Patent ID: 7564152
Filing Date: 2009-07-21
Classification: H01F,H01L

Abstract:
1. A method for producing magnetostrictive contraction, the method comprising: applying longitudinally-axially directed tension to an elongate structure so that the magnetization of said elongate structure tends generally to be longitudinally-axially directed, said elongate structure being characterized by an elongate structure longitudinal axis; while said longitudinally-axially directed tension is being applied to said elongate structure, applying a transversely directed magnetic field to said elongate structure so that said magnetization tends generally to be transversely directed, said transverse direction being relative to said longitudinal-axial direction; said applying of said transversely directed magnetic field including conducting longitudinally-axially directed electrical current through at least one elongate electrical conductor, each said elongate electrical conductor being characterized by an elongate electrical conductor longitudinal axis, each said elongate electrical conductor being placed so that: wherein longitudinally-axially directed magnetostrictive contraction of said elongate structure is associated with the directional change of said magnetization from said longitudinally-axially directed general tendency to said transversely directed general tendency.