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:
Oct. 23, 2001
Filed:
Mar. 05, 1999
Applicant:
Inventors:
Tetsuya Hamaguchi, Ibaraki-ken, JP;
Toshihiko Shimizu, Ibaraki-ken, JP;
Keiko Watanabe, Tsuchiura, JP;
Takeshi Yoshida, Odawara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 2/122 ;
U.S. Cl.
CPC ...
G11B 2/122 ;
Abstract
A low cost, reliable and high density magnetic disk device of a ramp loading type, in which a ramp or a dimple or dimples are free from wear even if loading and unloading are repeated. A plurality of dimples are arranged or running tracks are inclined so that the running tracks (ramp), on which a portion (a dimple or dimples) of a magnetic head supporting mechanism runs, includes different tracks at the time of loading and unloading. Alternatively, the magnetic head supporting mechanism has different portions engaging with the ramp at the time of loading and unloading.