Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Reexamination Certificate
2005-04-26
2005-04-26
Barrera, Ramon M. (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
Reexamination Certificate
active
06885267
ABSTRACT:
An magnetic-field-generating apparatus comprising permanent magnet segments arranged to form a ring-shaped magnetic circuit having a center hole; adjacent permanent magnet segments having such different magnetization directions that their magnetization directions successively change along a circumferential direction of the magnetic circuit; a basic magnetization phase angle θ between the magnetization directions of the adjacent permanent magnet segments being 720/N (°); and a magnetization direction of at least one permanent magnet segment in an essential unit obtained by circumferentially dividing the ring to ¼ being deviated from the basic magnetization phase angle θ by such a deviating angle that a uniform magnetic flux flows in one direction along a diameter of the center hole.
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Kikuchi Keiko
Kuriyama Yoshihiko
Barrera Ramon M.
Hitachi Metals Ltd.
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