Patent ID: 6601835
Filing Date: 2003-08-05
Classification: F16F

Abstract:
A hydraulic antivibration support for interconnecting first and second rigid elements to damp vibration between said elements, the support comprising:first and second rigid strength members for fixing respectively to the first and second rigid elements; an elastomer body interconnecting the first and second strength members; a hydraulic working chamber filled with liquid, and defined at least in part by the elastomer body; and a flexible bellows of elastomer material defining at least part of a hydraulic compensation chamber filled with liquid which communicates with said working chamber via a constricted passage, said bellows presenting a central portion secured to a member carried by the second strength member and a periphery secured to said second strength member, and said bellows presenting a fold of generally annular shape centered on the central axis and projecting into the compensation chamber around said central portion of the bellows over a certain height up to a ridge of generally annular shape, wherein the fold presents a shape that is not circularly symmetrical about the central axis, and wherein the fold presents locally at least one depression having a concave side facing towards the compensation chamber.