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US 7,029,590 B2Granted
Self-limiting wear contact pad slider and method for making the same
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsPantelis S. Alexopoulos, Lee K. Dorius, Francis Chee-Shuen Lee, Timothy C. O'Sullivan, Gurinder Singh
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Abstract
The present invention provides a non-actuatable, self-limiting wear contact pad slider and method for making the same. A protruding element surrounding the transducer is fabricated using a third etch step so that the protruding element has a height that is greater than or equal to the designed fly height of the aerodynamic lift surface minus the disk roughness.
Claims9
A method for forming a slider, comprising:
- forming a slider body having a first side, a second side, a leading edge and a trailing edge;
- using at least a first etching to form an air bearing structure on the slider body for providing a desired fly height, and
- using a last etching to form a non-actuatable, wearable pad on the air bearing structure at the trailing edge, the wearable pad being formed around a transducer and extending above the air bearing surface, the wearable pad having a surface area of less than 5% of a total air bearing surface area and a predetermined height selected to be greater than or equal to the desired fly height minus a disk roughness, wherein the wearable pad erodes during use to produce an interference of zero at the desired fly height.
Dependencies are inferred from the claim text.