Title: Resilient torsion dampeners for clutch discs

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Abstract: The present invention relates to torsion-damping devices for coupling two members together for rotation with an elastically-damped relative angular oscillation, one member comprising a central plate provided with passage means while the other member comprises a plurality of lateral plates disposed on each side of said central plate and coupled together by cross-braces adapted to pass through said passage means with an angular play which defines the amplitude of said oscillations in both directions of rotation, windows being formed opposite each other in said lateral plates so as to receive torsion-damping means such as springs for coupling the central and lateral plates together for rotation while offering an elastic resistance to said oscillations, said passage means being each provided with a circumferential extension sufficient to permit the corresponding cross-brace to penetrate, at least partially, into the overall contour of the nearest windows of said central plate, said overall contour being defined as that which radially and circumferentially envelops the corresponding spring when said damping device is in the position of rest.


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