Magnetic disc drive system

Details Magnetic disc drive system Magnetic disc drive system

1980-08-04

1983-05-24

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 1702

Patent

active

043853331

ABSTRACT:
A magnetic disc drive system having a pair of vertically spaced discs rotatably mounted in a compact housing provided with a cover for closing the housing. The cover has a duct extending along its inner surface for performing part of an air flow path through the housing. An impeller mounted above the upper discs rotates with the discs and generates the air flow which moves outwardly off the discs to keep the surfaces of the discs free of foreign particles. The air flow path extends downwardly past the discs and along the bottom of the housing and into a cavity which contains a filter which traps foreign particles. The upper end of the filter is coupled in a sealing relationship to one end of the duct to complete the air flow path. A number of read-write heads are mounted on a shiftable carriage and are coupled with the discs for movement back and forth along the discs in response to signals applied to a reversible motor coupled to the carriage. The drive motor for the discs has a brake on the bottom of the housing which is released during normal operation but which is applied to stop the discs when power is removed from the drive motor of the discs.

REFERENCES:
patent: 4054931 (1977-10-01), Bolton et al.
patent: 4317146 (1982-02-01), Gervais

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