Brush card assembly with RFI suppression for two or three speed permanent magnet brush motor with link wound dual commutator and dual armature winding configuration
US7119473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Nov 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brush card assembly 30 is provided for a permanent magnet brush motor 50. The motor includes a link wound, high speed side commutator 46 and an associated high speed side armature winding 44, and a link wound low speed side commutator 54 and an associated low speed side armature winding 52. The brush card assembly includes a brush card 31 including a high speed side having a positive brush 32 and a negative brush 32′ constructed and arranged to be operatively associated with the high speed side commutator 46, and a low speed side opposite the high speed side. The low speed side has a positive brush 33 and a negative brush 33′ constructed and arranged to be operatively associated with the low speed side commutator 54. The brushes are constructed and arranged with respect to the commutators to provide at least two different operating speeds of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.