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. 09, 2010
Filed:
Jul. 16, 2009
Shigeto Ueno, Toyonaka, JP;
Teruyuki Naka, Izumi, JP;
Shinichi Maeda, Daito, JP;
Masakazu Ishizuka, Ikoma, JP;
Yasuo Kabuta, Tondabayashi, JP;
Isao Obata, Nara, JP;
Tomoshi Tokunaga, Zama, JP;
Akira Yoshida, Zama, JP;
Shigeto Ueno, Toyonaka, JP;
Teruyuki Naka, Izumi, JP;
Shinichi Maeda, Daito, JP;
Masakazu Ishizuka, Ikoma, JP;
Yasuo Kabuta, Tondabayashi, JP;
Isao Obata, Nara, JP;
Tomoshi Tokunaga, Zama, JP;
Akira Yoshida, Zama, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A disk drive includes a disk rotating unit, a traverse base holding the disk rotating unit, a damper member holding the traverse base, a main unit holding the traverse base through the damper member, a tray mounting a cartridge housing the disk, a driving unit that loads or ejects the tray and moves the disk in the cartridge relative to the disk rotating unit, and a traverse base holding member that is moved vertically by the driving unit relative to the main unit at the time of tray loading or tray ejection. The traverse base is held by the traverse base holding member through the damper member, and the resonance frequencies of the damper member in the radius direction of the disk as it is being loaded and in the direction of a rotation shaft are set higher than the maximum rotational frequency of the disk.