Valeo Corporation

Valedo

Jacky Naudin

Jacques Paquin

Jacques Michon

Dominique Despres

Christian Gay

Gustave Chasseguet

Ciriaco Bonfilio

Bernard Jumel

Jacques Alas

Herve Focqueur

Pierre Casse

A damped double flywheel, in particular for a motor vehicle, comprises two coaxial inertia masses which are mounted for rotation with respect to each other against the action of springs and a viscous damper. The viscous damper comprises a sealed cavity bounded by two cover plates which are joined together through a spacer element. The viscous damper also includes first teeth directed radially inwards and alternating with second teeth which are directed radially outwardly. At least one of the cover members is provided with a recess in the face of the cover member which cooperates with the said second teeth, with the recess facing the latter and being so positioned as to lie against the corresponding tooth during normal operation, but not when the engine is being started or stopped, so that the viscous damper can operate to full effect under these latter conditions.

Damped double flywheel, in particular for a motor vehicle

A torsion damper comprising juxtaposed resilient plates which operate in parallel and are interposed between a support member and a hub. Each resilient plate comprises at least one resiliently deformable arm. The torsion damper has at least two pairs of similar resilient plates. One of the pairs lies between the plates of the other pair and is offset with respect to the other pair by an angle such that the two pairs of plates are radially balanced. The resilient arms of any one pair are aligned with each other.

Device with torsion damping by resilient plates, especially for an

In a damped double flywheel comprising two coaxial inertia masses which are mounted for relative rotation with respect to each other, against the action of springs and a viscous damper having a sealed, fluid-filled, cavity, the viscous damper is mechanically interposed between the two inertia masses, and comprises two closure members which are spaced apart axially by a spacer member so as to define its cavity. Each of the closure members is joined to the spacer member by at least one continuous weld seam.

Damped double flywheel, in particular for automotive vehicles

A damped double flywheel comprises two coaxial inertia masses which are mounted for relative rotation, both against the action of a first series of springs and against the action of a viscous damping means. A damper wheel connects the viscous damping means with the first series of springs, and the latter couple the damper wheel with a first damping control means carried by the first mass. A second series of circumferentially acting springs, of greater stiffness than the first series of springs, couples the damper wheel to a second damping control means which is carried in rotation on the second mass.

A damped double flywheel, for a motor vehicle, comprises two coaxial inertia masses which are mounted for rotation relative to each other against the action of a first series and a second series of springs. One of the inertia masses includes a damper plate having radial arms. An intermeidate pad is interposed radially between each spring of the first series and an associated spring of the other series. The springs are arranged to cooperate in pairs with the radial arms of the damper plate, and are arranged radially outwardly of the outer periphery of the main disc-like portion of the damper plate.

Damped double flywheel for a motor vehicle

A damped flywheel which comprises a primary part and a secondary part rotatably mounted with each other. A first annular component is associated with the primary part. A second annular component is associated with the second part. Resilient springs are disposed between and in engagement with the first and second annular components. The first annular component is mounted to define a dead clearance in which there is no operation of the resilient spring and an abutment defines the range of annular displacement of the dead clearance.

Damped flywheel for an automotive transmission

This present invention is concerned with torsion dampers of the kind comprising two coaxial parts which are mounted for rotation with respect to each other against the action of circumferentially acting resilient means in the form of at least one spiral spring comprising a resiliently deformable arm with an inner carrier element and an outer carrier element, one of which is connected through a profiled coupling with one of the rotatable coaxial parts of the damper, for rotation with it. The other (second) carrier element is coupled with the other coaxial damper part (the second coaxial part) through a gripping action, the second coaxial part being subjected to the action of an axially acting spring element which is engaged axially on the second coaxial part and which urges the second carrier element towards a radial thrust surface formed on the second coaxial part, so as to make contact, directly or indirectly, with the thrust surface. The invention is especially applicable to a damper of a damped double flywheel for an automotive vehicle.

