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. 14, 2008
Filed:
May. 31, 2006
Naoshi Kainoh, Ehime, JP;
Akihito Shirai, Ehime, JP;
Shigeo Obata, Hyogo, JP;
Youichi Nishimoto, Ehime, JP;
Junichi Nakamura, Ehime, JP;
Tomohiro Haga, Ehime, JP;
Naoshi Kainoh, Ehime, JP;
Akihito Shirai, Ehime, JP;
Shigeo Obata, Hyogo, JP;
Youichi Nishimoto, Ehime, JP;
Junichi Nakamura, Ehime, JP;
Tomohiro Haga, Ehime, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A hydrodynamic bearing device which can improve workability of injecting a lube repellant and effectively prevent leakage of a lubricant, a method for manufacturing the same, a spindle motor, and a recording and reproduction apparatus are provided. A hydrodynamic bearing deviceincludes a lube repellantwhich is applied in a circular shape by a predetermined distance in a radial direction from a portion of an upper surface of a second thrust flangewhere it is connected to a shaftand a lube repellantwhich is applied in a circular shape on an outer peripheral surface of the second thrust flangebelow from an upper end in the radial direction by a predetermined distance. The lube repellantis applied near the upper end portion in a gap formed between the outer peripheral surface of the second thrust flangeand an inner peripheral surface of an outer sleeve