Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1989-12-11
1992-01-28
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 75, 360109, G11B 556
Patent
active
050847937
ABSTRACT:
The invention provides an improved mechanical apparatus having a driving mechanism for moving two movably contacting members relative to each other. The driving mechanism is combined with a temperature-displacement converter which drives the two members to be displaced relative to each other in response to a variation of the environmental temperature independently of operation of the driving mechanism. The temperature-displacement converter provides a fine displacement of the movable contacts in response to a variation of the environmental temperature to prevent a possible adhesive phenomenon between the two members or a possible increase of the sliding resistance between them, thereby preventing an adhesive phenomenon between a magnetic head of the CSS type and a magnetic disk of a magnetic disk device and so forth. A more effective operation is attained by further employment of a one-way clutch which is put into a coupled condition only when the relative displacement by the temperature-displacement converting means occurs in a predetermined direction but into a non-coupled condition when the relative movement is caused by the driving mechanism.
REFERENCES:
patent: 4686595 (1987-08-01), Bryer
patent: 4814908 (1989-03-01), Schmitz
patent: 4841397 (1989-06-01), Maeda
patent: 4969057 (1990-11-01), Inomata et al.
Amano Hideo
Hanada Kazuyoshi
Ishida Atsuo
Sasamoto Asao
Shiono Toshio
Hitachi , Ltd.
Wolff John H.
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