Magnetic recording disk

Details Magnetic recording disk Magnetic recording disk

1991-07-23

1993-04-27

Anderson, Bruce C.

Dynamic magnetic information storage or retrieval

Record medium

Disk

360133, G11B 582

Patent

active

052067734

ABSTRACT:
A magnetic recording disk with a central hub including a core member having a central aperture, a ring member mounted on the core member, a covering member, a leaf spring and a pulse generating member. The ring member includes a recessed portion, a pair of slotted portions for accomodating the leaf spring and a pair of swelled portions extending inwardly toward the central aperture of the core member. The pulse generating member is connected to the core member and extends through the ring member in the direction perpendicular to the surface of the core member so that a tip end of the pulse generating member is projected outwardly from a bottom surface of the recessed portion. When a spindle of a disk driving mechanism is inserted into a central bore of the disk, the axis of a spindle is consistent with the center of rotation of a magnetic recording medium, retained by the combination of the leaf spring and the swelled portions.

REFERENCES:
patent: 1915348 (1933-06-01), Acheson
patent: 4459628 (1984-07-01), Barton
patent: 4532564 (1985-07-01), Larson
patent: 4630156 (1986-12-01), Saito
patent: 4743993 (1988-05-01), Ommori et al.
patent: 5014152 (1991-05-01), Sasaki

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