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:
Jul. 12, 1977
Filed:
Aug. 26, 1975
Dietrich Lambrecht, Mulheim (Ruhr), DT;
Erich Weghaupt, Mulheim (Ruhr), DT;
Kraftwerk Union Aktiengesellschaft, Mulheim (Ruhr), DT;
Abstract
Coolant circulation system for the rotor of an electric machine having a superconductive excitation winding and carried by a rotary shaft includes a radially outer cold shield surrounding the superconductive excitation winding, a coolant junction head surrounding the shaft at an end thereof adjacent the excitation winding, the coolant junction head having an inlet communicating with an axial bore formed in the shaft, means for refrigerating a coolant, means for conducting coolant from the refrigerating means through the coolant junction head to the shaft bore, means defining a collection chamber surrounding the shaft and communicating with bore means formed in the shaft for discharging the coolant from the shaft, first cooling channels located in the radially inwardly disposed excitation winding and communicating with the shaft bore, and second cooling channels located in the radially outwardly disposed refrigerating shield, the first and the second cooling channels being serially connected and being successively traversible by the same coolant conducted to the shaft bore.