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US 5,434,549 AGranted
Moving magnet-type actuator
AssigneeTDK Corporation
InventorsYasuyuki Hirabayashi, Takatoshi Oyama, Hiroyuki Sohno, Sigeo Saito
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Abstract
In a moving magnet type actuator, a magnet moving body including at least two permanent magnets of which same poles are confronting each other and an intermediate magnetic substance. The magnet moving body is movably arranged inside at least three coils. The at least three coils are connected so that current flows in different directions with a zone between the permanent magnets as a boundary. Whereby thrust and efficiency of the moving magnet type actuator is improved.
Claims16
A moving magnet-type actuator comprising:
- a magnet moving body including at least two permanent magnets and an intermediate magnetic substance interposed between said permanent magnets, the same poles of said permanent magnets confronting each other;
- and
- at least three coils being connected to flow current in different directions with a zone between magnetic poles of the permanent magnets as a boundary;
- wherein said magnet moving body is movably arranged inside said coils.
1 more element
Dependencies are inferred from the claim text.