Subambient pressure slider with partitioned subambient area

Details Subambient pressure slider with partitioned subambient area Subambient pressure slider with partitioned subambient area

2005-09-13

2005-09-13

Castro C, Angel (Department: 2653)

Dynamic magnetic information storage or retrieval

Fluid bearing head support

Disk record

Reexamination Certificate

active

06943989

ABSTRACT:
A subambient pressure air bearing slider for disk drives and the like is presented where the subambient pressure area is divided into two or more areas. For example, a first area extending between the rails can have a depth (e.g., between 20 and 100 microinches) relative to the height of the rails, while the second area has a deeper depth (e.g., between 20 and 200 microinches). In one embodiment, the second area is placed in the outside rear quadrant relative to the rear edge of the slider and the rail closer to the outside diameter of the moving disk. By partitioning the subambient pressure area and properly selecting the depths of the partitioned areas, the slider can achieve a more uniform flying height over the range of diameters of the moving disk, at different rotational speed velocities for the disk and at different operation altitudes.

REFERENCES:
patent: 5276573 (1994-01-01), Harada et al.
patent: 5343343 (1994-08-01), Chapin
patent: 5353180 (1994-10-01), Murray
patent: 5567331 (1996-10-01), Kajitani
patent: 6021020 (2000-02-01), Itoh et al.
patent: 6055130 (2000-04-01), Dorius et al.
patent: 6459546 (2002-10-01), Mundt et al.
patent: 6594113 (2003-07-01), Rao et al.

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