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:
Mar. 14, 1989
Filed:
Aug. 15, 1986
Millis V Parshall, Erie, PA (US);
Marathon Electric Manufacturing Corporation, Wausau, WI (US);
Abstract
A generator exciter for an A.C. sychronous alternator has a rotor secured to the alternator shaft and a compact high power stator. The stator core is a square laminated core. Eight straight sided poles terminate in a concave end defining a circular rotor opening. A first set of four poles is circumferentially spaced to the diametrical four sides of the core. The poles are a minimum length, and of a width approximately equal to twice the depth of the outer square side portions. A second set of four poles are located at the four corners of the core. The second poles are the same width as the first poles but are significantly longer. Each square corner portion significantly enlarges the outer connecting portion and includes a core mounting opening. Precision prewound coils of the same width and of a length slightly less than the pole length are placed on each pole. A generally stepped construction with a slight enlargement between adjacent poles defines recesses of the width of the coils. The opposed side walls of the poles having a notch adjacent the outer ends. Locking wedges interposed between the poles having locking edges in the opposed notches and curve inwardly into clamping engagement with the two adjacent coil ends.