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:
Aug. 05, 1980
Filed:
Oct. 30, 1975
Applicant:
Inventor:
Dieter Kullmann, Langenzenn, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 53 ; 62505 ;
Abstract
An arrangement for cooling an electric machine such as a turbo generator having a rotor with an excitation winding which must be cooled to a low temperature, the excitation winding concentrically surrounded by a cooled damper winding in which separate cooling loops are provided for cooling the excitation winding, the damper winding and the current supply and/or discharge lines to permit the refrigeration power necessary to remove losses to be adapted to the actual losses in the machine and to be kept relatively small.