Societe Anonyme Francaise Du Ferodo

Marie Alfred De Gennes

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.

Resilient torsion dampeners for clutch discs

An improved disc-brake, more particularly intended for automobile vehicles, having a reduced number of component parts, easier assembly and lower production cost. The brake is of the kind comprising a fixed support, a disc keyed on a rotatable shaft to be braked, two brake-shoes disposed on each side of the disc and movable perpendicularly to the plane of said disc, a transfer member movable perpendicularly to the plane of the disc, a hydraulic control unit adapted to act directly on a first brake-shoe and on the second brake-shoe through the intermediary of the transfer member, and an elastic device for urging the transfer member into abutment against retention stops formed on the fixed support. Two of the retention stops against which the transfer member is in abutment are constituted by brackets carried by the fixed support from which they project on each side of the transfer member, this transfer member further comprising laterally projecting lugs for co-operating with the brackets.

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Senlis, France

Marie Alfred De Gennes