Abstract: The invention concerns a clutch mechanism comprising a support part (8) bearing at its outer periphery fixing brackets (7) in contact with the inner surface of the stop brackets (5) of a cover (2), bearing pivotedly the clutch levers (42), some of which are in contact with the support part (8) inner periphery. The invention is applicable to motor vehicles.

Abstract: The invention concerns a clutch mechanism, in particular for motor vehicle, comprising a cover (2), a pressure plate (1), support means (3) borne by the pressure plate (1), clutching means (4, 41), and a wear take-up device (30, 200) comprising a box (30) mounted in a housing (20) of the cover (2). The invention is characterised in that the cover bears at least one pre-balancing or balancing rivet (201) to compensate the imbalance caused by the wear take-up device box (30).

Abstract: The invention concerns a clutch mechanism comprising a wear take-up device with a ramp (32) ring (330) coupled in rotation into axial mobility with an intermediate part (310) equipped with a tooting (31) engaged in an endless screw (36) integral with a cover. The invention is applicable to a motor vehicle.

Abstract: The invention concerns a wear take-up mechanism comprising a housing (10) borne by the cover (52) and ramp means (54) set between the means (14) supporting the clutch shifting means and a pressure plate (51). The cassette has two side wings (65, 66) each provided with a hole (61), said holes (61) being axially offset mutually for mounting a rotating endless screw (63) capable of driving in rotation the ramp means (54) and extended by a pin (67). The invention is applicable to motor vehicles.

Abstract: A clutch mechanism comprising a wear take-up device including a ring with ramps bearing an outer toothing and set between a pressure plate and support member (engagement zones) to constitute a pressure plate with varying thickness between its friction surface and the support member. A box having a worm screw cooperates with the toothing. A brake strap borne by the pressure plate and cooperating with the ramp ring is arranged such that in the vent of axial vibrations or overtravel of the clutch during declutching, the ramps do not rotate and there is no wear take-up.

Abstract: A friction clutch for a motor vehicle having a clutching friction member and clutching mechanism with a cover and a clutch thrust plate. A resilient clutch member and disengaging gear is disposed between the rear surface of the thrust plate and the cover for moving the clutch thrust plate towards the cover. The clutch is provided with a wear adjustment device, a resilient servo member and a resilient smooth engagement member. The resilient servo member is mounted outside the clutching friction member. The load pressure feature combining the load pressure features of the resilient servo member and smooth engagement member globally follows the load pressure feature of an axially operating resilient clutching member.

Abstract: A clutch mechanism, in particular for motor vehicles, comprising a cover (8) with a base (80), a clutch thrust plate (3) with front friction surface (30) co-operating with a clutch friction (2), and, set between the clutch thrust plate (3) rear surface (36) and the cover (8) base (80), resilient clutch means with axial action (4, 6) axially stressing the clutch thrust plate (3) in a direction opposite to the cover (8) base (80) and a declutching device (7) to counter at will the action of said resilient clutch means (4, 6): the resilient clutch means (4, 6) comprise two Belleville washers (4, 6) series-mounted between the clutch thrust plate (3) and the cover (8), and one (4) of the Belleville washers (4, 6) is in contact at its outer periphery with the clutch thrust plate (3), while the other (6) rests at its outer periphery on the cover (8), said washers (4, 6) sloping inversely, means for transmitting the force (5) carried by the declutching device (7) being incorporated between the inner peripheral zones

Abstract: In the liner support disc adapted to constitute a clutch friction wheel, especially for a motor vehicle, of the kind comprising a central portion (16) and a peripheral portion divided into radial blades (672) alternating in the circumferential direction with a series of radial tongues (671) in the same plane as the central portion (16) of the liner support disc, in which the blades (672) have, joined by bent portions (421), a central support zone (423) and two peripheral support zones (422) on either side of the zone (423), the peripheral zones (422) being offset axially with respect to the central zone (423), at least some of the tongues (671) have at least one support zone (622) offset axially towards the central zone of the blades (672) by virtue of a connecting bent portion (621).

Abstract: A friction clutch, especially for a motor vehicle, has a clutch friction wheel which includes a liner support disc having a central portion and a peripheral portion which is divided into blades, with friction liners being carried on both sides of the support disc and secured to these blades. At least some of the blades of the liner support disc are of tripod type, having at least one central support surface zone and two peripheral support surface zones. The central zone is connected firstly to the central portion of the support disc through a tangential fold, and secondly to the peripheral zones of the blade through oblique folds.

Abstract: A clutch friction wheel for a motor vehicle clutch comprises a support having slotted lobes projecting radially from an inner portion of the support. Friction pads are arranged back-to-back on either side of each lobe. Springs are interposed between two associated friction pads. The springs consist of profiled fins such as to define a wavy support having, for contact with one friction pad of each pair, a central zone having free circumferential end portions, and, for contact with the other friction pad of the same pair, marginal portions. One of these marginal portions projects from and is integral with the inner portion of the support.

