Invention Grant
- Patent Title: Fluid-filled cylindrical vibration-damping device
- Patent Title (中): 流体填充圆柱形减振装置
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Application No.: US12320925Application Date: 2009-02-09
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Publication No.: US08128075B2Publication Date: 2012-03-06
- Inventor: Kazuhiko Kato , Takashi Kume
- Applicant: Kazuhiko Kato , Takashi Kume
- Applicant Address: JP Komaki-shi
- Assignee: Tokai Rubber Industries, Ltd.
- Current Assignee: Tokai Rubber Industries, Ltd.
- Current Assignee Address: JP Komaki-shi
- Agency: Oliff & Berridge, PLC
- Priority: JP2008-030148 20080212
- Main IPC: F16F5/00
- IPC: F16F5/00

Abstract:
A fluid filled cylindrical vibration damping device having a main rubber elastic body elastically connecting an inner shaft member and an intermediate cylindrical member, wherein base wall portions of either of a pair of pocket portions are constituted by the main rubber elastic body to actively rise opposing positive/negative pressure fluctuations in a pair of fluid chambers at times of vibration input across the inner shaft member and the outer cylindrical member; a low-frequency orifice passage and a high-frequency orifice passage are provided; and the high-frequency orifice passage is provided in an aperture section thereof leading to at least one of the pair of fluid chambers with a moveable film adapted to limit fluid flow through the high-frequency orifice passage on the basis of displacement and/or deformation thereof.
Public/Granted literature
- US20090200719A1 Fluid-filled cylindrical vibration-damping device Public/Granted day:2009-08-13
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