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US 8,476,797 B2Granted
Magnetic bearing device for supporting roll shaft
AssigneePosco
InventorsTae-In Jang, Chang-Woon Jee, Yong-Hun Kweon, Gun-Young Kim
Life of this patent
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Abstract
A magnetic bearing device includes a magnet generating a magnetic field at a protrusion formed toward a roll shaft, and a body portion supporting the magnet in one direction. The roll shaft is supported while an air gap is formed between the roll shaft and the protrusion, and both sides of the protrusion are rounded.
Claims15
A magnetic bearing device comprising:
- a magnet supporting a roll shaft while an air gap is formed between the roll shaft and a protrusion by generating a magnetic field at the protrusion formed toward the roll shaft;
- and
- a body portion supporting the magnet in one direction,
- wherein the magnet comprises an electromagnet,
- an alternating current is applied to the electromagnet, and a radial levitation force of the roll shaft and a circumferential propulsive force of the roll shaft are generated by a time varying magnetic field formed by the alternating current.
2 more elements
Dependencies are inferred from the claim text.