Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1978-11-02
1980-01-22
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record medium
In container
206444, 206333, G11B 2304, G11B 5016, B65D 8502
Patent
active
041853148
ABSTRACT:
A record disc cartridge has a single internal shutter for opening and closing a head access port adjacent a spindle access member in one wall. A further aperture allows the shutter to be actuated to an open position as the cartridge is moved into a playing position. A spring in the cartridge yieldably biases the shutter to a closed position. When the shutter is open, the spring in the cartridge is cocked to eject the cartridge from a player. Upon release, the spring acts to eject the cartridge.
REFERENCES:
patent: 3416150 (1968-12-01), Lindberg, Jr.
patent: 3529301 (1970-09-01), Hiruta
patent: 3593327 (1971-07-01), Shill
patent: 4084200 (1978-04-01), Adair et al.
Hatchett Michael R.
Rigbey Leonard J.
Eddleman Alfred H.
International Business Machines - Corporation
Somermeyer Herbert F.
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