Patent ID: 8641052

Claim:
A suspension device, comprising: an active suspension unit that includes an actuator of linear-motion type and a first fluid pressure damper that is connected to the actuator to extend and retract in the same direction as the actuator; and a second fluid pressure damper arranged in parallel with the active suspension unit, wherein the first fluid pressure damper includes a cylinder and a rod that is inserted inside of the cylinder movably and connected to one extension-retraction operation end of the actuator, the second fluid pressure damper including the cylinder and a hollow rod that is movably inserted inside of the cylinder, installed to an outer circumference of the rod slidably as well as being connected to another extension-retraction operation end of the actuator, wherein a piston slidably inserted to inside of the cylinder is coupled to either one of the rod and the hollow rod, the piston defining two pressure chambers inside of the cylinder, and the other of the rod and the hollow rod is made to move in and out of one of the pressure chambers.