Einheitliche Reibungsbaugruppe, Herstellungsverfahren für eine solche Baugruppe und Drehschwingungsdämpfer mit einer derartigen Baugruppe

A torsion damper, especially for a motor vehicle friction clutch, includes a friction unit, or unitary friction assembly, that comprises a guide ring, at least one drive ring, and axially acting resilient members in biassing relationship on the drive ring. The drive ring and these resilient members are mounted in a cavity which is bounded by the guide ring and by a closure ring which is secured to the guide ring. The closure ring is formed at its inner periphery with at least two axial stop lugs for preventing rotation. The stop lug penetrates into an associated aperture which is formed in the guide ring.