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United States of America
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Issued Date -
Mar 5, 2020
app pub date -
Dec 7, 2017
filing date -
Dec 7, 2017
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Abstract
A damper is provided on an upper frame which is a main vibrating body supported on upper portions of front links and rear links of a frame link mechanism, so as to be a sub-vibrating body which generates vibration whose behavior is different from that of vibration of the upper frame caused by the rotary motion of the front links and the rear links. When the upper frame is vibrated by input vibration, since the damper exhibits the different vibration behavior, energy of the input vibration not only is distributed as vibrational energy of the upper frame and heat energy generated by the elongation and contraction of the damper but also is consumed as energy which vibrates the damper itself provided as the vibrating body. Such arrangement and configuration of the damper improve basic performance of vibration absorbency and impact absorbency of the suspension and achieves a reduction in thickness.
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