Disc chucking mechanism

Details Disc chucking mechanism Disc chucking mechanism

1993-05-05

1994-04-12

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 17028

Patent

active

053030982

ABSTRACT:
A disc chucking unit for supporting a disc loaded on a disc table for rotation in unison with the disc table is constituted by the disc table on which a disc is placed and which is rotationally driven by a rotating driving unit, a fitting member arranged at the center of the disc table and fitted into a central opening of the disc, and a plurality of ball-shaped member reciprocably mounted in the fitting member. These ball-shaped members are biased outwardly from the fitting member by an elastic element for thrusting the disc placed on the disc table towards the disc table, so that the disc may be loaded in a centered and offset-free state on the disc table despite the small-sized and simplified construction of the chucking unit.

REFERENCES:
patent: 3857526 (1974-12-01), Dischert
patent: 4618900 (1986-10-01), Saito
patent: 4649532 (1987-03-01), Aldenhoven
patent: 4730300 (1988-03-01), Kamoshita et al.
patent: 4958839 (1990-09-01), Guzik et al.
Patent Abstracts of Japan: vol. 8, No. 23 (p.251) (1460) Jan. 31, 1984, relating to JP-A-58 179 972 (Matsushita Denki Sangyo), Oct. 21, 1983.
IBM Technical Disclosure Bulletin, vol. 21, No. 8, Jan. 1979, p. 3080, K. Jooss, "Self-centering disk drive".

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