Abstract: The joint comprises a tripod connected to one of the two shafts to be coupled by the joint and defining three trunnions on which three part-spherical rollers are mounted. A second member of the joint is connected to the other shaft and defines three raceways in which the rollers are received. The tripod constitutes a member which is distinct from the shaft associated with the tripod and is connected to this associated shaft by an auxiliary homokinetic coupling. The latter is capable of operating at an angle of displacement which is small relative to the maximum angle of displacement of the two shafts coupled by the joint.

Abstract: The joint comprises a first member defining a tripod connected to a first shaft and forming three trunnions. Part-spherical rollers are respectively slidably and rotatably mounted on the trunnions. A second member connected to a second shaft defines three raceways in which the rollers are received. The raceways are each formed by a pair of part-circular sectioned grooves the mean line of which is an arc of a circle centered preferably in the vicinity of the axis of the second shaft. The tripod is rigid with a shaft section which has, in a zone close to the tripod, a substantially triangular cross-sectional shape approximately constituting the envelope of the free edge of the second member when the joint operates with an angular displacement of the first and second shafts close to the maximum possible angle.

Abstract: At least one of the splined members of the splined coupling has its splines modified so that they have maximum thickness in an intermediate part of the splines and progressively decrease to the ends of the splines. The resulting profile is such that, upon application of a given torque, the pressure produced in the zones of contact between the interengaged splines is substantially constant throughout the interengaged length of the splines.

Abstract: Apparatus is described for cold forming cylindrical metal blanks into parts having a central body and radial extensions, such as universal joint spiders and constant velocity universal joint tripod members. Die sectors of shortened axial height in their radial forming and extrusion zone are mounted for quick fastening and release, for example by dovetail connections to die carriers which are in turn mounted on rams displaceable along inclined converging slideways. Guide bushes are provided at the entrance to the through cavity corresponding to the central body and guide a cylindrical blank along the axes of coaxial punches fixed respectively to the plunger and column on the table for restraining plastic flow of blank metal towards the central cavity and then to the radial cavities.

Abstract: The stop member has a shape of revolution and an L-shaped cross section. The re-entrant angle defined by the two branches of the L faces the axis of the member. A skirt portion of the member which corresponds to the branch of the L which is parallel to the axis of the member has corrugations. A flange of the member which is perpendicular to the axis of the member corresponds to the other branch of the L.The stop member can be combined with an annular groove of a shaft to axially retain the shaft. The diameter of the opening defined by the flange of the member is slightly larger than the diameter of the shaft and the minimum diameter defined by the corrugated skirt portion is less than the diameter of the shaft.A method and device for producing the stop member are also described.

Abstract: The invention substantially increases the maximum break angle of the joint without increasing its overall size. This is achieved in taking advantage of the planetary movement of the shaft carrying the tripod and the rollers and providing in the free inner edge of the bell recesses the minimum depth of which recesses is calculated in accordance with the amplitude of the aforementioned planetary movement.

Abstract: A setup for use in a press for cold-forming metal parts, such as tripods of universal joints having a central body and radially projecting portions, from a cylindrical billet. A first setup is provided for forming an intermediate workpiece which may then be finished in a second setup. In the first setup the die sectors which make up the die are mounted on rams which are slidably mounted on slotted members between a spaced apart position when the press piston is in its raised position and a clamped together position by means of a toggle mechanism. Punches are provided on the table and the piston which compress the starting billet thereby extruding the metal into channels in each of the die sectors. In the second setup upper and lower die halves are carried respectively by the piston and the table of the press. The die halves have channels adapted to receive the various portions of an intermediate workpiece.

Abstract: This tripod homokinetic coupling, intended in particular to be employed in front-wheel drive automobile vehicles, is improved in order to achieve an axial retention which is a function of the torque transmitted and thereby avoid percussions which are produced in conventional arrangements or an excessive wear.For this purpose, the axes of the raceways for the rollers on the trunnions are inclined with respect to the axis of the associated shaft so that there results on the rollers an axial force whose orientation and magnitude depend on the sign and the magnitude of the torque transmitted.

Abstract: The joint allows high operational speeds and large operating angles while remaining homokinetic.The joint comprises a bell integral with the driving shaft and defining raceways for rollers carried by trunnions. Two sets of rollers and trunnions are provided and associated respectively with two concentric shaft sections which are connected to the driven shaft and are capable of undergoing elastic torsional deformation so as to take up the phase difference between the two sets of rollers and trunnions.

Abstract: Universal joints for constant velocity transmission of rotational motion between two shafts able to run at an angle comprising two main parts each mounted on one of the shafts and power transmitting members formed as rollers or balls operatively therebetween. These members have two guiding paths formed by pairs of grooves, one on each of the main parts, in the case of balls, and spindles on one of the main parts and spherical surfaces on the other of the main part, when the members are rollers. The guiding paths on a main part make an angle .alpha. with the axis of the shaft on which the part is mounted. Guiding paths of one of the main parts cut guiding paths on the other main part at an angle 2.alpha..

Abstract: An oscillating bearing support for supporting an intermediate shaft of a power transmission with universal joints particularly in motor vehicles. An inner sleeve supports the shaft for rotation therein. An outer support sleeve is fixed to a fixed support. The facing surfaces of the inner and outer sleeves are provided with adjacent circular grooves generally concentric with the axis of the shaft in its rest position. An elastomeric toroidal member is provided wth ribs cooperable with the grooves of the sleeves and concentric with its center line. The toroidal member is fitted on the inner sleeve and compressed between the inner and outer sleeves. Radially projecting portions at the ends of one of the sleeves cooperate with plain cylindrical portions at the ends of the other sleeve for axially retaining the inner sleeve relative to the outer sleeve. The toroidal member may be formed in segments. The grooves in the inner and outer sleeves may be screw threads.

Abstract: A constant velocity universal joint for transmitting motion between two shafts which are intended to be run at an angle. An even number of spindles preferably equal to, or greater than, four are mounted on a hub member fixed to one of the shafts. Rollers with part-spherical outer rolling surfaces are slidably and rotatably mounted on the spindles and cooperate with corresponding opposed pairs of grooves formed in a cup member fixed to the other shaft. The angle formed between the longitudinal axis of one of the spindles with the axis of its respective shaft being equal to the angle formed between the longitudinal axis of its corresponding pair of opposed grooves and the axis of the latter's respective shaft. This angle between 15.degree. and 45.degree. may differ from one spindle and its pair of opposed grooves to another such unit.