Hydraulic vibration-damping support

A hydraulic vibration-damping support serving to interconnect first and second rigid elements so as to damp and filter vibration between said elements, the support comprising:

• first and second rigid strength members serving to be fixed to respective ones of the first and second rigid elements to be interconnected;
• an elastomer body interconnecting the first and second strength members;
• a first chamber filled with liquid, and defined at least in part by the elastomer body;
• and
• a decoupling device comprising firstly first and second parallel gratings that are generally plane in shape, and secondly a decoupling valve member which is in the form of an elastomer pad and which has first and second faces provided with projecting studs made of elastomer, the decoupling valve member being mounted with clearance between the first and second gratings with the first and second faces of said decoupling valve member disposed facing respective ones of the first and second gratings, and said decoupling valve member being suitable for closing off said gratings, said first grating communicating with the first chamber and the second grating communicating with a second chamber suitable for enabling the decoupling valve member to vibrate freely between the two gratings when the first and second strength members are subjected to relative vibratory movements;
• wherein the studs of the decoupling valve member are disposed so that, in the absence of relative vibration between the first and second strength members, the decoupling valve member is held in a rest position in which said valve member has a midplane disposed on a slant relative to the first and second gratings.