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:
May. 15, 2001
Filed:
Nov. 19, 1999
Kazuyoshi Hanada, Hadano, JP;
Toshihisa Okazaki, Odawara, JP;
Satomitsu Iami, Odawara, JP;
Masayuki Honchi, Albany, CA (US);
Hideyuki Takagi, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic disk device having a base and a cover; a magnetic disk recording information on a recording surface thereof facing the base or the cover; a spindle motor fixed to the base and rotating the magnetic disk; a head for recording and reproducing the information to and from the recording surface of the magnetic disk; a slider having the head mounted thereto; a first suspension supporting the slider; a head arm provided between the magnetic disk and the base or the cover and supporting the first suspension on the side of the recording surface; and a carriage fixed to the base and swinging the head arm, moving the head in a radial direction of the magnetic disk and positioning the head. The magnetic disk device also has a second suspension provided on the base side or the cover side of the head arm and having a natural frequency substantially equal to a natural frequency of the first suspension.