Abstract: An assembly comprising a shaft (14) and a female part (6) fixed in terms of rotation on the shaft by rotational-fixing means which cooperate through complementary shapes (16), the female part also being fixed axially on the shaft, and the female part (6; 160; 360) comprising axial first stops (52; 54; 152) which cooperate with associated second stops (44; 46; 144) belonging to the shaft. The first and second stops (44; 46; 52; 54; 144; 152) act in the direction of mounting. The female part (6) further comprises first axial-retention surfaces (60; 160; 360) cooperating with associated second axial-retention surfaces (50; 150; 350) belonging to the shaft. The first and second retention surfaces (50; 60; 150; 160; 350; 360) act in the opposite direction to mounting. The invention applies in particular to ball-type constant-velocity joints for motor vehicles.

Abstract: An assembly comprising a shaft (14) and a female part (6) fixed in terms of rotation on the shaft by rotational-fixing means which cooperate through complementary shapes (16), the female part also being fixed axially on the shaft, and the female part (6; 160; 360) comprising axial first stops (52; 54; 152) which cooperate with associated second stops (44; 46; 144) belonging to the shaft. The first and second stops (44; 46; 52; 54; 144; 152) act in the direction of mounting. The female part (6) further comprises first axial-retention surfaces (60; 160; 360) cooperating with associated second axial-retention surfaces (50; 150; 350) belonging to the shaft. The first and second retention surfaces (50; 60; 150; 160; 350; 360) act in the opposite direction to mounting. The invention applies in particular to ball-type constant-velocity joints for motor vehicles.

Abstract: This spider for a universal joint includes a central body (2) intended to be connected to a shaft and from which several arms (3) project, a roller (5) mounted so that it can roll and slide on each arm (3) by means of a ring of needles (4), and a member (8) for retaining each roller (5) on its arm (3). The arm (3) includes a hollowed peripheral raceway (12) in which the needles (4) run. The retaining member includes a collar (8) mounted at the end of the arm and spaced away from the needles (4), which collar has, on the outside, over at least most of its periphery, a rim (18) for positive retention of the roller.

Abstract: There is provided a device for the mechanical transmission of forces between a first input element and a second output element, characterised in that it comprises an input member (12) connected to the first element, an output member (14) connected to the second element and a force transmission block (16) which is interposed between these two block members (12, 14) and is capable of experiencing elastic deformation under the action of the compressive forces exerted on it by the two members when these are displaced relative to one another in the main force transmission direction (X--X), and in that it comprises a controlled means (24) for varying the rigidity of the force transmission block (16) in the main direction (X--X) by exerting a control force (FC) on it.

Abstract: A transmission joint has a body connected to a first shaft which delimits a cavity. Inside the cavity is formed at least one pair of running tracks, in which is received a running element connected to a second shaft. The joint has an element for axially retaining the body relative to the second shaft, which element comprises an elastically deformable element which has the shape of a body of revolution, a high axial rigidity and two coaxial, cylindrical joining surfaces, an inner surface and an outer surface, which are connected to the second shaft and the body, respectively.

Abstract: A transmission joint has a first element connected to a first shaft and mounted in an articulated manner in a second element to form a housing fastened to a transmission member. The housing includes a radial fastening flange mounted axially slidably relative to the outer casing of the housing and an apparatus for immobilizing the fastening flange axially relative to the outer casing of the housing when the second element is in the fixed position on the transmission member. The process employed to assemble the transmission joint temporarily secures the housing relative to the first member until the housing is secured to the fastening flange.

Abstract: A transmission joint of the type comprising a socket is connected to a first shaft. Inside the socket is formed at least one pair of rolling tracks in which a rolling element connected to a second shaft is received. A protective closing cover of a generally cylindrical form is mounted on the outer wall of the socket, with a gasket interposed in the vicinity of an end of the socket adjacent the first shaft. The other end of the cover keeps a free annular edge of a sealing bellows gripped between an inner cylindrical wall of the cover and an opposite socket portion. The cover is mounted on the socket in the vicinity of its two opposite ends so as to provide a radial play between the inner wall of the cover and a rough outer wall of the socket.

Abstract: A support bearing of a rotary shaft, of the type comprising an inner ring (12) and an outer ring (10) coaxial with one another and elastic connecting strips (14a, 14b) between the two rings.The connecting strips comprise a series of first elastic strips (14a) which connect a first edge (10a) of the outer ring (10) to an axially opposite first edge (12a) of the inner ring (12), in such a way that the mid-plane of each of the first strips (14a) forms a first angle (A) with the axis (X--X) common to the two rings, and a series of second elastic strips (14b) which connect the second edge (10b) of the outer ring (10) to the second edge (12b) of the inner ring (12), in such a way that the mid-plane of each of the second strips forms a second angle (B) with the common axis (X--X).The invention is used particularly for supporting a motor-vehicle transmission shaft.