Fluid-filled elastic bushing having means for limiting elastic deformation of axial end portions of elastic member defining pressure-receiving chamber

A fluid-filled elastic bushing for damping or isolating a vibrational load, comprising:

• an inner sleeve and an outer sleeve disposed radially outwardly of said inner sleeve;
• a generally annular elastic member formed between and elastically connecting said inner and outer sleeves, so as to provide an assembly having a plurality of fluid chambers which are spaced apart from each other in a circumferential direction of said sleeves and are filled with a non-compressible fluid, said assembly further having orifice means for fluid communication between said fluid chambers;
• a wing member disposed in at least one of said plurality of fluid chambers to which the vibrational load is applied, said wing member being supported by one of said inner and outer sleeves and said elastic member, said wing member cooperating with said assembly to define a restricted portion within each of said at least one fluid chamber;
• and
• a restrictor member fixedly disposed so as to extend in a portion of said elastic member in an axial direction of the elastic bushing, for limiting axial elastic deformation of said elastic member at axial end portions thereof which define opposite ends of said each fluid chamber as viewed in said axial direction of the elastic bushing, and minimizing changes to the restricted portion.