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:
Apr. 16, 1985
Filed:
Dec. 05, 1983
Timothy J Miller, Schenectady, NY (US);
Donald W Jones, Burnt Hills, NY (US);
Gary L Kalan, Clifton Park, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A permanent magnet rotor has a north and a south pole piece each separated into two sections by a central nonmagnetic insert to reduce the quadrature flux. The pole piece sections are welded to the central nonmagnetic insert, two nonmagnetic segments are welded to either end of the north pole piece and two magnetic segments are welded to either end of the south pole pieces to form two half rings. The half rings are secured about a solid shaft of magnetic material having a central portion with a rhombic cross section. The centerline of the half rings is aligned with the diagonal of the square central portion. The half rings are bolted to one another. The sides of the shaft and the inner faces of the half rings form four apertures extending the axial length of the pole pieces. A magnet which adds no structural strength to the rotor is positioned in each of the apertures, respectively. Two of the magnets have their north seeking face adjacent the north pole piece and two of the magnets have their south seeking face adjacent the south pole piece, forming a two pole rotor.