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High capacity disk drive with two stator windings

  • US 6,005,747 A
  • Filed: 12/01/1997
  • Issued: 12/21/1999
  • Est. Priority Date: 07/26/1996
  • Status: Expired due to Term
First Claim
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1. A hard disk apparatus comprising in combination:

  • a base plate;

    a top plate spaced from and generally parallel to said base plate by a peripheral housing around at least a portion of said base plate;

    at least one planar magnetic recording disks contained with said housing, each said disk having a magnetically recordable material on upper and lower surfaces thereof and rotatably supported from said base plate and said top plate with said housing by a dual stator spindle motor for rotation of said disk about a first axis normal to the plane of said disk; and

    at least one transducer head positioning actuator arm assembly supported with said housing for rotation of at least one elongated actuator arms about a second axis parallel to and spaced from said first axis;

    said motor having a stationary spindle on said first axis fastened to said base plate and to said top plate, a first stator assembly concentric to said spindle fastened to said base plate, a second stator assembly fastened to said top plate, and a motor hub rotatably mounted on said spindle for supporting said disks.

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