Abstract: The invention is concerned with a torsion damping device, of the kind comprising two coaxial parts which are mounted so as to be rotatable with respect to one another against the action of circumferentially acting resilient members, with a phasing ring operatively connected between the resilient members so that the resilient members are effectively mounted for operation in series with each other. The phasing ring is maintained in a radial relationship by a plurality of pads, which being separate from each other, are spaced apart circumferentially, with each pad being individually secured to an appropriate one of the coaxial parts. The pads are preferably made from a synthetic material. The invention is especially applicable to clutches of the lock up type for use in hydrokinetic coupling apparatus for automobiles.

Abstract: The invention relates to a motor vehicle transmission of the kind incorporating a hydraulic coupling device such as a torque converter and a lock-up clutch. The transmission comprises, between an input shaft and an output shaft, a hydraulic coupling having impeller and turbine wheels and a clutch which provides direct drive between the shafts when engaged. The clutch has a friction coupling element for frictionally engaging an input element integral in rotation with the input shaft, and a torsion damping assembly.According to the invention, a tab connection is used between the friction coupling element an output element rotatable with the output shaft.