Precision rotator

Details Precision rotator Precision rotator

1998-04-01

1999-08-10

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 553

Patent

active

059368098

ABSTRACT:
Between a manget (11) on the side of an upper drum (2) and a magnet or electromagnet (12) on the side of a lower drum (3), a force of attraction is exerted. With this force of attraction, pre-load of about 2 Kg is applied to a ball bearing (5) in a direction of an axis, to increase stability of rotation of the upper drum (2). Since the upper drum (2) is borne by the axis (4) with one bearing (5), a center of rotation of the upper drum (2) relative to the axis (4) can be changed by changing a balance among forces of attraction of three magnets or electromagnets (12). With this constitution, a precision rotator which allows correction of the center of rotation can be provided.

REFERENCES:
patent: 5694273 (1997-12-01), Takeuchi

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