Apparatus for positioning a magnetic disk read head with pulse o

Details Apparatus for positioning a magnetic disk read head with pulse o Apparatus for positioning a magnetic disk read head with pulse o

1985-06-26

1987-12-01

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360106, G11B 559

Patent

active

047108347

ABSTRACT:
A positioning mechanism for a magnetic fixed (or hard) disk storage unit incorporates a bearing block forming part of the magnet system for the rotational positioner, and carrying a positioning shaft. A pivot member rotationally seated on the shaft has pivot arms carrying magnetic heads and brackets for carrying the magnetic coil for positioning the heads. A pulse operated detent magnet is provided and incorporates a stop armature. The armature is biased into detent retaining position, but is restrained by retaining spring in mechanically self-holding condition. It is automatically released when the pivot member swings into the detent position, corresponding to the landing zone for the magnetic heads.

REFERENCES:
patent: 4139874 (1979-02-01), Shiraishi
patent: 4484241 (1984-11-01), Brende
patent: 4562500 (1985-12-01), Bygdnes

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