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.

Date of Patent:
Nov. 14, 2006

Filed:

Oct. 05, 2005
Applicant:

William Denis Markiewicz, Tallahassee, FL (US);

Inventor:

William Denis Markiewicz, Tallahassee, FL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An actively shielded superconducting magnet having a dipole shim coil for adjusting and fine-tuning an external or far fringe magnetic field produced by a main coil of the magnet. An active shield coil is coupled to the main coil in reverse polarity and produces a magnetic field when energized that opposes the far fringe field to substantially reduce the far fringe field. The dipole shim coil is electrically isolated from the active shield and main coils of superconducting magnet, and produces a magnetic field when energized that provides for the fine adjustment of any residual far fringe field.


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