Vibration attenuation
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United States of America Patent
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-
Oct 24, 1989
Grant Date -
N/A
app pub date -
Mar 31, 1987
filing date -
Apr 4, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For use, for example, in mounting a personnel accommodation module on an offshore drilling rig to attenuate the transmission of vibration use is made of an anti-vibration mounting comprising a rigid fluid container having an opening, a rigid support member for closing at least a part of that opening, a flexible seal comprising at least one element of elastomeric material arranged to extend between confronting surfaces of the fluid container and rigid support member thereby to form a fluid chamber within the anti-vibration mounting, liquid supply passage for the flow of liquid to and from that chamber, and gas supply passage for the flow of gas to and from that chamber, the liquid and gas supply passage being independent of one another whereby the quantities of liquid and gas within the chamber may be varied independently by flow through the passage.
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