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:
Aug. 18, 2009
Filed:
Dec. 14, 2005
Naoaki Kanada, Kanagawa, JP;
Kohichi Takeuchi, Kanagawa, JP;
Naoaki Kanada, Kanagawa, JP;
Kohichi Takeuchi, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amseterdam, NL;
Abstract
Turbulence of an airflow returning to a magnetic disk along the base sidewall of a HDD is reduced to thereby reduce flutter of an actuator or a magnetic disk caused by the airflow, thus improving read/write performance. An HDD according to an embodiment of the present invention comprises a base, a top cover fixed to the base, a motor for rotating a magnetic disk, an actuator for moving a head which gets access to the magnetic disk, a ramp slope portion on which an extreme end is ridden up, a ramp support portion for supporting the ramp slope portion, and a stage for holding the ramp support portion. A flow passage is formed which runs toward the magnetic disk through an area near the ramp support portion on the side of the top cover. An inclined portion running toward the bottom of the base is formed on the end of the flow passage on the side of the magnetic disk.