Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1985-04-25
1987-10-06
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record medium
In container
360 99, 206444, 369291, G11B 23033, G11B 5016, G11B 370, B65D 8530
Patent
active
046987142
ABSTRACT:
A magnetic disc cassette has a casing for enclosing a magnetic disc therein and a shutter provided on the casing and slideably moveable to expose or cover a head access opening in the casing. The shutter is molded from a synthetic resin to have a generally U-shaped cross section and has opposed edges which closely approach each other and are separated by less than the width of the casing when the shutter is removed from the casing.
REFERENCES:
patent: 3118960 (1964-01-01), Cook
patent: 3974252 (1976-08-01), Bischoff, Jr.
patent: 4517617 (1985-05-01), Tsuji et al.
patent: 4544977 (1985-10-01), Ozawa et al.
patent: 4546397 (1985-10-01), Asami et al.
patent: 4579225 (1986-04-01), Kato
Matsuzaka Takayoshi
Sugawara Kokichi
Bussan Matthew J.
Eslinger Lewis H.
Heinz A. J.
Sinderbrand Alvin
Sony Corporation
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