Invention Grant
- Patent Title: Vibration damping device and vehicle seat provided with the vibration damping device
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Application No.: US15785226Application Date: 2017-10-16
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Publication No.: US10252649B2Publication Date: 2019-04-09
- Inventor: Yoshitaka Sasaki , Yuji Tokiwa , Katsuji Goto , Yoshinori Otake , Masakazu Ando
- Applicant: NHK SPRING CO., LTD.
- Applicant Address: JP Yokohama-shi, Kanagawa
- Assignee: NHK Spring Co., Ltd.
- Current Assignee: NHK Spring Co., Ltd.
- Current Assignee Address: JP Yokohama-shi, Kanagawa
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Priority: JP2016-206366 20161020
- Main IPC: B60N2/42
- IPC: B60N2/42 ; B60N2/427 ; B60N2/54 ; B60N2/50 ; F16F7/116 ; B60N2/68

Abstract:
A vibration damping device comprises: a spindle member through which a shaft portion is inserted, the spindle member being movable along a length direction of the shaft portion; a first coil spring disposed between the spindle member and one end portion of the shaft portion in the length direction, the one end portion of the shaft portion being inserted through the first coil spring, and the first coil spring urging the spindle member toward a side of another end portion of the shaft portion in the length direction; and a second coil spring disposed between the another end portion of the shaft portion and the spindle member, the another end portion of the shaft portion being inserted through the second coil spring, and the second coil spring urging the spindle member toward a side of the one end portion of the shaft portion.
Public/Granted literature
- US20180111525A1 VIBRATION DAMPING DEVICE AND VEHICLE SEAT PROVIDED WITH THE VIBRATION DAMPING DEVICE Public/Granted day:2018-04-26
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