Invention Grant
- Patent Title: Selectively stiff FDB bearing for better servo write
- Patent Title (中): 选择性硬的FDB轴承，用于更好的伺服写入
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Application No.: US10087116Application Date: 2002-03-01
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Publication No.: US06975484B2Publication Date: 2005-12-13
- Inventor: Troy Michael Herndon , Norbert Steven Parsoneault , Donald James Macleod
- Applicant: Troy Michael Herndon , Norbert Steven Parsoneault , Donald James Macleod
- Applicant Address: US CA Scotts Valley
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Scotts Valley
- Agency: Morrison & Foerster LLP
- Main IPC: F16C17/10
- IPC: F16C17/10 ; F16C33/10 ; G11B19/20 ; G11B17/02 ; G11B21/02
Abstract:
Hard disk drive track density is increased by selectively increasing the stiffness of a fluid dynamic bearing (FDB) motor during servo write. Applying a load to the shaft of a fixed shaft FDB motor to close the bearing gaps increases stiffness. Alternatively, the disk drive is cooled to increase bearing fluid viscosity or the motor is operated at an increased rotational velocity.
Public/Granted literature
- US20030117738A1 Selectively stiff FDB bearing for better servo write Public/Granted day:2003-06-26
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