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Disk storage device

  • US 6,195,226 B1
  • Filed: 04/01/1998
  • Issued: 02/27/2001
  • Est. Priority Date: 04/01/1997
  • Status: Expired due to Term
First Claim
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1. A brushless DC motor in combination with a load member, the combination comprising:

  • a generally flat stator defining an axis and having a plurality of windings disposed thereon which are concentric with said axis and a rotor mounted for rotation about said axis, said rotor having at least one magnetically conducting member spaced from said windings, said at least one magnetically conducting member having a first planar portions and inner and outer leg portion generally transverse to said planar portion forming inner and outer opposingly oriented axially projecting rim portions and defining a generally cup-shaped configuration, said rotor including a permanent magnetic member disposed on said at least one magnetically conducting member at said planar portion radially off-set of said leg portions, said motor defining at least one radially extending planar air gap between adjacent surfaces of said permanent magnetic member and said stator; and

    a load member other than a rigid magneto storage disk, said load member being operatively engaged with said rotor by a hub.

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