Invention Grant
- Patent Title: Vibration damping for a rotating shaft
- Patent Title (中): 旋转轴的振动阻尼
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Application No.: US10573634Application Date: 2005-10-11
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Publication No.: US07692347B2Publication Date: 2010-04-06
- Inventor: Tsuyoshi Nakajima
- Applicant: Tsuyoshi Nakajima
- Applicant Address: JP Yokohama
- Assignee: Nissan Motor Co., Ltd.
- Current Assignee: Nissan Motor Co., Ltd.
- Current Assignee Address: JP Yokohama
- Agency: Global IP Counselors, LLP
- Priority: JP2004-297391 20041012; JP2005-295449 20051007
- International Application: PCT/IB2005/003015 WO 20051011
- International Announcement: WO2006/051361 WO 20060518
- Main IPC: H02K5/01
- IPC: H02K5/01

Abstract:
The invention provides damping techniques for a rotating shaft. The rotating shaft is supported by rotary bearings. The damping techniques control vibration of the rotating shaft by creating a fluid film in a support element of the rotating shaft. For example, the fluid film may be created between a housing and the rotary bearings. The fluid may be supplied by a pump, and the supply amount of fluid to create the fluid film is relative to the rotational velocity of the shaft. Vibration can be prevented for every operational rotational velocity of the rotating shaft. In some embodiments, the rotating shaft may be powered by or part of an electric motor for a vehicle.
Public/Granted literature
- US20090015085A1 Vibration damping for a rotating shaft Public/Granted day:2009-01-15
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