Patent ID: 8493688

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, the leading portion having a first flange extending in a direction substantially parallel to the outside edge, the leading portion having a second flange extending in a direction substantially parallel to the inside edge; and a tail portion, the tail portion having: an outside portion extending substantially parallel to the outside edge, the outside portion spaced from the first flange by a first distance to define a first gap; an inside portion extending substantially parallel to the inside edge, the inside portion spaced from the second flange by a second distance to define a second gap, wherein the first gap and the second gap are aligned along a line that is at an angle relative to each of the leading edge, the outside edge, the trailing edge, and the inside edge; and a trailing portion coupled between the outside portion and the inside portion, the trailing portion having a trailing pad, a first wall extending between the trailing pad and the outside portion, and a second wall extending between the trailing pad and the inside portion, wherein the air bearing surface substantially encloses a cavity and wherein the cavity is bound by the first flange, the second flange, the outside portion, the inside portion, and the trailing portion.