Recording head suspension utilizing superconductor means

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k


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360 75, 360105, H01B 1200, G11B 2102, G11B 2122, G11B 554




In a disk file data storage device wherein a radially movable recording head operates to write/read data relative to a recording disk, an electrically energizable superconductor magnetic suspension system is provided for supporting the head in close flying proximity to the surface to the disk's flat recording surface. The head is force biased away from the recording surface by operation of a spring force. The magnetic suspension system includes a superconducting member and a coil member. The superconducting member and coil member that are mounted in confronting relation, such that electrical energization of the coil member produces a magnetic mirror or Meissner force in opposition to the spring force. Variable energization of the coil member operates to support the head at a controlled flying distance from the recording surface. A stack of disks having a plurality head means and a plurality of superconductor/coil pairs, one pair associated with each recording surface, is disclosed. Operation of the storage device within an evacuated housing is described.

patent: 4814907 (1989-03-01), Goor
patent: 4843504 (1989-06-01), Barnes


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