Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1987-12-16
1989-02-07
Kashnikow, Andres
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
248562, 267219, F16F 1504, B60G 1504, F16M 1300
Patent
active
048026581
ABSTRACT:
A vibration isolating apparatus is interposed between a vibration generating portion and a vibration receiving portion. The apparatus includes a main body which has a portion thereof constituted by a resilient member. The main body is provided with a liquid chamber which is capable of being expanded and contracted. The liquid chamber is divided by a partition member into small liquid chambers which are communicated with each other through an orifice. The orifice is able to absorb low-frequency vibrations but unable to absorb high-frequency vibrations. For this reason, a resilient membrane is provided between the small liquid chambers in such a manner as to suppress the rise in pressure inside the small liquid chambers so that high-frequency vibrations are also absorbed. It is possible to enhance the high-frequency vibration absorbing effect by providing, together with the resilient membrane, an opening means having a cross-sectional opening area which is larger than that of the orifice but smaller than the effective cross-sectional opening area of the resilient membrane.
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Noguchi Takeshi
Ushijima Takao
Bridgestone Corporation
Kashnikow Andres
Oberleitner Robert J.
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