Torsion damping device, in particular for a flywheel type transmission of an automotive vehicle

A torsion damping device comprising two coaxial parts, means mounting said coaxial parts for relative rotation with respect to each other, and means defining a predetermined range of angular displacement whereby to limit the extent of said relative rotation, one of said coaxial parts having a plurality of through openings formed therein and the other of the said coaxial parts having arms, the device further including a plurality of main resilient members each of which is disposed in a respective one of the said through openings in said one coaxial part whereby to engage with the said arms either directly or indirectly, the device further including centering means associated with at least one of the said arms, wherein the said centering means include a spacer member, extending circumferentially between two consecutive ones of said through openings of said one coaxial part, and a resilient centering member arranged between the said spacer member and the appropriate said arm, the said spacer member being divided into two centering fingers separate from each other, with one centering finger corresponding to each of the associated said through openings, and with the resilient centering member extending from one of the said centering fingers to the other.