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:
Nov. 02, 2010
Filed:
Aug. 29, 2005
Yoshiaki Yamauchi, Minori, JP;
Hideyuki Onuma, Urayasu, JP;
Kuniyuki Kimura, Fujisawa, JP;
Sojiro Kirihara, Kawasaki, JP;
Shinya Tsubota, Mito, JP;
Yoshiaki Yamauchi, Minori, JP;
Hideyuki Onuma, Urayasu, JP;
Kuniyuki Kimura, Fujisawa, JP;
Sojiro Kirihara, Kawasaki, JP;
Shinya Tsubota, Mito, JP;
Hitachi-LG Data Storage, Inc., Tokyo, JP;
Abstract
A disk drive device has a configuration in which one of stepped parts defined by a circular recess for guiding a disc, formed in a disc tray is substantially flush with the bottom surface of the circular recess even in an area beyond the outer peripheral part of a disc so that no air cavity part facing the outer peripheral side surface of the disc is induced around the disc. Thereby, it is possible to aim at lowering cavity noise caused by the air cavity during high speed rotation and fluid noise caused by turbulence.