Claims
- 1. An electromagnetic machine, comprising:
a stator extending along a longitudinal axis and having an inner surface defining a rotor receipt cavity; a rotor extending along and rotatable about the longitudinal axis, the rotor being positioned with the rotor receipt cavity; a plurality of ring assemblies supported on the rotor, and a plurality of magnets circumferentially spaced about the rotor and extending through the ring assemblies, each magnet being generally parallel to the axis of the rotor.
- 2. The electromagnetic machine of claim 1, wherein rotor includes a plurality of circumferentially spaced lobes projecting radially therefrom and wherein each ring assembly includes a plurality of circumferentially spaced poles supported on corresponding lobes.
- 3. The electromagnetic machine of claim 2, wherein each of the poles of each ring assembly includes a plurality of laminated pole pieces.
- 4. The electromagnetic machine of claim 3, wherein the rotor includes first and second ends and wherein one of the plurality of ring assemblies is positioned adjacent the 20 first end of the rotor.
- 5. The electromagnetic machine of claim 4, wherein the laminated pole pieces of each of the poles of the one of the plurality of ring assemblies positioned adjacent the first end of the rotor includes a plurality of first pole pieces having a first radial thickness 25 and a plurality of second pole pieces having a second radial thickness.
- 6. The electromagnetic machine of claim 5, wherein the first radial thickness of the first poles pieces is greater than the second radial thickness of the second pole pieces.
- 7. The electromagnetic machine of claim 6, wherein the first poles pieces are positioned adjacent the first end of the rotor.
- 8. The electromagnetic machine of claim 3, wherein each of the laminated pole pieces includes a leading edge and a trailing edge which are asymmetrical.
- 9. The electromagnetic machine of claim 1, wherein the stator includes a plurality of laminated stator pieces laminated along an axis generally parallel to the longitudinal axis, the laminated stator pieces being radially spaced from the poles of the rotor assemblies.
- 10. The electromagnetic machine of claim 1, wherein the stator includes a plurality of radially extending cooling channels extending therethrough, wherein the cooling channels communicate with the rotor receipt cavity.
Parent Case Info
[0001] The present application is a divisional application of U.S. patent application Ser. No. 09/929,971 filed Aug. 15, 2001, the disclosure of which is incorporated herein by reference.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09929971 |
Aug 2001 |
US |
Child |
10408331 |
Apr 2003 |
US |