The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2011
Filed:
Dec. 19, 2007
Andreas Jöckel, Nürnberg, DE;
Thomas Schmidt, Nürnberg, DE;
Andreas Jöckel, Nürnberg, DE;
Thomas Schmidt, Nürnberg, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
A permanent magnet (PM) rotor has a plurality of partial laminated stacks that are interspaced in the axial direction at a defined distance, thereby defining radial cooling slots. Permanent magnets are arranged in every partial laminated stack in inner pockets. The dimension of every permanent magnet in the axial direction does not or only insignificantly exceed the axial dimensions of the respective partial laminated stack. During assembly, the permanent magnets can be axially pushed through the inner pockets to the respective partial laminated stack (). The rotor has a very high degree of efficiency.