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. 21, 2012
Filed:
Apr. 17, 2009
Applicants:
Sojiro Kirihara, Kawasaki, JP;
Hiroshi Yamagishi, Chiba, JP;
Koji Matsumoto, Ichikawa, JP;
Inventors:
Assignee:
Hitachi-LG Data Storage, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 17/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tray of an optical disk device and an optical disk device including the tray are provided. In a tray rear portion located at a higher level than a tray bottom portion, a first tapered surface as a draft taper and a second tapered surface sloping more gently than the first tapered surface are formed. An upper end of the second tapered surface is located farther from a center of rotation of an optical disk than a lower end, and thus air in a peripheral portion of the optical disk generated during rotation of the disk is introduced along the tapered surface to a rear.