Semi-active isolator
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United States of America Patent
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Sep 19, 2006
Grant Date -
Apr 27, 2006
app pub date -
Oct 25, 2004
filing date -
Oct 25, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A shock and vibration isolator that includes a double acting mechanical spring assembly that is mounted to act in parallel with a fluid or liquid spring assembly. The mechanical spring is arranged to provide a first spring rate over a first displacement range and a second spring rate over a further second displacement range. The liquid spring is connected to an accumulator by control circuitry that is under the control of a microprocessor to release stored energy which combines with that of the mechanical spring to rapidly dissipate the input G forces to a level sufficient to protect a substructure.
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