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 clutch mechanism comprising a wear take-up mechanism cassette whereof the U-shaped support (62) is characterized in that at least one of the support (62) side wings (65, 65′) carries a bearing (3, 3′) centrally bored (361, 361′) receiving one end (69, 69′) of the shaft (67, 67′) of the adjusting rotating element (60, 63) and which is located in a blind hole (61, 61′) in the wing wherein it is threaded and then locked, particularly by crimping (462, 462′).

Abstract: The friction clutch comprises a reaction plate designed to be blocked on a driving shaft, a friction disk, bearing at its external periphery friction linings, a pressure plate, a cover (52) fixed on the reaction plate, an axially operating clutching device (53) controlled by a disengaging device and which operate between the cover (52) and the pressure plate through a support device, the pressure plate being integral in rotation with the cover (52) and being subjected to the action of an elastic return device (9) axially returning the pressure plate towards the cover (52). The clutch also comprises a wear take-up device comprising a toothed gear (59) with which a worm screw (63) co-operates and a device (90) for resetting in the position corresponding to linings in new condition, the device (90) being placed at the worm screw (63) tip to drive the latter in rotation.

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: The invention concerns a clutch mechanism comprising a cover (52) including a housing (218) receiving support (62) shaped like an upside down U of the adjustment cassette containing an upper web (64) fixed to a peripheral edge (152) of the cover (52) by riveted plate bracket (68). The invention is characterised in that the support comprises a stabilising bracket (171) vertically supported against an upper edge (158) pertaining to an aperture formed in a vertical transverse wall of the housing (218).

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: The friction clutch comprises a friction disc, a pressure plate (1), a cover plate (2), a diaphragm (3) working between, firstly, the cover plate (2) and secondly the pressure plate (1), the said clutch also including a wear compensating device comprising ramps (11) disposed circumferentially and adapted so as to be driven in rotation by means of a set of teeth (18) which they carry at their periphery and with which a tangentially disposed worm (13) cooperates, a ratchet wheel (20) for driving the worm (13) in rotation being provided and rendered operational by wear in the friction liners when the clutch is engaged, together with non-return catches (36) for preventing the worm (13) from turning in the direction opposite to that in which it is driven in rotation by the ratchet wheel when it is operational, the worm (13), the non-return catches (36) and the ratchet wheel (20) being carried by a support (12) fixed to the cover plate (2): the ratchet wheel (20) of the worm (13) is controlled by the diaphragm (3).

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) and the cover (8) base (80), resilient clutch means with axial action (4, 6) axially stressing the clutch thrust plate in a direction opposite to the cover (8) base (80) and a declutching device (7) to counter at will the action of the 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), the mechanism being equipped with a wear take-up device (90) for at least the clutch friction linings (2) actuated by the resilient clutch means (4, 6); the wear take-up device (90) comprises ramp means (111) arranged at its circumference and support zones (114), one (4) of the Belleville washers (4, 6) being in contact with the support zones (114), while the other (6) re

Abstract: The friction clutch comprises a friction disc, a pressure plate (1), a cover plate (2), and an axially acting spring (3) working between the cover plate (2) and the pressure plate (1), the pressure plate (1) being fixed in rotation to the cover plate (2) while being able to be displaced axially with respect thereto, the said clutch also including a wear compensating device comprising ramps disposed circumferentially and located and adapted so as to be driven in rotation by means of a set of teeth (18) which they carry at their periphery and with which a worm (13) cooperates, a ratchet wheel (20), fixed in rotation to the worm (13), being provided, together with a non-return catch (36) for preventing the worm (13) turning in the direction opposite to that in which it is driven in rotation by the ratchet wheel (20): the non-return catch (36) is part of a resilient member (31) which also carries a control tongue (35) for actuating the ratchet wheel (20) in rotation.

