Commutator
US7485998B2 · kind B2 · utility
0Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 2003 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Mar 5, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49011
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A commutator comprises a commutator base of insulating material, a plurality of commutator terminals, each of which has a terminal portion and a contact portion, and a plurality of carbon segments formed on the base and over the contact portions, respectively, of the terminal. Each carbon segment has an inner portion of molded (unsintered) graphite material adjacent to the base and one or more outer exposed portions, containing or formed of sintered graphite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.