Patent ID: 7219781

Claim:
An electromagnetic suspension system comprising: an extensible member including a cylinder and a rod capable of displacement relative to the cylinder in the axial direction of the cylinder; a first cylindrical member connected to the rod so as to be prevented from moving relative to the axial direction of the rod, either one of a coil member and a magnetic member being provided in the first cylindrical member; and a second cylindrical member connected to the cylinder so as to be prevented from moving relative to the axial direction of the cylinder, the other of the coil member and the magnetic member being provided in the second cylindrical member, the second cylindrical member facing either one of an inner side and an outer side of the first cylindrical member, and the second cylindrical member being slidable relative to one of the inner side and the outer side of the first cylindrical member and guided thereby; wherein the first cylindrical member and the second cylindrical member are arranged to obtain at least one of: the first cylindrical member being capable of radial movement or rocking movement relative to the rod; and the second cylindrical member being capable of radial movement or rocking movement relative to the cylinder.