Disc cartridge

Details Disc cartridge Disc cartridge

1998-04-14

2000-08-22

Ometz, David L.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

360133, G11B 2303

Patent

active

061082988

ABSTRACT:
A disc cartridge of a three-piece structure capable of enhancing moldability and rigidity of a center frame. The center frame having a square-like shape is interposedly arranged between an upper plate and a lower plate and has a receiving space defined therein for receiving a disc-like medium. The upper and lower plates are provided on four corners thereof with fixing bosses respectively. The center frame is formed on opposite surfaces thereof with fitting recesses in which the bosses are fitted, respectively. The center frame is formed on each corner thereof with a thin-wall portion having a reduced thickness of 50 to 80% based on a whole thickness of the center frame.

REFERENCES:
patent: 3668658 (1972-06-01), Flores et al.
patent: 4669078 (1987-05-01), Ogusu
patent: 4911301 (1990-03-01), Dieffenbach
patent: 5153801 (1992-10-01), Ikebe et al.
patent: 5526337 (1996-06-01), Housey et al.
patent: 5537389 (1996-07-01), Kuwa et al.
patent: 5936935 (1999-08-01), Hanakawa et al.
Patent Abstracts of Japan, vol. 017, No. 681 (P-1660), JP 05 225742 A, (Hitachi Ltd.), Sep. 3, 1993.
Patent Abstracts of Japan, vol. 018, No. 552 (P-1815), JP 06 195924 A (Sony Corp.), Jul. 15, 1994.
Patent Abstracts of Japan, vol. 006, No. 209 (P-150), JP 57 113466 A (Sony KK), Jul. 14, 1982.

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