Abstract: A hydrokinetic coupling apparatus for a motor vehicle including a crankcase (12), designed to link in rotation, about an axis X, an input shaft to an impeller wheel; a turbine wheel (18) designed to be linked in rotation to an output shaft (16) via hub (14) and a flange (24) transversely oriented extending radially outwards relative to the hub; a lockup clutch (28) coupling the input and output (16) shafts comprising a piston (30) for releasably connecting the turbine wheel (18) to a substantially transverse wall (20) of the crankcase (12) against which the piston (30) is urged to lock the coupling; and at least a friction stop (68) interposed axially between the turbine wheel (18) and the piston (30). A friction stop (68) is arranged radially beyond the outer periphery (100) of the flange (24).

Abstract: A hydrokinetic coupling apparatus for a motor vehicle including a crankcase (12), designed to link in rotation, about an axis X, an input shaft to an impeller wheel; a turbine wheel (18) designed to be linked in rotation to an output shaft (16) via hub (14) and a flange (24) transversely oriented extending radially outwards relative to the hub; a lockup clutch (28) coupling the input and output (16) shafts comprising a piston (30) for releasably connecting the turbine wheel (18) to a substantially transverse wall (20) of the crankcase (12) against which the piston (30) is urged to lock the coupling; and at least a friction stop (68) interposed axially between the turbine wheel (18) and the piston (30). A friction stop (68) is arranged radially beyond the outer periphery (100) of the flange (24).

Abstract: The invention concerns a hydrokinetic coupling apparatus comprising a turbine wheel capable of being interlocked with a driven shaft and housed in an impulse starter wheel with which it can co-operate for hydrokinetic transmission of a torque to said driven shaft, from an input shaft capable of being interlocked with said impulse starter wheel, the turbine wheel and/or the impulse starter wheel being constituted in the form of a wheel (1) including an external doughnut-shaped part (3) fixed on a hub (2) and blades (4) integral with said external doughnut-shaped part (3) and optionally with an internal doughnut-shaped part (8). Said blade wheel (1) is at least partially moulded in one or several parts in synthetic material, in particular a thermoplastic material, a thermosetting material or a synthetic material alloy, said materials being reinforced with resistant fibres.

Abstract: The invention concerns a plate clutch device (5) for locking or unlocking an elastic coupling between said turbine wheel (1) and a radial wall (2a) of said case, via a set of helical shock absorber springs (22) with circumferential action held in place in the arc-shaped housings (24) integral with the turbine wheel (1) and opening in axial direction towards the radial wall (2a). The housings (24) are directly arranged in the thickened peripheral part (25) of the turbine wheel (1) made of mouldable material which for example can be overmoulded on a central metal disc (23) for connection with the driven shaft, the opposite radial ends (26) of the housings (24) acting as supports for the corresponding ends of the springs (22).

Abstract: A blade wheel (10) for a motor vehicle hydrokinetic transmission apparatus having globally a half-torus shape, and comprising axially and successively arranged, a continuous front shell (12) globally shaped like a half-torus with large external diameter, and a continuous rear shell (16), coaxial with the front shell (12), globally shaped like a half-torus with a small external diameter, between which is arranged as assembly of blades (14) whereof the blades (26) extend radially, circumferentially and axially between a concave wall (20) of the front shell (12) and an opposite convex wall (40) of the rear shell (16), the assembly of blades (14), and the front shell (12) are separately made, then assembled to constitute a blade wheel (10), the blade wheel (10) blades (26) being mutually connected at least partly, for example with rings (28, 30), and produced by molding.

Abstract: A torsion damping device having two coaxial parts (12, 3) mounted so as to move angularly with respect to each other counter to elastic member (7), including members (71, 72, 73) acting between radial lugs (55, 65) offset circumferentially and belonging to two phasing washers (5, 6). The phasing washers (5, 6) are mounted in reverse orientations and concentrically, the outer washer surrounding the inner washer. The inner washer (5) is pivotally mounted on a first one (3) of the coaxial parts (3, 12), while the outer washer (6) is pivotally mounted on the first or the second of the coaxial parts (3, 12).

