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. 07, 2015
Filed:
Dec. 07, 2010
Applicants:
Robert A. Ackermann, Schenectady, NY (US);
Philippe A. Menteur, Niskayuna, NY (US);
Inventors:
Robert A. Ackermann, Schenectady, NY (US);
Philippe A. Menteur, Niskayuna, NY (US);
Assignee:
KONINKLIJKE PHILIPS N.V., Einhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 39/02 (2006.01); F25D 31/00 (2006.01); G01R 33/48 (2006.01); F25B 9/10 (2006.01); F25D 19/00 (2006.01); G01R 33/38 (2006.01); H01F 6/04 (2006.01);
U.S. Cl.
CPC ...
F25B 9/10 (2013.01); F25D 19/006 (2013.01); G01R 33/3804 (2013.01); H01F 6/04 (2013.01);
Abstract
When cooling a superconducting magnet for use in a magnetic resonance imaging (MRI) device, a two-stage cryocooler () employs a first stage cooler () to cool a working gas (e.g., Helium, Hydrogen, etc.) to approximately 25 K. The working gas moves through a tubing system by convection until the magnet () is at approximately 25K. Once the magnet () reaches 25 K, gas flow stops, and a second stage cooler () cools the magnet () further, to about 4 K.