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. 13, 1986
Filed:
Jun. 05, 1984
Applicant:
Inventor:
Carl J Heyne, Hampton Township, Allegheny County, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310156 ; 310 42 ;
Abstract
A permanent magnet rotor for high speed motors and generators is constructed to minimize tensile stress on the magnet material by preloading the material with a radially inward compressive force. In the two-pole configuration, this force is provided by wedges inserted into a dovetail connection between a pole piece and a nonmagnetic support structure. In a configuration having four or more poles, drive wedges are inserted between a magnetic pole piece and a retaining wedge to produce a compressive force on bar magnets which produce a circumferentially oriented magnetic field.