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. 15, 2013
Filed:
Oct. 07, 2011
Hiromitsu Goto, Shizuoka, JP;
Ryusuke Sugiki, Shizuoka, JP;
Akira Aoi, Shizuoka, JP;
Abstract
A disk drive device includes a base plate, a hub, and a bearing unit. The bearing unit includes an outer sleeve, an inner sleeve, a shaft, a radial dynamic pressure groove, and a lubricant agent. In the joined portion of the outer sleeve and the hub, there are formed a recessed portion, which is a binding region, where the outer sleeve and the hub are joined together with a hardening resin present between the outer sleeve and the hub and a tilt preventing portion, provided on both the sides of the recessed portion in the axial direction of the outer, which is a raised region that forms a portion narrower than a gap, between the outer sleeve and the hub, corresponding to the recessed portion.