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:
Dec. 28, 2004
Filed:
Apr. 19, 2002
Applicant:
Inventors:
Hermfred Gohn, Wehr, DE;
Claudio Picech, Moeriken, CH;
Ralf Rotzinger, Murg-Niederhof, DE;
Alfred Ziegler, Lenzburg, DE;
Assignee:
Alstom Technology LTD, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 3/46 ;
U.S. Cl.
CPC ...
H02K 3/46 ;
Abstract
The object of the invention is to provide improved protection for the insulation of the rotor end windings of electrical machines that is suitable in particular for electrical limit-rating machines. This is achieved by the rotor end bell ( ) consisting of steel and the retaining ring liner sheet ( ), spatially separating the end winding insulation ( ) from the rotor end bell ( ), consisting of titanium or a titanium alloy. Moreover, a lubricant ( ) with a temperature stability of >300° C. is applied between the retaining ring liner sheet ( ) and the rotor end bell ( ).