Transverse field activated magnetostrictive motor
First Claim
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1. A transverse field activated magnetostrictive motor, comprising:
- a magnetostrictive member having a direction of motion transverse to its principal orientation axis;
a reaction surface mechanically coupled to said magnetostrictive member; and
means for providing a travelling magnetic field sequentially along said magnetostrictive member, said field having a field component parallel to the principal orientation axis of said magnetostrictive member to sequentially, locally decouple said member from said reaction surface to move said member in the direction of motion of the travelling field in relation to said surface.
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Abstract
A transverse field activated magnetostrictive motor including a magnetostrictive member having a direction of motion transverse to its principal orientation axis, and a reaction surface mechanically coupled to the magnetostrictive member. A travelling magnetic field with a field component parallel to the principal orientation axis of the magnetostrictive member is provided and moved sequentially along the magnetostrictive member to sequentially, locally, decouple the member from the reaction surface to move the member in the direction of motion in relation to the surface.
46 Citations
10 Claims
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1. A transverse field activated magnetostrictive motor, comprising:
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a magnetostrictive member having a direction of motion transverse to its principal orientation axis; a reaction surface mechanically coupled to said magnetostrictive member; and means for providing a travelling magnetic field sequentially along said magnetostrictive member, said field having a field component parallel to the principal orientation axis of said magnetostrictive member to sequentially, locally decouple said member from said reaction surface to move said member in the direction of motion of the travelling field in relation to said surface. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A rotary magnetostrictive motor, comprising:
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an annular magnetostrictive member having at least one gap and adapted for rotary motion; a reaction surface mechanically coupled to said magnetostrictive member; a rotary member coupled to said magnetostrictive member for providing rotary motion from said magnetostrictive member; and means for providing a travelling magnetic field sequentially around said annular member, said field having a field component parallel to the principal orientation axis of said magnetostrictive member to sequentially, locally decouple said member from said reaction surface to rotate said magnetostrictive member and said rotary member. - View Dependent Claims (9)
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10. A motor providing rotational force comprising:
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a magnetostrictive element orientated with its principal orientation axis transverse to its intended direction of motion; means for constricting said magnetostrictive element in a direction transverse to the direction of motion; and means for moving said magnetostrictive element in the direction of motion including means for providing a traveling magnetic field along said magnetostrictive element, said traveling magnetic field having a field perpendicular to the intended direction of motion.
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Specification