Protective casing for a magnetic disk

Details Protective casing for a magnetic disk Protective casing for a magnetic disk

1990-07-30

1992-01-14

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Record medium

In container

360137, 360132, 206444, G11B 23033

Patent

active

050815563

ABSTRACT:
A disk cartridge has a casing of resinous material which receives therein a floppy disk in a rotatable manner, the casing being formed by combining upper and lower half casings with the use of connecting ribs formed on the inner surface of at least one of the upper and lower half casings. The upper and lower half casings respectively have an outer circumferential wall at the circumference of the inner surface and an annular rib at the inner portion of the outer circumferential wall so as to define a floppy disk rotating region, wherein projections are formed in the annular rib of the upper half casing. Recesses are formed in the annular rib of the lower half casing so that the projections and the recesses are fitted to each other in a non-contacting state so as to form a complete annular wall, and sealing ribs are formed on the outer surface of the annular rib of the upper half casing so as to extend over gaps formed at the fitting portion of the projections and recesses.

REFERENCES:
patent: 4669078 (1987-05-01), Ogusu
patent: 4710839 (1987-12-01), Iizuka et al.
patent: 4746013 (1988-05-01), Suzuki et al.
patent: 4802046 (1989-01-01), Tanaka et al.
patent: 4970618 (1990-11-01), Kato et al.

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