Disk drive assembly

Details Disk drive assembly Disk drive assembly

1978-07-05

1980-02-26

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

308 361, G11B 1702, F16C 1952

Patent

active

041908708

ABSTRACT:
A disk drive assembly includes a baseplate housing joined with front and rear covers to enclose a spindle that supports ball bearings and a hub for rotating a stack of magnetic disks. Voice coil actuators are disposed diametrically opposed but offset on each side of a plane bisecting the stack. Pressurizing ports, annular seals and a sealing cap prevent air contamination. Thermally conductive rings contacting the bearings and the housing compensate for temperature differential. Symmetry of the assembly in at least two planes ensures minimal vibration and resonance effects.

REFERENCES:
patent: 3359047 (1967-12-01), Andersen
patent: 3637928 (1972-01-01), Poulett
patent: 4005490 (1977-01-01), Duncan et al.
patent: 4008492 (1977-02-01), Elsing

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