Brushed electric motor
US11353015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2016 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Aug 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2211/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Brushed electric motor (10), comprising an outer case (11), two brushes and further a rotor (30) having a first inner end (31) and a second outer end (32) which is inserted within the outer case (11), the brushed electric motor (10) is usable in environments with a risk of fire or explosion or in presence of potentially explosive or flammable fluids, and comprises at least a filler element (20) made with a polymer based material which is positioned internally to the outer case (11) of said brushed electric motor (10) for minimize the free volume within the brushed electric motor (10) itself and for allow at the same time to maintain a high power and high performance characteristics of the brushed electric motor (10), by minimizing the possibility of triggering a burst or fire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.