Abstract: The present invention relates hydraulic mounts for mounting between two rigid elements, such as an engine and a vehicle frame, so as to damp and filter vibrations occurring essentially in a main direction, between said elements, the mount comprising: first and second brackets intended to be fixed respectively to the first and second rigid elements, a primary elastomeric member connecting the first and second brackets, a rate chamber having a volume filled with fluid and delimited with a secondary elastomeric member having at least a first and a second walls movable respectively with said first and second brackets when said first and second brackets moves one with regard to the other, at least one bellow communicating with said rate chamber, each bellow and the rate chamber being able to bulge independently of the primary elastomeric member deformation, and a selectively operable control valving unit for controlling the fluid motion between said rate chamber and each bellow.

Abstract: The present invention relates hydraulic mounts for mounting between two rigid elements, such as an engine and a vehicle frame, so as to damp and filter vibrations occurring essentially in a main direction, between said elements, the mount comprising: first and second brackets intended to be fixed respectively to the first and second rigid elements, a primary elastomeric member connecting the first and second brackets, a rate chamber having a volume filled with fluid and delimited with a secondary elastomeric member having at least a first and a second walls movable respectively with said first and second brackets when said first and second brackets moves one with regard to the other, at least one bellow communicating with said rate chamber, each bellow and the rate chamber being able to bulge independently of the primary elastomeric member deformation, and a selectively operable control valving unit for controlling the fluid motion between said rate chamber and each bellow.