Electric motor, controller therefor and methods for controlling and assembling same
US5355373A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1992 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Jul 6, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49011
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A miniature electric motor is provided including stator and rotor assemblies wherein the rotor assembly has a magnet and a shaft adapted to be coupled to a load to move the load and wherein the magnet is positioned about the stator assembly for rotating without the stator assembly. The stator assembly includes a stator having a plurality of branches made of a magnetic material angularly positioned with respect to each other and a plurality of coils wound about their respective branches. The shaft extends through the stator and also, preferably, through a brake which supplies pressure to the rotor assembly to thereby supply a braking force to the rotor assembly after the load has been rotated to a desired position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.