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:
Jul. 21, 2009
Filed:
Sep. 11, 2003
Applicants:
Gerhard Huth, Leutershausen, DE;
Rolf Vollmer, Gersfeld, DE;
Inventors:
Gerhard Huth, Leutershausen, DE;
Rolf Vollmer, Gersfeld, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The aim of the invention is to achieve a high torque yield in synchronous machines excited by permanent magnets. Said aim is achieved by using subharmonic air gap fields. The rotor comprises an induction cage as well as permanent magnets. The number of winding holes of the stator is greater than q=0.5. The number of poles of the rotor is greater than the base number of poles of the air gap field produced by the windings.