Patent · US Active

Permanent magnet rotor

US7573169B2 · kind B2 · utility

6Cited by

3References

18Claims

0Family size

Assignee

Buehler Motor GmbH · DE

Inventors

Olai Ihle · Eckental, DE
Thomas Peterreins · Nuremberg, DE
Helmut Schmidt · Riegelsberg, DE
Armin Suttner-Reimann · Schwabach, DE

Key dates

Filing date	Apr 27, 2007
Grant date	Aug 11, 2009
Priority date	—
Expiry date	May 28, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A permanent magnet rotor having a shaft, a hollow cylindrical permanent magnet and an elastic connecting medium between the shaft and the permanent magnet. The permanent magnet is arranged co-axially around the shaft to ensure that the permanent magnet is mounted securely, that it is not damaged during large temperature fluctuations, and that it is not deflected impermissibly from the axis of rotation in case of heavy radial load. A simple installation process uses a mechanical connection between the shaft and the permanent magnet. This task is performed by virtue of the fact that an elastic connecting medium is arranged along the periphery of the shaft at several first areas in which the distance between the shaft and the permanent magnet is enlarged. These first areas are separated from the second areas in which the distance between the shaft and the permanent magnet is minimized but not zero.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.