Abstract: A diaphragm clutch mechanism including a cover plate, a diaphragm, an assembly for mounting the diaphragm pivotally on the cover plate, and at least one pressure plate. The assembly comprises a crown ring and a plurality of retaining lugs on the cover plate. Each retaining lug has at its free end a bent-over portion defining a locating bend. The crown ring is interposed between the diaphragm and a support crown, which bears against the locating bends of the retaining lugs.

Abstract: A torsion damper comprises two coaxial parts, one of which comprises a damper plate and a hub, coaxial with each other and having respective complementary sets of teeth. A resilient member in the form of a shock absorbing ring is provided in the same coaxial part of the damper and is coupled in rotation to the damper plate. The shock absorbing ring comprises at least one substantially rigid first member, on which the set of complementary teeth is formed, together with at least one resiliently deformable second member for coupling in rotation with the damper plate.

Abstract: A lock-up clutch for a hydrokinetic power transmission apparatus comprises firstly a coupling element, and secondly a torsion damping device comprising two coaxial parts which are mounted for relative rotation of one with respect to the other against the action of circumferentially acting resilient members, with one of the said coaxial parts comprising two retaining members so shaped as to retain the resilient members in position. The coupling element constitutes one of the retaining members, by virtue of an outer flange formed for this purpose on its outer periphery. This outer flange is so shaped as to receive within it part of the resilient members in such a way that the coupling member constitutes a guide ring.

Abstract: A clutch wheel for a plate type friction clutch comprises a clutch disc carrying a plurality of friction pads spaced coaxially around it. Each friction pad consists of two pad elements arranged back to back and movable axially with respect to each other against the action of a Belleville ring inserted between them. This axial movement is controlled within predetermined limits by abutment means consisting of cooperating elements of the two friction pads, or of at least one of the friction pads and the clutch disc. The Belleville ring is precompressed in such a way that, within the limits of the axial movement defined by the abutment means, it works only on a part of its characteristic curve in which the reaction force which it exerts is substantially constant.

Abstract: A friction disc comprises a circular clutch plate with a plurality of friction liners distributed around the clutch plate coaxially with the latter. Each friction liner is retained on the clutch plate, and comprises two pads. One of these pads is on one side of the clutch disc, and the other pad is on the other side. At least one of the pads of each friction liner has a rolling surface for engagement with the corresponding side of the clutch disc, such that the pad concerned is able to tilt with respect to the clutch plate.

Abstract: A friction disc, in particular for a motor vehicle clutch, comprises a carrier member in the form of a simple thin metal radial disc, with a plurality of friction pads distributed on the carrier disc coaxially with it. Each friction pad is fastened to the carrier disc by at least one fastening member, and is in the form of two pad portions arranged respectively on either side of the carrier disc. The carrier disc is formed with windows, with each friction pad being mounted in line with a respective one of these windows, in such a way that it can at least partially engage in the window at its periphery. The window defines a tongue which is fixed with respect to the carrier disc and extends into the window, and the fastening member, or each fastening member, for each friction pad is secured to the corresponding tongue.

Abstract: A fluid coupling apparatus comprises a torque convertor and a locking clutch having a torsion damper. The coupling plate which couples the torsion damper to a coupling element of the clutch, arranged to act as a piston, is provided with two sets of circumferential tongues, with the tongues of at least one of these sets each having a slight, wave-shaped, axial deformation.

Abstract: This invention relates to a torsion damping device, in particular for automotive vehicles, comprising two coaxial parts with a hub and a damper plate, and also having an intervention member for modifying the operating characteristics of the torsion damping device. The intervention member is able to occupy two working positions, and comprises at least one weight, moveable radially under the influence of centrifugal force and comprising a trapezoidal tenon which is engaged in a mortice of complementary trapezoidal shape formed in the hub, the weight being biassed against the action of centrifugal force by a resilient spring bearing at one end on the damper plate so as to urge the weight towards the base of the mortice.

Abstract: This invention is concerned with a torsion damping device for an automotive vehicle, of the kind comprising two coaxial parts and an intervention member for modifying the operating characteristics of the damping device. One of the two coaxial parts includes a hub, and the intervention member comprises at least one plate, resiliently deformable in the radial direction and with the hub extending through it. The intervention plate has, at its inner periphery, an inner surface which is adapted to come into engagement on an abutment surface which is fixed with respect to the outer periphery of the hub. The plate is fixed axially in at least two points to one of the said coaxial parts of the torsion damper that is not rotatable with the hub. It is moveable radially between the said abutment surface of the hub and at least one end stop abutment forming part of one of the coaxial parts of the device.

Abstract: The present invention is concerned with torsion damping devices of the kind comprising guide rings, a damper plate, a hub, and friction rings which form part of a first friction device and a second friction device, respectively. An abutment is provided for coupling together in a sub-assembly one of the friction rings and either the appropriate guide ring or the damper plate. In addition, axial retainers are provided between the two friction rings.