Patent ID: 8164860

Claim:
A head slider for a hard disk drive, comprising: a head body having a leading edge, a trailing edge, an outside edge, an inside edge, and an air bearing surface disposed on the head body, the air bearing surface having: a leading portion extending across the leading edge between the outside edge and the inside edge; and a tail portion spaced from the leading portion by a cavity that has a first depth relative to the air bearing surface, the tail portion having: an outside flange surrounding a first plateau that is at a second depth that is less than the first depth, the first plateau having a first width; an inside flange surrounding a second plateau that is at the second depth, the second plateau having a second width; and a trailing portion coupled between the outside flange and the inside flange, the trailing portion having a trailing pad, a first wall extending between the trailing pad and the outside flange to surround a third plateau that is at a third depth that is greater than the second depth and less than the first depth, and a second wall extending between the trailing pad and the inside flange to surround a fourth plateau at the third depth.