Abstract: The hydrokinetic coupling apparatus includes a housing (12) capable of being rotatably locked on a driving shaft, a turbine wheel (14) capable of being rotatably locked on a driven shaft and a locking clutch (10) acting between the housing (12) and the turbine wheel (14), the said clutch including a piston (2) mounted so as to be axially mobile with respect to the turbine wheel (14), whilst being rotatably locked to the latter, and a counter-piston (3) associated with the housing (12). The piston (12) is interposed axially between the turbine wheel (14) and a mass (3), forming a counter-piston, pivotally mounted on the housing (12). The said mass (3) is coupled elastically to the said housing (12) by means of springs (7) mounted at the outer periphery of the mass (3) between a transverse wall of the housing (12) and a radial projection (31) on the mass (3).

Abstract: Torsion-damping device, particularly in an inertia flywheel forms the reaction plate of a clutch. The damping device comprises two coaxial parts capable of limited rotation relative to each other against the action of springs mounted between pivoted pedestals. Elements of damping material are disposed near engagement zones between the pedestals and each of the coaxial parts.

Abstract: A torsion damping flywheel, particularly for fitting to the clutch of a motor vehicle, has two parts mounted for relative rotational movement about a common axis including an output part comprising two discs forming part of a torque limiter which define externally two guiding flanges housing springs for controlling the relative movement of the two parts. The arrangement simplifies the flywheel by reducing the number of component parts and the axial space requirement.

Abstract: A torsional damper device comprises coaxial first and second parts which rotate relative to each other to a limited degree. The first part comprises two substantially parallel annular flanges and pivoted base members. Two parallel plates on the second part are disposed axially between the two flanges. They have at least one pair of radial arms comprising parallel and substantially circumferential fingers. Springs are disposed substantially circumferentially between the base members. The base members comprise on a surface opposite that in contact with the respective spring rounded recesses in which the fingers engage on relative rotation between the two coaxial parts. A rotational coupling device constrains the plates to rotate together and establishes a circumferential corresponding relationship between the radial arms and their fingers.

Abstract: An improvement to a torsion damping device, especially a double damped flywheel, for eliminating contact between the springs and one of the rotatable parts of the device when the springs tend to deform under the effect of centrifugal force. According to the invention, the springs, which are conventionally mounted between two pivoted thrust members, are each replaced by a damping device comprising two springs with a central insert between them, the insert being so shaped as to make contact with the inner surface of the spacing ring. The invention is applicable to an automobile transmission.

Abstract: A damper-type flywheel comprises coaxial first and second flywheel parts which rotate relative to each other. There are two spaced annular flanges on the first flywheel part and an annular flange assembly on the second flywheel part which lies between the annular flanges on the first part. Circumferentially acting spring members and a friction device are operative between the first and second flywheel parts. The friction device comprises an annular flange constrained to rotate with the flange assembly, at least one friction ring disposed axially between the annular collar and the flange assembly, and lost-motion circumferential engaging portions operative between the friction ring or rings and one of the annular flanges on the first flywheel part.

Abstract: A damper-type flywheel comprises a first part on which are two spaced annular flanges and a second part coaxial with the first part, the first and second parts being rotatable relative to each other. There is a flange assembly comprising at least one annular flange on the second part disposed between the annular flanges on the first part. A friction device is operative between the first and second parts for relatively small amounts of relative displacement between them. At least two circumferentially acting spring members are operative between the first and second parts in conjunction with this friction device for relatively large amounts of relative displacement between them. Openings in the annular flanges of the first part accommodate these spring members. Arms on the flange assembly of the second part cooperate with the spring members.

Abstract: A torsional damper device comprises an intermediate member responsive to centrifugal force. At low values of torque, beyond a predetermined critical rotation speed, it causes to become operative an elastic intermediate member which is normally inoperative at such low values of torque. This intermediate member comprises at least one flange which, by way of a toothed portion, is selectively interlocked with the hub. By way of a bearing lug, it is adapted to act on the elastic member concerned.