Architecture for 21/2 inch diameter single disk drive

Details Architecture for 21/2 inch diameter single disk drive Architecture for 21/2 inch diameter single disk drive

1989-07-31

1991-06-18

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360137, G11B 5012

Patent

active

050253352

ABSTRACT:
A two and one half inch form factor disk drive has a base and cover formed of molded plastic and engaged with each other by snap-fit connectors. The cover is molded from a plastic which is more flexible than that used for the base so that the cover complies to the base when the cover and base are engaged. Mounting brackets attached to the cover support a printed circuit board on the opposite side of the base from the cover. The two and one half inch form factor is established by providing the disk drive with a length equal to the width of a 31/2 inch disk drive and a width equal to half of the length of a 31/2 inch disk drive. The disk drive includes a disk having a diameter of approximately 2.6 inches (65 mm) and weighs approximately 5 ounces. A closed-loop, embedded servo tracking system provides a large storage capacity relative to the area of storage media available.

REFERENCES:
patent: 4639863 (1987-01-01), Harrison et al.
patent: 4660120 (1987-04-01), Manzke et al.
patent: 4710834 (1987-12-01), Brand et al.
patent: 4712146 (1987-12-01), Moon et al.
patent: 4853807 (1989-08-01), Trager
patent: 4881139 (1989-11-01), Hazebrouck
patent: 4882671 (1989-11-01), Graham et al.
patent: 4890174 (1989-12-01), Chalmers et al.
IBM/TDB, vol. 19, No. 4, Sep. 1976, p. 1440, Actuator Retraction Device by Hearn.

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