Patent · US Expired

Electric machine comprising a permanent magnet

US7768168B2 · kind B2 · utility

17Cited by

18References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Joerg Aschoff · Laufenburg (Baden), DE
Thomas Lott · San Mateo, US
Andreas Wehrle · Durbach, DE
Gerd Walter · Schrobenhausen, DE

Key dates

Filing date	Feb 20, 2004
Grant date	Aug 3, 2010
Priority date	—
Expiry date	Apr 25, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH02K1/2733
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The present invention relates to an electrical machine having a rotor, a stator, and a permanent magnet located on the rotor. The permanent magnet is embodied essentially as a hollow cylinder with axial and/or radial contact faces and is secured to the rotor at the axial and/or radial contact faces by means of retaining elements; the permanent magnet is elastically supported in the axial direction (X-X) and/or the radial direction of the rotor by means of the retaining elements.

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