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, 1978
Filed:
Apr. 23, 1976
Dietrich Lambrecht, Mulheim an der Ruhr, DT;
Erich Weghaupt, Mulheim an der Ruhr, DT;
Kraftwerk Union Aktiengesellschaft, Mulheim an der Ruhr, DT;
Abstract
In a coolant circuit for an electric machine rotor mounted on a shaft and having a superconductive excitation winding, a cold shield with a damping winding surrounding the excitation winding, as well as a coolant connecting head surrounding one end of the shaft at the excitation winding side thereof, a device for feeding coolant from a refrigerating machine through the coolant connecting head to an axial bore formed in the rotor shaft and from the axial bore to a collection chamber surrounding the shaft, coolant channels for the excitation winding disposed in the rotor, a cold shield with a damping winding surrounding the coolant channel in the rotor, a coolant outlet channel in the shaft communicating with the collection chamber, the coolant channels and the damping winding being connected to one another and connecting the axial bore formed in the rotor shaft to the coolant outlet channel, and a throttling member in the coolant outlet channel for reducing coolant outlet pressure.