Gas filtering arrangement for magnetic disk information storage

Details Gas filtering arrangement for magnetic disk information storage Gas filtering arrangement for magnetic disk information storage

1976-03-15

1977-10-18

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 2304

Patent

active

040549313

ABSTRACT:
A gas filtering arrangement is described for a magnetic disk file consisting of a closed housing surrounding the magnetic disks. A bearing mounted in a wall of the housing carries a drive shaft upon which the disk (or disks) and a gas impeller are mounted. The impeller pumps gas through a main filter, located within the housing, to clean the gas. The air flow due to the impeller and the disk is arranged to maintain a positive air pressure adjacent the bearing to prevent gas entering the housing through the bearing. A breather filter within the housing connected to the exterior of the housing by a breather aperture is arranged so that during operation a negative pressure is applied to the breather filter to prevent gas leaving the housing through the breather filter.

REFERENCES:
patent: 3624624 (1971-11-01), Johnson
patent: 3631423 (1971-12-01), Groom
patent: 3710357 (1973-01-01), Buslik
patent: 3731291 (1973-05-01), Walsh
patent: 3849800 (1974-11-01), Cuzner

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