Read/write head-positioning apparatus for a magnetic recording d

Details Read/write head-positioning apparatus for a magnetic recording d Read/write head-positioning apparatus for a magnetic recording d

1982-03-01

1985-07-23

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 5012

Patent

active

045311692

ABSTRACT:
Head positioning apparatus for a magnetic disk drive unit (10) including a disk pack portion (12) and a head-positioning portion (14), the latter employing a linear magnetic induction motor (22) for accurately positioning an associated head (20) relative to the disk pack portion (12) while permitting efficient assembly of the head-positioning portion (14) due to the arrangement of slide bearing shafts (30, 32) on the outside of the motor (22) and the use of an adjustable lever arm (38) and a bracket (48) at respective ends of the slide bearing shafts (30, 32). Fluid bearings are used throughout, with the disk pack portion (12) employing a fluid thrust bearing (88) in a means for coupling a plurality of disks (80) to an associated drive motor (86) in order to isolate the disks (80) from axial fluctuations of the motor armature (90) along its axis of rotation and prevent damage to the disks.

REFERENCES:
patent: 4441130 (1984-04-01), Boehm et al.

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