Torsion damper, in particular a damped double flywheel for an automotive

A torsion damping device of the kind comprising two rotatable parts with coil springs interposed between them. At least one friction pad is associated with each spring so as to come into engagement with a contact zone of one of the said coaxial parts. In accordance with the invention, there is associated with each of the friction pads an intermediate resilient member which is radially deformable and which has a first engagement zone for engagement with a turn of the spring, together with a second engagement zone for contact with the friction pad, the intermediate resilient member being interposed radially between the friction pad and the spring.

Torsion damping device with friction pads, in particular for automotive

The present invention is concerned with a double damped flywheel of the kind having springs (40), at least one damper plate (30) and guide rings (17, 18). The double flywheel is characterized by a phasing device having thrust pads each of which is interposed circumferentially between two consecutive ones of the resilient springs, the phasing device being mounted for free rotation with respect to the guide rings. The damper plate is centered directly or indirectly by one of the guide rings or by the damper plate in such a way as to divide each of the resilient springs into two operative elements. The double damped flywheel further comprises inserts mounting the resilient springs pivotally on the thrust pads.

Double damped flywheel, especially for automotive vehicles

The present invention relates to annular diaphragm springs for use in clutches and speed changers for automobile vehicles, of the kind having radial fingers separated by orifices alternating with the fingers. According to the invention at least two fingers are each equipped with a fold delimiting a lateral part of the orifice. This stiffens the fingers without increasing the thickness of the diaphragm.

Annular diaphragm spring for use in an automobile clutch

A torsion damping device for an automotive vehicle includes two coaxial parts which are mounted for rotation relative to each other. One of these coaxial parts has through openings and the other incorporates a number of arms, and main resilient members mounted in these through openings bear circumferentially on insert members, being arranged to act through the latter against the arms. Centering members are also provided between two adjacent main resilient members. The centering member comprises a spacer member extending between two of the through openings, together with a resilient member acting between the spacer member and the corresponding arm. The spacer member is divided into two centering fingers, separate from each other but with the resilient centering member extending from one of the centering fingers to the other.

Torsion damping device, in particular for a flywheel type transmission

The present invention is concerned with a double damped flywheel for automotive vehicles having a mass (20) including at least one damper plate (11) and a reaction plate (14). In accordance with the invention, circumferentially acting delayed action coupling means (30, 130), defining a clearance for initial relative rotational displacement, are provided between the reaction plate and the damper plate so as to establish a common rotation of these two plates after the clearance has been taken up.

Double damped flywheel, particularly for automotive vehicles

The present invention is concerned with a double damped flywheel for use in automobiles. The flywheel has two masses which delimit a first sealed cavity. The first sealed cavity is filled with a first fluid and has a resilient spring disposed within its cavity. A viscous damper is mechanically interposed between the two masses and includes a second sealed cavity which is delimited by the two masses. The second sealed cavity is filled with a second fluid which is different from the first fluid. The second sealed cavity is located generally inwardly of the first sealed cavity.

A torsion damping device comprises at least two coaxial parts mounted to move circumferentially relative to one another against the action of elastic units. Inside a coil spring of one elastic unit a stiffer elastic means is housed, comprising in the central zone of the said unit a block of relatively rigid plastic material and two elastic pads each disposed at one of the circumferential ends of the said unit with a predetermined clearance relative to the block.

Torsion damping device

In a clutch suitable for an automobile vehicle, a method of fixing at least one torque transmitting part of the clutch to a clutch plate by means of fixing elements adapted to pass through an opening in the said part and to engage in a blind hole in the said plate, in which the fixing element consists of a stud, adhesive is deposited in the blind hole and/or on the stud, the stud is inserted with a slight play in the blind hole after passing through the opening in the part, and the projecting end of the stud is permanently deformed by means of a tool which spreads the stud to clamp the part.

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Ermont, France

Jacky Naudin