Rubber bushing that suppresses vibrations hydraulically

In a rubber bushing that suppresses vibrations hydraulically, said bushing having a central longitudinal axis and being preponderantly subjected to a load perpendicular to said axis, said bushing comprising two axially coincident supporting sleeves arranged one inside the other and forming an inner sleeve and an outer sleeve, each sleeve having two opposite ends, and a resilient rubber element retained between the sleeves, said resilient element including at least two essentially radially projecting webs which demarcate, in conjunction with walls at each end of the sleeves and with the outer sleeve, at least two working chambers that are full of fluid and communicate through connecting channels, wherein the webs are resiliently compressed to less than their nominal size between the two retaining supporting sleeves, wherein ends of the webs are outwardly secured in the vicinity of the walls to mechanical rings demarcating, in conjunction with the outer sleeve, annular channels that constitute part of the connecting channels, and wherein the annular channels, extending around each end of the resilient element, terminate at and conduct fluid into a working chamber inside the element, the improvement wherein the annular channels communicate and conduct fluid through a straight channel that essentially parallels said longitudinal axis, diverges from axial to radial and opens into the annular channels at each end of the sleeves, and wherein the straight channel is created and demarcated by metal-reinforced rubber webs that constitute radial partitions in the resilient element.