Motor/generator with separated cores
US6455976B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2000 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Dec 2, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor/generator is provided with a stator (14) and rotors (2, 3). The stator (14) comprises a plurality of cores (11, 12) arranged on a circle. Each core (11, 12) has a base (11A, 12A) of a trapezoidal cross-section which increases a width in a direction away from the center of the stator (14). Deformation of the cores (11, 12) towards the center of the stator (14) is limited by retaining plates (18) each of which is engaged with the bases (11A, 12A) of adjacent cores (11, 12). The retaining plates (18) are formed to have a trapezoidal cross-section which increases a width in a direction towards the center of the stator (14). Rings (21, 22) are press fitted to an inner side of the both ends of the retaining plates (18). Preferably a reinforcing ring (25) is provided to support the inner periphery of the retaining plates (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.