Abstract: A fluid-filled vibration damping device wherein two mutually spaced-apart mounting member are elastically connected by an elastic body, which cooperates with a first movable member to define a primary fluid chamber communicating through an orifice with an auxiliary fluid chamber partially defined by a second movable member, and the first and second movable members partially define respective mutually independent first and second working air chambers on their sides remote from the primary and auxiliary fluid chambers, and are oscillated by periodic change of air pressures in the working air chambers.

Abstract: A vibration damper including (a) an attaching member fixed to a subject member whose vibrations are damped by the vibration damping device, (b) a mass member displaceable relative to the attaching member in a vibration input direction, (c) an elastic connector elastically connecting the mass member to the attaching member and cooperating with the mass member to at least partially define a working chamber, and (d) a structure for defining a fluid passage communicating with the working chamber for changing a pressure of a fluid in the working chamber to thereby cause the mass member to be displaced relative to the attaching member in the vibration input direction.

Abstract: A fluid-filled elastic mount including an elastic body which elastically connects inner and outer support members and partially defines a fluid chamber, an oscillating plate partially defining the fluid chamber and supported by the inner support member, and an electromagnetic drive device having an inner yoke member fixed to the oscillating plate, an annular outer yoke member fixed to the outer support member, a moving permanent magnet fixed to the inner yoke member and cooperating with the yoke members to define a closed magnetic circuit, and an annular stationary coil which is disposed in an annular magnetic gap in the closed magnetic circuit and which is fixed to the outer yoke member, so that the moving permanent magnet is displaced together with the inner yoke member to thereby oscillate the oscillating plate upon energization of the annular stationary coil, while heat generated by the coil is dissipated through the outer yoke.