Disc cartridge

Details Disc cartridge Disc cartridge

1995-02-27

1997-04-15

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record medium

In container

369270, G11B 2303

Patent

active

056215975

ABSTRACT:
A disc cartridge capable of permitting a hub to be constantly rotated about the center of rotation thereof without any eccentricity, to thereby ensure smooth and stable rotation of the disc. The hub is formed with three drive shaft inserting holes in a manner to be spaced from each other at equal intervals and positioned on a concentric circle of a predetermined radius defined about a center of rotation of the hub. The drive shaft inserting holes each are formed with a linear driven surface which is adapted to be contacted with a drive shaft inserted into the hole. The driven surface may be arranged at an angle of -30 to +30 degrees with respect to the center of rotation of the hub.

REFERENCES:
patent: 4060839 (1977-11-01), Meadows
patent: 4149207 (1979-04-01), Porter, Jr. et al.
patent: 4152740 (1979-05-01), Stratton
patent: 4542426 (1985-09-01), Wilkinson, Jr. et al.
patent: 4686666 (1987-08-01), Dieffenbach
patent: 4697216 (1987-09-01), Tsukahara
patent: 4843512 (1989-06-01), Moore et al.
patent: 4896232 (1990-01-01), Sugawara
patent: 5072438 (1991-12-01), Suzuki et al.
patent: 5130870 (1992-07-01), Jabbari

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