Patent ID: 7040607
Filing Date: 2006-05-09
Classification: F16F

Abstract:
1. A hydraulic vibration-damping support designed to be interposed for vibration-damping purposes between first and second rigid elements, said vibration-damping support comprising: first and second strength members serving to be fastened to the two rigid elements; a rigid partition comprising at least one plate; an elastomer body which connects the two strength members together and which co-operates with the partition to define a working chamber filled with liquid; first and second flexible pouches which co-operate with said rigid partition to define respectively a compensation chamber and an additional hydraulic chamber, which chambers are adjacent and liquid-filled, the compensation chamber being connected to the working chamber via a first constricted passageway filled with liquid and that has a first resonant frequency of less than 20 Hz, and the additional hydraulic chamber being connected to the working chamber via a second constricted passageway that has a second resonant frequency lying in the range 20 Hz to 80 Hz; and a cup co-operating with said partition to define a pneumatic chamber formed around the second pouch; wherein said plate is secured to a tube that extends inside the second flexible pouch and defines the second constricted passageway, said tube being surrounded radially by the side wall of the cup, a portion of the second pouch lying between the tube and said side wall.