Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1989-04-06
1991-06-18
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
G11B 3319
Patent
active
050253379
ABSTRACT:
A recirculating filter system is provided for a sealed magnetic disk drive by providing a cartridge housing that mounts a filter medium closely adjoining the disk stack and substantially concentric therewith. The frame that mounts the filter medium also serves as a baffle or diverter to deflect air impelled by rotation of the disks to the rear of the filter medium. The remaining sides of the housing contact the cover or enclosure to define a dead box behind the filter medium wherein the velocity head of the air flow is converted to a potential head. Air impelled along the surface of the medium, at the side confronting the disk stack, provides some aspiration. A plenum formed at the radial outward side of the filter medium enables effective use of the entire medium surface. The recirculating air filter cartridge is not only compact within a corner of the cover or enclosure, but also is easily manufactured as a result of the simple filter medium configuration.
REFERENCES:
patent: 4268878 (1981-05-01), Kearns
patent: 4594626 (1986-06-01), Frangesh
patent: 4636891 (1987-01-01), Barski
Heinz A. J.
International Business Machines - Corporation
Lahtinen Robert W.
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