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:
Sep. 15, 1981
Filed:
Dec. 19, 1979
Applicant:
Inventor:
Dieter Kullmann, Langenzenn, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 61 ; 62 55 ; 62505 ; 277 15 ; 285 47 ; 285D / ;
Abstract
A coolant connecting head for an electric machine which contains a rotor with a superconducting winding, the head including a device for feeding a coolant from a non-rotating coolant line part into a rotating coolant line part, with at least one sealing device for sealing a space forned between these line parts with a pre-determined pressure dependent leakage rate in which, for sealing off the interspace, a further sealing device with an adjustable seal gap formed between the sealing surfaces thereof is provided so that, during the cooling down phase of the winding, the coolant leakage rate can be kept low with this further sealing device.