Abstract: A torsional vibration damper assembly for use in a torsion coupling or clutch arrangement to provide a low spring rate, high deflection amplitude characteristic. The assembly includes an input means having driving members operatively connected thereto, a hub assembly adapted to be operatively connected to an output means and including a housing containing at least one hub barrel and drive plates secured thereto, a plurality of floating spacers, and a plurality of compression spring sets which are arranged in two groups operating in parallel with the spring sets of each group operating in series.

Abstract: A vibration damper assembly used in a torsional coupling between driving and driven members providing a low rate, high amplitude deflection, wherein the damper assembly includes a hub operatively connected to a driven shaft and having arms, at least one floating equalizer journalled on the hub, drive tangs connected to a driving member, and two or more groups of damper springs interposed between the drive tangs, hub arms and floating equalizers. To separate the damper springs in an equalizer, a spring separator or divider is mounted for limited arcuate movement in opposed arms of the equalizers.

Abstract: A vibration damper assembly for use in a torsional coupling between a driving member and a driven member wherein the damper assembly provides for a very low rate, high amplitude deflection. The vibration damper includes a hub to be received on a driven shaft, two or more groups of springs having multiple springs of the same or various rates within each group operating in series through the use of floating or transfer members movable arcuately relative to the hub, and one or more spring deflection limiting members permitting the tailoring of the damper characteristics more precisely to the requirements of a given coupling assembly.

Abstract: A torsional vibration damper assembly for use in a torsional coupling between a driving member and a driven member wherein the damper assembly provides a very low rate, high amplitude deflection. The damper assembly includes a hub adapted to be connected to a driven shaft and provided with a pair of oppositely extending arms, a driving plate having a pair of driving members cooperating with the hub arms, a pair of floating equalizers journalled onto the hub, and a plurality of damping springs positioned between the arms of the equalizers, the hub arms and the driving members.