Invention Grant
- Patent Title: Fluid dynamic bearing device
- Patent Title (中): 流体动力轴承装置
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Application No.: US13435915Application Date: 2012-03-30
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Publication No.: US08931175B2Publication Date: 2015-01-13
- Inventor: Natsuhiko Mori , Nobuyoshi Yamashita , Fuminori Satoji , Isao Komori , Toshiyuki Mizutani , Masafumi Okuma , Kenichi Mitani
- Applicant: Natsuhiko Mori , Nobuyoshi Yamashita , Fuminori Satoji , Isao Komori , Toshiyuki Mizutani , Masafumi Okuma , Kenichi Mitani
- Applicant Address: JP Osaka-shi
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2005-145362 20050518; JP2005-145370 20050518; JP2005-145373 20050518; JP2005-145506 20050518; JP2005-145517 20050518; JP2005-145521 20050518
- Main IPC: F16C32/06
- IPC: F16C32/06 ; F16C33/10 ; F16C17/02 ; F16C17/10
Abstract:
It is an object of the present invention to provide a bearing member having a highly accurate dynamic pressure generating portion stably at low cost. Dynamic pressure grooves (8a1) and (8a2) are formed as the dynamic pressure generating portions on an inner circumferential surface of the electroforming portion (10) by an electroforming process, and injection molding is performed by using a resin while inserting the electroforming portion (10), thereby forming a bearing member (8). A shaft member (2) is inserted into an inner circumference of the bearing member.
Public/Granted literature
- US20120186983A1 FLUID DYNAMIC BEARING DEVICE Public/Granted day:2012-07-26
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