Abstract: The friction clutch, for a vehicle, comprises a friction disc, a pressure plate (1), a cover plate (2), and an axially acting diaphragm (3) working between the cover plate (2) and the pressure plate (1), the pressure plate (1) being fixed to the cover plate (2) for rotation with it, while being displaceable axially with respect thereto and being subjected to the action of biassing tongues (9) for returning the pressure plate (1) axially towards the cover plate (2), the said clutch further comprising a wear compensating device which includes circumferentially disposed ramps (11) adapted to be driven in rotation by a set of teeth (18), which they carry at their periphery and with which a worm (13) cooperates, a ratchet wheel (20) being provided for driving the worm (13) in rotation: the ramps (11) have ventilating apertures (16A).

Abstract: A device for taking up clearance designed to equip a diaphragm friction clutch, having circumferentially distributed ramps designed to cooperate with the thrust plate of the clutch, support areas designed to receive the axial force of the diaphragm of the clutch and a toothing designed to drive them in rotation: the device consists of a ring having on one of its faces ramps alternating circumferentially with support areas constituting the support area.

Abstract: A torsion damper, especially for a motor vehicle friction clutch, includes a friction unit, or unitary friction assembly, that comprises a guide ring, at least one drive ring, and axially acting resilient members in biassing relationship on the drive ring. The drive ring and these resilient members are mounted in a cavity which is bounded by the guide ring and by a closure ring which is secured to the guide ring. The closure ring is formed at its inner periphery with at least two axial stop lugs for preventing rotation. The stop lug penetrates into an associated aperture which is formed in the guide ring.

Abstract: The friction clutch includes a device for taking up clearance comprising a ramp device disposed circumferentially and adapted to be rotated by a toothing which they carry at their periphery and with which cooperates a worm disposed tangentially: the worm is mounted so as to slide along its axis while being subject to the action of a so-called taking-up elastic spring and it is when it is moved along its axis that it rotates ramps; the load of the taking-up spring increasing with the wear on the linings the axial movement is obtained when the load is sufficiently high to overcome the axial force due to the return device to which the ramps are subject, with the clutch released; driving of the worm in rotation is provided and made operational by the wear on the friction linings when the clutch is engaged; non-return devices prevent the worm from turning in the direction opposite that in which it is driven by the driving devices.

Abstract: The friction clutch comprises a pressure plate (120) consisting of two half plates (120A, 120B), which are displaceable axially with respect to each other under the action of a device (111) for taking up clearance due to wear, in which this device includes at least one pair of complementary ramps (190, 191), an arming piece (101) which is mounted for rotation, with respect to a ramp (190) called an adjusting ramp, between two positions, one of which corresponds to a state of wear in the friction liners (130), with a resilient arming device biassing the arming piece (101) towards the said position, a first locking device (112), adapted to immobilise the arming piece (101) against rotation with respect to the pressure plate (120), being able to be made inoperative under the action of a second locking device (212) which is adapted to immobilise the said adjusting ramp (190) against rotation with respect to tie pressure plate (120), and being able to be made inoperative under the action of the trigger member (103

Abstract: A liner support disc for supporting friction liners, adapted to constitute a clutch friction wheel, especially for a motor vehicle, of the kind comprising a central portion and a peripheral portion divided into radial blades for receiving the friction liners, with each of the blades being joined integrally to the central portion through a foot, and comprising at least one support zone which is generally parallel to the mean plane of the central portion, for contact with at least one of the friction liners and for fastening of the latter. In a clutch friction wheel, the liners lie on either side of the peripheral portion.

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 damper-type flywheel comprises two coaxial parts adapted to rotate relative to each other about their common axis. A circumferentially acting spring device is operatively disposed between the two coaxial parts. An annular fluid-tight cavity is defined between the two coaxial parts. A viscous damper device accommodated in the fluid-tight cavity is mechanically disposed between the two coaxial parts. The viscous damper device may comprise two groups of fins in the annular cavity each constrained to rotate with a respective one of the two coaxial parts, the annular cavity containing a viscous, preferably non-Newtonian fluid such as a silicone-based fluid.