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:
Mar. 31, 2009
Filed:
Jan. 28, 2005
Kenji Suzuki, Fujisawa, JP;
Kouki Uefune, Odawara, JP;
Takako Hayakawa, Hiratsuka, JP;
Osamu Beppu, Oiso, JP;
Kenji Suzuki, Fujisawa, JP;
Kouki Uefune, Odawara, JP;
Takako Hayakawa, Hiratsuka, JP;
Osamu Beppu, Oiso, JP;
Hitachi Global Storage Technologies Japan, Ltd., Odawara, JP;
Abstract
A magnetic disk apparatus capable of reducing deformation of a magnetic disk is disclosed. The magnetic disk apparatus comprises a magnetic disk on which data is recorded while the disk is driven, a hub around which the magnetic disk is supported from an under side of the magnetic disk, and a clamp in contact with the other side of the magnetic disk and fixing the magnetic disk. An O-ring is interposed between a flange formed at an outer circumference of the hub and the magnetic disk, and a spacer is interposed between the magnetic disk and the O-ring. Thus an upper surface of the hub is in contact with an under surface of the clamp and defines a vertical position of the magnetic disk.