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:
Apr. 12, 2005
Filed:
May. 30, 2002
Toshihiko Shimizu, Yasato, JP;
Tetsuya Hamaguchi, Chiyoda, JP;
Toshihiro Arisaka, Odawara, JP;
Hiromitsu Masuda, Odawara, JP;
Gentaro Nakamura, Odawara, JP;
Takenori Atsumi, Chiyoda, JP;
Toshihiko Shimizu, Yasato, JP;
Tetsuya Hamaguchi, Chiyoda, JP;
Toshihiro Arisaka, Odawara, JP;
Hiromitsu Masuda, Odawara, JP;
Gentaro Nakamura, Odawara, JP;
Takenori Atsumi, Chiyoda, JP;
Hitachi Global Storage Technologies Japan, Ltd., Kanagawa, JP;
Abstract
According to the invention, there is provided a carriage arm assembly including a carriage arm having two arm members. The arm member is constructed in such a way that the width of its coil side end and the width of its suspension side end are narrower than that of its intermediate area. This construction widens a servo band width, improves positioning accuracy, and reduces positioning errors of a magnetic disk apparatus, so that recording density is improved and storage capacity is increased. Further, by coupling two arm members using a restriction member via a visco-elastic member, it is possible to achieve a high damping effect on various vibration modes including in-plane bending of the arms, and suppress vibration of the carriage so as to reduce the positioning errors.