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:
Aug. 23, 2005
Filed:
Nov. 21, 2003
Ronald Dean Watkins, Niskayuna, NY (US);
Harvey Ellis Cline, Schenectady, NY (US);
Douglas Arthur Kelley, Rockville, MD (US);
Ronald Dean Watkins, Niskayuna, NY (US);
Harvey Ellis Cline, Schenectady, NY (US);
Douglas Arthur Kelley, Rockville, MD (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A matrix coil for generating a variable magnetic field is provided, including a plurality of loops arranged in a series so as to have a substantially common axis and segmented into at least one arc-shaped segment, a variable current source for each of the arc-shaped segments, and a controller. The controller is configured to selectively vary an amount of current provided to each of the arc-shaped segments by the variable current sources so as to achieve a variable base field, one or more variable gradient fields, and one or more variable second order shim fields.