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:
Feb. 15, 2005
Filed:
Aug. 04, 2004
Herbert A. Leupold, Eatontown, NJ (US);
Herbert A. Leupold, Eatontown, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A compact permanent magnet structure is provided to produce a uniform magnetic biasing field confined to an internal cavity of a cylindrical magnetic flux source which eliminates the drawbacks, shortcomings, limitations and difficulties associated with an elongated magic ring. The compact permanent magnet structure is composed of a cylindrical magnetic flux source with a cylindrical axis, a hollow central cavity, an inner diameter and a remanence perpendicular to said cylindrical axis. The ends of the cylindrical magnetic flux source are capped by a first magnetic flux source and a second magnetic flux source. The compact permanent magnet structure produces a uniform biasing field by capping the end of the cylindrical magnetic flux source with a hemispheric section of a magic sphere having a cavity diameter and shell axis equivalent to the magic ring. The cylindrical magnetic flux source can be a magic ring and the caps can either be geometric or parametric. A method for producing the uniform magnetic biasing field in a compact permanent magnet structure is also provided.