Fluid filled vibration isolator having plural tunable dynamic stiffnesses

Abstract From the Canadian patent

Richard P. Thorn Erie, Pennsylvania, Abstract of the Disclosure A fluid filled vibration isolator having several dynamic stiffness levels at different amplitudes in a low frequency range is provided. The vibration isolator has opposed chambers in continuous fluid communication via an elongate main inertia track passageway and a main decoupler which cooperate with auxiliary inertias extending in fluid parallel relation with the main inertia passageway and in fluid series relation with the main decoupler to provide a low frequency small amplitude dynamic stiffness which is capable of being independently tuned relative to the low frequency large amplitude maximum dynamic damping stiffness.