Rotational driving apparatus for disks having a magnet disposed

Details Rotational driving apparatus for disks having a magnet disposed Rotational driving apparatus for disks having a magnet disposed

1996-11-12

1998-05-05

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

369263, 369264, 369270, G11B 2300, G11B 2504

Patent

active

057484066

ABSTRACT:
A rotational driving apparatus for disks includes a motor mounting base, a motor attached to the motor mounting base, a turn table made of a non-magnetic material and attached to a rotational shaft of the motor, for supporting a disk thereon, a turn table magnet disposed on the turn table, for absorbing the disk placed on the turn table, and a magnetic plate member disposed on the motor mounting base and under the turn table, thereby generating a transverse force exerted on the rotational motor shaft due to a magnetic force of the turn table magnet which acts on the magnetic plate member so as to tilt the rotational motor shaft.

REFERENCES:
patent: 3751044 (1973-08-01), Sawada
patent: 4730299 (1988-03-01), Kamoshita et al.
patent: 4951277 (1990-08-01), Masunaga et al.
patent: 5218598 (1993-06-01), Chiba

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