Patent ID: 7635116
Filing Date: 2009-12-22
Classification: B29C,B29K,B29L,F16F,Y10T

Abstract:
1. A method of manufacturing an antivibration device for being interposed between first and second elements for damping and connection purposes, and antivibration device comprising a hydraulic element, itself comprising: first and second strength members adapted to be fastened respectively to the first and second elements, the second strength member being annular and centered on a central axis: an elastomer body interconnecting the first and second strength members, said elastomer body being substantially bell-shaped and extending along said central axis between a top secured to the first strength member and an annular base, said annular base being centered on said central axis and secured to the second strength member; and a leaktight hydraulic compartment filled with liquid, defined by the elastomer body and by a flexible closure wall fastened to the second strength member by at least one radial closure zone which is centered on said central axis, said hydraulic compartment comprising: firstly a working chamber filled with liquid and defined by the elastomer body; and secondly a compensation chamber filled with liquid, separated from the working chamber by a partition which is substantially perpendicular to the central axis and which is fixed to the annular base of the elastomer body, said compensation chamber communicating with the working chamber, said compensation chamber being defined at least in part by the closure wall, said working chamber being superposed to said compensation chamber along the central axis; the method presenting at least the following steps: