Hard disk drive having a shielding structure against electromagn

Details Hard disk drive having a shielding structure against electromagn Hard disk drive having a shielding structure against electromagn

1992-05-27

1994-04-05

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9701, G11B 3314

Patent

active

053010752

ABSTRACT:
A hard disk drive has a configuration in which a metal cover, which is fitted with a hard disk, is fitted on a metal base by being screwed at a plurality of places, with a gasket being sandwiched in between the metal base and the metal cover. First protuberances are provided on the base on both sides of each hole for accepting a screw, there being one protuberance on one side and another on another side of said screw hole, second protuberances being provided on the cover at positions that are opposite to said first protuberances, and such that the first protuberances and the second protuberances are in pressured contact with each other on both sides of each screw portion, when the cover is fixed onto the base.

REFERENCES:
patent: 4504879 (1985-03-01), Toldi et al.
patent: 4769733 (1988-09-01), Freeman et al.
patent: 5021905 (1991-06-01), Sleger
patent: 5025335 (1991-06-01), Stefansky

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