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. 22, 2011
Filed:
May. 09, 2007
Kazuyoshi Hanada, Kanagawa, JP;
Masaru Muranishi, Kanagawa, JP;
Takashi Matsuki, Kanagawa-ken, JP;
Yuuji Ishima, Kanagawa, JP;
Kazuyoshi Hanada, Kanagawa, JP;
Masaru Muranishi, Kanagawa, JP;
Takashi Matsuki, Kanagawa-ken, JP;
Yuuji Ishima, Kanagawa, JP;
Hitachi Global Technologies Netherlands B.V., Amsterdam, NL;
Abstract
An embodiment of a magnetic disk apparatus in accordance with the present invention includes a magnetic recording medium, a magnetic head assembly having a magnetic head which reads and writes data on the magnetic recording medium, and a motor coil assembly rotationally driving a spindle motor rotation body, in which plural motor coils are arranged on a circumference around the rotation center of the spindle motor rotation body so that intervals in the circumferential direction are equal, in a stator base surrounding a periphery of the spindle motor rotation body and having a shape in which a prescribed moving locus portion of at least the magnetic head assembly is cut out.