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. 06, 2001
Filed:
Sep. 23, 1998
Applicant:
Inventor:
Wolfgang Stautner, Pottle Close, GB;
Assignee:
Oxford Magnet Technology Limited, Oxon, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25B 9/00 ;
U.S. Cl.
CPC ...
F25B 9/00 ;
Abstract
Cryostat systems comprise first and second liquid interconnected helium baths, and a magnet structure which is immersed in one of the baths. The liquid helium is cooled by means of a pumped refrigeration means. The pumped refrigeration means is replaced with a pulse tube refrigerator which can be located directly within the two baths. The pulse tube refrigerator has a “cold finger” having cold and warm ends. The cold end extracts into the bath housing the coil structure and has heat exchange connected thereto. The pulse tube refrigerator can also serve to cool the radiation shields.