Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1994-03-09
1995-09-26
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
G11B 1702
Patent
active
054538904
ABSTRACT:
A low airflow hard disk apparatus comprises a base, a cover member, a rotational portion disposed in a disk chamber, a hard disk held by and rotatable with the rotational portion, a first projection portion disposed on the lower surface of the cover member and facing toward the upper surface of the hard disk, and a second projection portion disposed on the upper surface of the base and facing toward the lower surface of the hard disk. The first and second projection portions, preferably radially extending fins, prevent an air flow from generating by the rotation of the hard disk.
REFERENCES:
patent: 4130845 (1978-12-01), Kulma
patent: 4369475 (1983-01-01), Ho et al.
patent: 4857087 (1989-08-01), Bolton et al.
patent: 5025335 (1991-06-01), Stefansky
patent: 5029026 (1991-07-01), Stefansky et al.
Itoi Hirotada
Miyaji Itsuo
Mori Yoichi
Ohta Kihachiro
Takegami Kiyoyoshi
Nippon Densan Corporation
Tupper Robert S.
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