Dynamic magnetic information storage or retrieval – Fluid bearing head support – Disk record
Reexamination Certificate
2007-01-16
2007-01-16
Heinz, A. J. (Department: 2627)
Dynamic magnetic information storage or retrieval
Fluid bearing head support
Disk record
C360S236400, C360S236500, C360S236900, C360S237000
Reexamination Certificate
active
10784506
ABSTRACT:
An air bearing burnish slider burnishes very small asperities and cleans the loose particles that adhere to the magnetic recording media. The slider applies a controllable contact force to effectively burnish disk asperities or partially attached particles. In addition, the slider cleans the loose particles effectively while flying in a stable fashion. In a low pitch design, diagonal rails push particles away from the disk surface and trailing edge pads contact the disk at lower linear velocities. Rail pads retain loose contamination and debris in their pockets and burnish asperities. Another design provides a milder burnish force and flies in a high pitch configuration. The trailing edge pads provide stable contacts and the rails help in sweeping away debris. In both designs, the contact forces can be controlled by adjusting linear velocities. A step taper at the leading edge provides a pitch-producing lift force.
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Agrawal Parul
Lee Charles
Lee Li-Chung
Nayak Ullal Vasant
Ngo Hang Fai
Bracewell & Giuliani LLP
Heinz A. J.
Hitachi Global Storage Technologies Netherlands BV
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