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. 18, 2014
Filed:
Aug. 20, 2009
Masaharu Hori, Kuwana, JP;
Masaharu Hori, Kuwana, JP;
NTN Corporation, Osaka-shi, Osaka, JP;
Abstract
To increase fixation strength of a bearing sleeve with respect to a bottomed cylindrical housing, a fluid dynamic bearing device () is provided with a bottomed cylindrical housing (), a bearing sleeve () fixed to an inner periphery thereof, and a shaft member () inserted along an inner periphery of the bearing sleeve (). An adhesive pool () is provided between an inner peripheral surface () of a smaller diameter portion () of the housing () and an outer peripheral surface () of the bearing sleeve (), which are opposed to each other. Further, an inner peripheral chamfer () continuous with the adhesive pool () is provided on an inner peripheral portion of the housing (), and a first tapered space () formed between the inner peripheral chamfer () and the bearing sleeve () is sealed with an adhesive ().