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. 27, 1990
Filed:
Aug. 23, 1989
Applicant:
Inventor:
Denis J Bisantz, Chagrin Falls, OH (US);
Assignee:
Lucas Aerospace Power Equipment Corporation, Maple Heights, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310154 ; 310 42 ; 310 91 ; 310214 ; 310258 ;
Abstract
A stator assembly for a d.c. electric motor/generator has a pair of permanent magnet segments located on the interior surface of the yoke. The magnet segments are held in place by a pair of wedges which are attached to the yoke. The wedges are tapered inwardly and the magnet segments are tapered outwardly to hold the magnet segments in place against the interior surface of the yoke. The tapered magnet segments also reduce cogging torques produced on the armature due to the gradual fall off of the magnetic flux at the tapered side edges of the magnet segments.