Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1998-08-11
2000-12-26
Korzuch, William R.
Dynamic magnetic information storage or retrieval
Record medium
In container
369291, G11B 2303
Patent
active
061668834
ABSTRACT:
A disk cassette including a cassette housing having upper and lower shells in which a freely rotatable disc is accommodated. A shutter is slidably secured in parallel relation to the side surfaces of the cassette housing and opens/closes a head insertion hole formed in the cassette housing. The disk cassette further includes a shutter spring assembly which has one end thereof hooked to the cassette housing and the other end thereof hooked to the shutter and thereby urges the shutter so as to close the head insertion hole. An insertion groove is provided in the cassette housing for inserting the shutter spring assembly thereinto and be covered by the shutter when the shutter closes the head insertion hole.
REFERENCES:
patent: 4470083 (1984-09-01), Doering et al.
patent: 4559575 (1985-12-01), Noto et al.
patent: 5515358 (1996-05-01), Goto
patent: 5777982 (1998-07-01), Koshiyouji
patent: 5793742 (1998-08-01), Sandell et al.
Higuchi Shintaro
Miyata Kiyoyuki
Frommer William S.
Korzuch William R.
Ryan Matthew K.
Sony Corporation
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