Two pole permanent magnet rotor construction for toothless stator electrical machine
US4667123A · kind A · utility
42Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1985 |
| Grant date | May 19, 1987 |
| Priority date | — |
| Expiry date | Nov 20, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53161
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A two pole permanent magnet rotor utilizes a single cylindrical two pole permanet magnet mounted between two end pieces and surrounded by a retaining hoop. The cylindrical two pole permanent magnet, which is made of high energy product material, is "straight through" diametrically magnetized to provide a sinusoidal air gap flux distribution which eliminates losses due to harmonics. The cylindrical two pole permanent magnet may be made of a plurality of smaller magnet blocks which are stacked and machined to form a cylindrical configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.