Invention Grant
- Patent Title: Fluid bearing apparatus
- Patent Title (中): 流体轴承装置
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Application No.: US11816058Application Date: 2006-01-11
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Publication No.: US08746978B2Publication Date: 2014-06-10
- Inventor: Nobuyoshi Yamashita , Toshiyuki Mizutani , Tetsuya Kurimura , Kiyoshi Shimizu , Yoshitaka Kabata , Masatoshi Tanigawa , Eiichi Fujita , Koji Yamagata , Masato Utiumi
- Applicant: Nobuyoshi Yamashita , Toshiyuki Mizutani , Tetsuya Kurimura , Kiyoshi Shimizu , Yoshitaka Kabata , Masatoshi Tanigawa , Eiichi Fujita , Koji Yamagata , Masato Utiumi
- 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: JP2005-034225 20050210; JP2005-046041 20050222
- International Application: PCT/JP2006/300235 WO 20060111
- International Announcement: WO2006/085426 WO 20060817
- Main IPC: F16C32/06
- IPC: F16C32/06

Abstract:
A fluid bearing apparatus includes a housing 7 which has a cylindrical shape having a fixing face 7c for fixing the outer circumferential surface 8b of a bearing sleeve 8, and axial circulation grooves 7d for bringing both end faces 8c, 8d of the bearing sleeve 8 into circulation on the inner periphery by forging. A groove molding portion 18a2 is provided on the outer circumference of a rod 18 which serves as a forming mold for the inner periphery of the housing 7, and the circulation grooves 7d are formed by forging with this groove molding portion 18a2. Moreover, after a sealing face 107d and a cylindrical outer circumferential surface 107e provided on the outer periphery of the housing 107 are formed by forging, an inner circumferential surface 107c is formed by forging.
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