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:
Nov. 09, 2004
Filed:
Oct. 10, 2000
Alan G. Jack, Northumberland, GB;
Barrie Mecrow, Tyne and Wear, GB;
Öystein Krogen, Höganäs, SE;
Höganäs AB, Höganäs, SE;
Abstract
A stator ( ) for an electrical induction machine comprises at least two stator sections ( ) at two different axial positions, each section having a plurality of circumferentially separated, radially extending teeth ( ) and each tooth having a single winding. The stator sections are mutually phase-shifted so as to reduce the effect of other harmonics than the working harmonics. In a stator having two separated stator sections, these are physically phase-shifted by 180° electrical±an angle related to skew, and then have their electrical supplies also shifted by 180° electrical.