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:
Mar. 13, 2012
Filed:
Jul. 18, 2007
Applicants:
Rolf Vollmer, Gersfeld, DE;
Marcus Ziegler, Rasdorf, DE;
Inventors:
Rolf Vollmer, Gersfeld, DE;
Marcus Ziegler, Rasdorf, DE;
Assignee:
Siemens Aktiengesellschaft, München, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to the invention, the torque ripple of electrical machines is supposed to be further reduced. For this purpose, it is provided to dispose the magnetic poles, for example, on the surface of a rotor in a plurality of sections (A, A) at different angles. The result are helix angles (β), which have different amounts. Also more than two different helix angles, up to a continuous course of the boundary lines (G) between the poles, can be implemented.