Invention Grant
US07789566B2 Dynamical pressure bearing device, motor, and recording disc driving device
有权
动力承压装置，电动机和记录盘驱动装置
- Patent Title: Dynamical pressure bearing device, motor, and recording disc driving device
- Patent Title (中): 动力承压装置，电动机和记录盘驱动装置
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Application No.: US11296376Application Date: 2005-12-08
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Publication No.: US07789566B2Publication Date: 2010-09-07
- Inventor: Toshimasa Kobayashi , Masaki Nakamura , Taketo Nishimura , Hisatomu Yamamoto , Hideaki Ogata , Masaharu Ishiwata , Tomoyuki Iga , Yoko Yamagata
- Applicant: Toshimasa Kobayashi , Masaki Nakamura , Taketo Nishimura , Hisatomu Yamamoto , Hideaki Ogata , Masaharu Ishiwata , Tomoyuki Iga , Yoko Yamagata
- Applicant Address: JP Kyoto
- Assignee: Nidec Corporation
- Current Assignee: Nidec Corporation
- Current Assignee Address: JP Kyoto
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2004-356378 20041209
- Main IPC: F16C32/06
- IPC: F16C32/06
Abstract:
There is provided a dynamical pressure bearing device, a motor and a recording drive device. The dynamical pressure bearing device has a shaft having a first bearing surface and a first portion exteriorly adjacent to the first bearing surface; and a sleeve having a second bearing surface and a second portion exteriorly adjacent to the second bearing surface. The sleeve is rotatably engaged with the shaft with a clearance. The oil repellent film includes a fluorine polymer having a perfluoroalkyl group; and a chromogenic substance which makes color development in blue at UV irradiation.
Public/Granted literature
- US20060132968A1 Dynamical pressure bearing device, motor, and recording disc driving device Public/Granted day:2006-06-22
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