Dynamic information storage or retrieval – Storage medium structure – Adjuncts or adapters
Patent
1987-08-28
1989-08-01
Stephan, Steven L.
Dynamic information storage or retrieval
Storage medium structure
Adjuncts or adapters
206312, 206444, 360133, G11B 2303
Patent
active
048539252
ABSTRACT:
An information memory unit includes a cartridge and an information memory medium rotatably arranged in the cartridge. The cartridge has a cartridge body having first and second surface walls facing each other. A shutter is slidably mounted on the cartridge body and includes a first shielding portion located on the first surface wall, for opening and closing a first opening portion formed in the first surface wall, a second shielding portion located on the second surface wall, for opening and closing a second opening portion formed in the second surface wall, and a coupling portion connecting the first and second shielding portions. The first and second shielding portions has guide projections which are engaged first and second guide grooves formed in the first and second surface walls, respectively. When the shutter is fitted to the cartridge body, the guide projections are guided to the first and second guide grooves, respectively, by means of first and second fitting grooves which are formed in the first and second surface walls, respectively.
REFERENCES:
patent: 4546397 (1985-10-01), Asami et al.
patent: 4589105 (1986-05-01), Nemoto et al.
patent: 4614990 (1986-09-01), Saito
patent: 4680662 (1987-07-01), Fukushima et al.
patent: 4682322 (1987-07-01), Ohta
patent: 4685017 (1987-08-01), Swinburne et al.
patent: 4688206 (1987-08-01), Nakagawa et al.
Kabushiki Kaisha Toshiba
Stephan Steven L.
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