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. 17, 2011
Filed:
Jun. 29, 2009
Applicant:
Michael Thoms, Bietigheim-Bissingen, DE;
Inventor:
Michael Thoms, Bietigheim-Bissingen, DE;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
H02K 16/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A synchronous permanent magnet machine for at least two rotation speeds has a single stator and at least two rotors. For each rotation speed there is provided a separate rotor with a different numbers of poles. The armature windings on the stator extend across all of the rotors and the windings are subjected to a rotating field with the same frequency.