Patent ID: 7119465

Claim:
A magnetic suspension bearing comprising: an outer enclosure made of a magnetic conducting material, enclosing a plurality of magnets, wherein each magnet has a pole mounted in the outer enclosure and another pole emerged out of the outer enclosure; an inner enclosure made of a magnetic conducting material, enclosing a plurality of magnets, wherein each magnet has a pole mounted in the outer enclosure and another pole emerged out of the outer enclosure; an outer lid made of a magnetic shielding material, provided on one side of said outer enclosure for covering said outer enclosure to isolate the magnetism of the magnets; and an inner lid made of a magnetic shielding material, provided on one side of said inner enclosure for covering said inner enclosure to isolate the magnetism of the magnets, wherein the magnets of the outer and the inner enclosures are corresponding to each other to form a plurality of pairs of magnets enclosed therein, each magnet pair has two emerged poles with same magnetism facing to each other; wherein said magnets in said inner enclosure and said magnets in said outer enclosure are stacked up and down staggeringly with a gap remained between each facing magnet pair so that when an upper magnet pair has the magnet in the inner enclosure emerging longer than that in the outer enclosure, vice versa for an lower met pair.