Magnetic circuit and method of applying magnetic field

Details Magnetic circuit and method of applying magnetic field Magnetic circuit and method of applying magnetic field

2007-08-09

2010-10-26

Enad, Elvin G (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

C428S827000

Reexamination Certificate

active

07821366

ABSTRACT:
In a magnetic circuit for providing magnetic anisotropy in the in-plane radial direction of a soft magnetic under layer, magnets for perpendicular magnetization are respectively provide on the north and south poles of a magnet for horizontal magnetization. When magnetic circuits configured thus are stacked in a plurality of stages, a magnetic field (air-gap magnetic field) formed in a gap between the magnetic circuits is superimposed by magnetic fields from the magnets for perpendicular magnetization as well as a magnetic field from the magnet for horizontal magnetization (in-plane magnetization). The pole faces of the magnets for perpendicular magnetization are disposed closer to the gap between the magnetic circuits, so that a stronger magnetic field can be formed in the gap.

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Japanese Notice of Reasons for Rejection dated Nov. 27, 2009 from corresponding Japanese Patent Application No. 2006-217814, and an English language translation of a section thereof, 4 pgs.

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