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. 10, 1979
Filed:
Sep. 08, 1976
Applicant:
Inventor:
Franz Spirk, Berlin, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 65 ; 310194 ; 310214 ;
Abstract
An excitation winding arrangement is provided for a synchronous electric machine having a rotor with shoeless, salient poles wherein the excitation windings are secured by slot wedges in gaps defined by the poles. Theexcitation winding arrangement includes coils which define the excitation winding and are formed by flat conductors. The flat conductors, either singly or in bundles, are held in spaced relation by respective combs at the bottom of the slots and under the slot wedge to form cooling ducts to achieve good air cooling of the excitation winding in the region of the pole gap.