Invention Grant
- Patent Title: Hydraulic damper
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Application No.: US14911163Application Date: 2014-08-26
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Publication No.: US10195918B2Publication Date: 2019-02-05
- Inventor: Hironao Watanabe
- Applicant: Tein, Inc.
- Applicant Address: JP Kanagawa
- Assignee: Tein, Inc.
- Current Assignee: Tein, Inc.
- Current Assignee Address: JP Kanagawa
- Agency: Schwegman Lundberg & Woessner, P.A.
- Priority: JP2013-174397 20130826
- International Application: PCT/JP2014/072262 WO 20140826
- International Announcement: WO2015/029984 WO 20150305
- Main IPC: F16F13/00
- IPC: F16F13/00 ; B60G17/08 ; F16F9/49 ; F16F9/512 ; F16F9/58 ; B60G15/06 ; F16F9/06

Abstract:
A position-and-velocity dependent hydraulic damper is provided. The hydraulic damper has piston valve fixed to a tip of a piston rod, a base valve, and a reservoir chamber. The base valve has a compression side port. Between a first valve and the base valve, a first spiral spring is provided, and between the first valve and the piston valve, a second spiral spring is provided. The compression side port is closed by the first valve around the maximum compression state, reducing the flow rate of oil to the reservoir chamber. A second valve passing through the centers of the first valve and the base valve adjusts the flow rate of the oil to the reservoir chamber with a pressure equal to or higher than a prescribed level of an oil chamber.
Public/Granted literature
- US10124645B2 Hydraulic damper Public/Granted day:2018-11-13
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