Air bearing magnetic head sliders

Details Air bearing magnetic head sliders Air bearing magnetic head sliders

1994-05-02

1995-03-07

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 560, G11B 2121

Patent

active

053963873

ABSTRACT:
The air bearing surface (ABS) of a head slider is formed with configured rails and leading edge tapers. In implementations of the invention, two side rails extend only partially from leading edge tapers to the slider trailing edge. The inner edges of each side rail are formed with at least two opposing angles so that at least two rail sections vary in width along the length of the rail. Each side rail is shaped with an oblique angle to reduce the rail width and a reverse angle to form the sections of differing widths. The leading edge side tapers may be angled for control of pitch stiffness of the slider. In one embodiment of the invention, a third center rail extends from a center taper to the slider trailing edge where the transducer is located. In another embodiment, a short center pad is provided at the trailing edge. In an alternative design, only two side rails are used without a center rail or pad. The ABS geometries disclosed herein include angled rail sections that provide controlled pitch and constant flying height during transducing operation in a disk drive.

REFERENCES:
patent: 4894740 (1990-01-01), Chhabra et al.
patent: 5062017 (1991-10-01), Strom et al.
patent: 5128821 (1992-07-01), Takeuchi et al.
patent: 5175658 (1992-12-01), Chang et al.
patent: 5212608 (1993-05-01), Yoneoka
patent: 5218494 (1993-06-01), Chapin et al.

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