaller than both the vertical and horizontal sizes of the brush main portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.