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:
Jan. 08, 2013

Filed:

Jan. 29, 2007
Applicant:

John M. Dobbs, Beverly, MA (US);

Inventor:

John M. Dobbs, Beverly, MA (US);

Assignee:

Analogic Corporation, Peabody, MA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 21/06 (2006.01); H01F 27/02 (2006.01); H01F 27/36 (2006.01); H01F 21/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

Axisymmetric solid of revolution derivable from section at FIG.is generally toroidal with electric current(s) in windingspreferably flowing circumferentially along major circle(s) during power coupling device operation. Current(s) in windings; current(s) in half-shields; and the volume of space swept out by shield airgap(s)emerge from plane of paper perpendicularly at FIG.but as these emerge therefrom they curve to follow toroidal major circle(s). Corespreferably shunt and align magnetic flux such that magnetic field lines escape therefrom primarily only in region(s) of core airgap(s) and such that magnetic flux loops lie in planes of toroidal minor circle(s). Half-shield(s)preferably have electrically conductive material(s) distributed therein as is sufficient to substantially cancel magnetic flux lines impinging thereon before effects of such impinging magnetic flux lines would reach shield airgap(s)and/or outer surface(s) of half-shields


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