Head with an air bearing surface having a shallow recessed...

Details Head with an air bearing surface having a shallow recessed... Head with an air bearing surface having a shallow recessed...

2007-04-17

2010-12-21

Klimowicz, William J (Department: 2627)

Dynamic magnetic information storage or retrieval

Fluid bearing head support

Disk record

C360S235800

Reexamination Certificate

active

07855854

ABSTRACT:
A head has a slider with an air bearing surface having a left trailing air flow dam extending from a trailing pad along a lateral axis, and a right trailing air flow dam extending from the trailing pad along the lateral axis in an opposing direction. A sub-ambient pressure cavity is disposed adjacent to and upstream of at least one of the trailing air flow dams. The trailing pad and the left and right trailing air flow dams together laterally span at least 75% of the width of the slider. Each of the left and right trailing air flow dams is recessed from the primary plane by a step depth in the range 0.05 to 0.5 microns, and the sub-ambient pressure cavity is recessed from the primary plane by a cavity depth in the range 0.8 to 2 microns.

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Office Action dated Jun. 16, 2010 from U.S. Appl. No. 11/860,667, 29 pages.
Notice of Allowance dated Sep. 22, 2010 from U.S. Appl. No. 11/860,667, 10 pages.

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