Abstract: The joint is of the type in which each arm (3) of the tripod (1) has a spherical bearing surface (4) that cooperates with a cylindrical bore (8) in a one-piece intermediate shoe (7). A series of rolling members (12) is disposed between each side of the shoe and a rolling track (6) of the female member (5) of the joint. The bearing distance (D) between the center (A) of the spherical bearing surface (4) of each arm (3) and the main axis (X—X) of the male member (1) is significantly different from the rolling distance (d) between the main axis (X—X) and the mean plane (P′) of the rolling members (12) associated with the same arm.

Abstract: The invention relates to transmission devices comprising at least one joint and/or at least one sliding connection and more particularly concerns taking up clearances and providing a dynamic balancing of such devices. The invention comprises mainly intentionally sufficiently unbalancing an inner or "floating" part of the device to exceed the random imbalance resulting from radial clearances existing in the joints (20) or sliding connections. The subsequent balancing of the whole of the transmission device is in this way rendered really effective.

Abstract: There is provided a device which incorporates a viscous-fluid coupling (68) and a friction clutch (74) in which are integrated actuation means (80, 81) which cause the engagement or the release of the clutch as a function of the speed of rotation of one of the members which are connected by the device.

Abstract: The invention relates to a transmission device between two coaxial rotating members (1; 10), of the type comprising a viscous-fluid coupling (11) with a driving element and a driven element, and control devices for modifying the operating characteristic of this coupling. It is defined, in particular, in that the control devices are incorporated into the transmission device and act as a function of the rotational speed of one the said members and as a function of a torque transmitted by the device. The control devices can comprise flyweights (21) which are rotationally integral with the member (1) and with the case (12) of the viscous-fluid coupling, these flyweights acting to modify the internal pressure in the coupling (11), via shuttles (27) and a sliding sleeve (8) which is displaced as a function of the torque transmitted between the sun gear (2) and the output shaft (10). This sliding sleeve can, for example, act on a plate (16) which modifies the spacing between the disks (14, 15) of the coupling.

Abstract: The invention provides a rotary shock absorber (10) of the type comprising a sealed hollow cylindrical housing (12) in which are arranged discs (50A, 50B) alternately integral in terms of rotation with the housing (12) or with a coaxial central shaft (22) mounted rotatably in the housing (12), the inner chamber (20) delimited by the housing (12) being filled at least partially with a viscous fluid received between the mutually confronting faces of the discs, characterized in that it comprises a displacement member (58) for varying the law of damping of the shock absorber as a function of the relative angular displacement of the central shaft (22) in relation to the housing (12).

Abstract: According to the invention, an output element of a differential is made in two parts (14a, 14b), one (14b) of these two parts being axially mobile under the effect of a torque transmitted through this output element. This axial displacement is used to act either on a friction clutch or preferably on a coupling of the viscocoupler type in order to modify its characteristics.Application particularly to motor vehicles.

Abstract: This device, comprising a housing (10), an input member and two output members (14, 15) as well as a controlled-slip coupling device (23) arranged between two of the said input and output members, is characterized in that the differential comprises at least one member (14) axially movable under the effect of a torque exerted on it, the displacement of this member being utilized to modify the operating characteristics of the controlled-slip coupling.This provides a differential with a slip self-controlled as a function of the torque and of the speed difference between the output members, the law of variation of which is appreciably improved in relation to that of the known devices.

Abstract: An axially retained homokinetic joint comprises an element in the form of a tripod (20) connected to one (22) of two shafts to be coupled and a tulip element (42) connected to the other (34, 134) of the two shafts, the tripod element comprising three trunnions (26a) on which are rotatively and slidably mounted rollers (36a) received in three rolling tracks (40) formed in the tulip element, and are an axial retainer (44) for maintaining the two parts of the joint in position relative to each other. The axial retainer comprises an intermediate member (44) connected to the tulip element (42) and cooperating with the tripod element (20) by means of a connection enabling the latter to move in a plane at right angle to its axis (X--X). The rolling tracks (40) consist of tracks of substantially toroidal shape in which run rollers whose outer surface is spherical.

Abstract: The hub assembly comprises a wheel flange, a transmission joint and a rolling bearing. The confronting radial surfaces of the flange and the inner race of the bearing are separated throughout their height by a gap and consequently do not bear against each other. The connection between these two elements is achieved by means of a circumferential weld. By means of such an arrangement, there is avoided a harmful heating of the rolling bearing and of the joint by transmission of heat from the wheel flange.

Abstract: This wheel hub assembly is intended for the driving set of wheels of a vehicle which may be steering wheels or otherwise. It comprises mainly a wheel flange, a transmission joint and a rolling bearing. The axial bearing surface between the flange and the inner race of the rolling bearing is limited to an annular ring of small radial dimension but of relatively large diameter. The section of the passage of the flow of heat between the flange and the race is thus substantially reduced.