Patent ID: 7314213

Claim:
A fluid-filled vibration damping device comprising: an inner shaft with a solid structure; an outer cylinder disposed about the inner shaft with a certain radial distance therebetween; a rubber elastic body interposed between and elastically connecting the inner shaft and the outer cylinder; a pair of fluid chambers in which a non-compressible fluid is sealed are formed facing on both sides, in the axis-perpendicular direction, of the inner shaft; an orifice passage through which the pair of fluid chambers communicate with each other; a through hole formed through the inner shaft in the axis-perpendicular direction; and a movable rubber layer fluid-tightly closing the through hole and being exposed at opposite major surfaces thereof to the pair of fluid chambers, respectively so that pressure in the respective fluid chambers are exerted against the major surfaces of the movable rubber layer, wherein the movable rubber layer is integrally formed with the rubber elastic body.