Patent ID: 8279556
Filing Date: 2012-10-02
Classification: G11B

Abstract:
1. A slider designed to reduce fly height sigma in a plurality of fly media, the slider comprising: an air bearing surface; a front shallow step pad and a rear shallow step pad that are at a first level deeper than the air bearing surface; a first rear side pocket that is at a second level deeper than the air bearing surface, said first side pocket substantially polygon shaped; and a second rear non-symmetrical side pocket non-symmetrical with said first rear side pocket that is at said second level deeper than the air bearing surface, said second rear non-symmetrical side pockets substantially polygon shaped wherein said second rear non-symmetrical side pocket comprises a larger volume than said first rear side pocket, wherein the first level ranges from approximately 0.05 to 0.40 microns deeper than the air bearing surface and the second level ranges from approximately 1.0 to 4.0 microns deeper than the air bearing surface.