Magnetic disk assembly cartridge for same and recording/reproduc

Details Magnetic disk assembly cartridge for same and recording/reproduc Magnetic disk assembly cartridge for same and recording/reproduc

1985-01-09

1986-05-20

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 97, 360 99, 346137, 369282, G11B 2303, G11B 5012, G11B 5016, G11B 370

Patent

active

045905320

ABSTRACT:
A magnetic disk assembly is comprised of a magnetic disk and a hub member centrally positioned on that disk and having a non-circular opening for receiving a circular drive shaft which serves to rotatably drive the magnetic disk. The hub member includes at least two reference surfaces which converge toward each other and which form two respective walls of the opening, and one or more resilient members having a surface which forms a third wall of the opening. The three walls are positioned and dimensioned such that when a circular drive shaft is received, the reference surfaces and the surface of the resilient member all tangentially contact the drive shaft to be rotated thereby when the drive shaft rotates.

REFERENCES:
patent: 1417339 (1922-05-01), Lenton
patent: 1821916 (1931-09-01), Acheson
patent: 1824253 (1931-09-01), Acheson
patent: 1846378 (1932-02-01), Acheson
patent: 2661815 (1953-12-01), McGay et al.
patent: 3682487 (1972-08-01), Eriksson
patent: 4060839 (1977-11-01), Meadows
patent: 4091454 (1978-05-01), Kauffmann
patent: 4149207 (1979-04-01), Porter
patent: 4441178 (1984-04-01), Kobayashi et al.
patent: 4445155 (1984-04-01), Takahashi et al.
patent: 4459628 (1984-07-01), Barton
patent: 4466032 (1984-08-01), Saito
IBM Technical Disclosure Bulletin, vol. 13, No. 5, Oct., 1970, p. 1242-"Disk Pack Locating Device"-A. Kluth.

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