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:
Jan. 02, 2001
Filed:
Dec. 18, 1998
Applicant:
Inventor:
Phillip William Eckels, Florence, SC (US);
Assignee:
General Electric Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/320 ;
U.S. Cl.
CPC ...
G01R 3/320 ;
Abstract
A vibration cancellation system for a magnetic resonance imager superconducting C-shaped magnet includes a vibration sensor at a remote end of the separated pole pieces to provide a vibration signal which is phase inverted and converted to an opposing force by a magnetoresistive actuator connected across the support member between the opposite ends of the pole pieces to cancel vibrations which would otherwise adversely affect the homogeneity of the magnetic field in the imaging region of the magnet.