Convergent channel, trenched disc head slider

A disc drive assembly comprising:

• a housing;
• a disc rotatable about a central axis within the housing;
• an actuator mounted within the housing;
• and
• a slider supported over the disc by the actuator and comprising:
• a slider body comprising a leading slider edge, a trailing slider edge and a slider length measured from the leading slider edge to the trailing slider edge;
• first and second raised rails positioned on the slider body, which comprise first and second bearing surfaces, respectively;
• a recessed area positioned between the first and second rails and having a recess floor;
• a first raised pad positioned rearward of a midpoint along the slider length and comprising a third bearing surface;
• and
• a first convergent channel recessed within the third bearing surface and trailing a portion of the recessed area, wherein the first convergent channel comprises a leading channel end open to fluid flow from the portion of the recessed area, non-divergent channel side walls and a trailing channel end closed to the fluid flow and forward of a localized region of the third bearing surface.

A disc head slider comprising:

• a slider body comprising a leading slider edge, a trailing slider edge and a slider length measured from the leading slider edge to the trailing slider edge;
• first and second rails positioned on the slider body;
• a recessed area positioned between the first and second rails and having a recess floor;
• a bearing surface positioned rearward of a midpoint along the slider length;
• and
• a first convergent channel recessed within the bearing surface and trailing a portion of the recessed area, wherein the first convergent channel comprises a leading channel end open to fluid flow from the portion of the recessed area, non-divergent channel side walls and a trailing channel end closed to the fluid flow and forward of a localized region of the bearing surface.