Structure of DC motor with electronic commutation
US5258679A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Jul 6, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2203/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC motor having an electronic commutator including, inter alia, an annular insulating support (410) which carries at its periphery (4101) a ring (4102) which is bordered on one side by a lateral rim (4103) having a lesser diameter. The ring (4102) is arranged to define teeth (4104) having a rectangular cross-sectional shape (4106) and defining therebetween gaps (4108) which are each provided in their middle with a mushroom-shaped element (4000). Each mushroom-shaped element has a foot (4001), which is higher than the depth of the gap (4108), and a head (4002) which overhangs both the teeth (4104) which surround it and the rim (4103). The rim (4103) is provided with slits (4003) located in alignment with the feet (4001).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.