Encapsulated outer stator isolated rotor stepper motor valve assembly
US8053941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2008 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Jan 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/1672
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor assembly includes a rotor rotatable about an axis and a stator spaced radially away from the rotor. An isolation housing, configured to permit magnetic flux to flow therethrough between the rotor and the stator, is disposed between the rotor and the stator and defines an internal rotor chamber, in which the rotor is located. The isolation housing fluidly isolates the internal rotor chamber from the stator. An encapsulating cover is provided that radially and axially surrounds the stator. The cover is formed of a resin material and bonds the stator to the isolation housing to prevent relative movement therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.