The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2005
Filed:
Mar. 01, 2002
Applicants:
Troy Michael Herndon, San Jose, CA (US);
Norbert Steven Parsoneault, Scotts Valley, CA (US);
Donald James Macleod, Santa Cruz, CA (US);
Inventors:
Troy Michael Herndon, San Jose, CA (US);
Norbert Steven Parsoneault, Scotts Valley, CA (US);
Donald James Macleod, Santa Cruz, CA (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B017/02 ; G11B021/02 ;
U.S. Cl.
CPC ...
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.