Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1997-02-03
1998-06-16
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 555, G11B 2108
Patent
active
057680612
ABSTRACT:
A head stack assembly for a disk drive includes a swing-type structure, a head gimbal assembly, and a coil. The swing-type structure has a bore defining a bore axis. The head gimbal assembly is cantilevered from the swing-type structure to project radially away from the bore axis. The head gimbal assembly includes transducing structure for writing to and reading from the recording surface of a disk. The coil is cantilevered from the swing-type structure to project radially away from the bore axis in a direction opposite from the head gimbal assembly. The coil has a shape to provide a current flow path that includes first and second multi-leg portions that are spaced from each other in a direction parallel to the bore axis. Each of the multi-leg portions is generally C-shaped, substantially perpendicular to the bore axis, open at its end that is remote from the bore axis, and includes two radially-extending legs such that the current flow path provides four radially-extending legs with the four radially-extending legs being positioned such that upon installation of the head stack assembly into the disk drive the four radially-extending legs occupy an annular region in which a magnetic field distribution exists.
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Casey Shawn
Engwall Mats Anders
McCaslin Martin John
Kim W. Chris
Tupper Robert S.
Western Digital Corporation
Young Leo J.
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