Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1990-03-28
1991-05-07
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
369270, G11B 2504
Patent
active
050141430
ABSTRACT:
A disk chuck mechanism for chucking a disk in a stepped-down portion of a rotary chuck member and releasing the disk by vertically moving a chuck head coupled to an operating shaft is disclosed wherein a ring member having a cut in part is provided for its diameter to be enlarged opposite to the stepped-down portion of the rotary chuck member for chucking the disk and biased in the direction in which its diameter contracts. The chuck head is moved in the axial direction to utilize an inclined side face of the chuck head to enlarge the diameter of the ring member. With this arrangement, it is ensured that the disk is chucked in between the stepped-down portion of the rotary chuck member and the ring member with the one stroke movement of the chuck head.
REFERENCES:
patent: 4347599 (1982-08-01), Vitale
patent: 4562570 (1985-12-01), Denton
patent: 4570255 (1986-02-01), Van Alem et al.
patent: 4755981 (1988-07-01), Ekhoff
patent: 4786997 (1988-11-01), Funabashi et al.
patent: 4898397 (1990-02-01), Smith
patent: 4958839 (1990-09-01), Guzik
Hongo Tsutomu
Iizuka Nobuyuki
Mori Kyoichi
Nakadai Tsutomu
Toda Kuniaki
Hitachi Electronics Engineering Co. Ltd.
Wolff John H.
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