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:
Feb. 26, 2008
Filed:
Mar. 24, 2006
Mikio Tokuyama, Tsukuba, JP;
Hayato Shimizu, Ryugasaki, JP;
Satomitsu Imai, Odawara, JP;
Shozo Saegusa, Ibaraki-ken, JP;
Masahiko Sega, Hiratsuka, JP;
Toshihisa Okazaki, Odawara, JP;
Yuzo Yamaguchi, Shimonoseki, JP;
Mikio Tokuyama, Tsukuba, JP;
Hayato Shimizu, Ryugasaki, JP;
Satomitsu Imai, Odawara, JP;
Shozo Saegusa, Ibaraki-ken, JP;
Masahiko Sega, Hiratsuka, JP;
Toshihisa Okazaki, Odawara, JP;
Yuzo Yamaguchi, Shimonoseki, JP;
Hitachi Global Storage Technologies Japan, Ltd., Odawara-shi, JP;
Abstract
A magnetic disc unit includes a rotating disc type magnetic disc having an outer periphery, and a carriage arm linked to a head support mechanism for a recording/reproducing head. A base has an outer periphery and mounts the rotating disc type magnetic disc and the carriage arm, and has a side wall with an inner wall surface having an opening for inserting the carriage arm. The inner wall surface of the side wall defines a shroud surrounding the outer periphery of the magnetic disc, except at the opening in the side wall where the shroud is projected inwardly so as to decrease an opening angle of the opening in the side wall. A gap between the outer periphery of the magnetic disc and the shroud is set in a range not less than 0.1 mm but not greater than 0.6 mm.