Patent ID: 6396378
Filing Date: 2002-05-28
Classification: H01F,H01J

Abstract:
A variable tapered magic cylinder structure, comprising:an outer magnetic shell composed of a plurality of outer permanent magnetic segments encloses an internal cavity; an inner magnetic shell, composed of a plurality of inner permanent magnetic segments, is inserted within said outer shell and defines a working space within said internal cavity; said outer shell and said inner shell being axially aligned along a concentric cylindrical axis; said inner shell is magnetized to produce a first working magnetic field in said working space; said outer shell is magnetized to produce a second working magnetic field in said working space; a polar plane orthogonally intersects said concentric cylindrical axis; each of said plurality of outer permanent magnetic segments and said plurality of inner permanent magnetic segments having an increased level of intensity along said polar plane; said inner shell and said outer shell interact to generate a composite tapered magnetic field along said polar plane; said inner shell and said outer shell being moveable with respect to each other; and said composite tapered magnetic field being adjusted by moving said inner shell and said outer shell either alone or with respect to each other to produce a variable tapered magnetic field.