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. 08, 2016
Filed:
Nov. 30, 2012
Applicant:
General Electric Company, Schenectady, NY (US);
Inventors:
Weijun Shen, Florence, SC (US);
Timothy J. Havens, Florence, SC (US);
Longzhi Jiang, Florence, SC (US);
Tesfaye K. Kidane, Waukesha, WI (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/00 (2006.01); G01R 33/34 (2006.01); G01R 33/389 (2006.01); G01R 33/565 (2006.01); G01R 33/3875 (2006.01);
U.S. Cl.
CPC ...
G01R 33/34092 (2013.01); G01R 33/389 (2013.01); G01R 33/56509 (2013.01); G01R 33/56518 (2013.01); G01R 33/3875 (2013.01);
Abstract
A magnet apparatus for a magnetic resonance imaging system, the magnet apparatus includes a vacuum vessel, a helium vessel disposed within the vacuum vessel and a thermal shield disposed between the vacuum vessel and the helium vessel. A set of passive compensation coils are disposed within the vacuum vessel or the helium vessel and used to compensate for magnetic field distortion caused by mechanical vibrations within the magnet apparatus.