Abstract: A control system for a vehicle having first and second wheels is provided that includes a differential apparatus adapted to distribute torque between the first and second wheels and a traction controller for controlling operation of the differential apparatus from vehicle launch up to a predetermined vehicle speed. The traction controller is configured to engage the differential apparatus in a first operating state according to at least one vehicle operating parameter indicative of a low traction operating condition and to further control engagement of the differential apparatus in a second vehicle operating state during the low traction operating condition according to a difference between an actual vehicle yaw rate and a predetermined target vehicle yaw rate. The control system also includes a stability controller for controlling engagement of the differential apparatus at or above the predetermined vehicle speed.

Abstract: A boot for a joint, wherein an equal-diameter part and thick-walled parts are formed on the inner peripheral wall of a large diameter tube part. A first tapered part extending from the equal-diameter part is continued with a second tapered part formed at the thick-walled parts in the circumferential direction. The diameter reducing ends of the first tapered part and the second tapered part are located at the same position, and a thin-walled part engaged with an annular groove formed in the outer member of a constant-velocity joint is continued with the diameter reducing end.

Abstract: Each boot of a tripot type constant velocity joint comprises a polyester-based thermoplastic elastomer (TPC). A grease encapsulated in the boot comprises a base oil, a thickening agent comprising a diurea-based compound, molybdenum dialkyldithiocarbamate sulfide, a sulfur-phorsphorous based extreme-pressure agent being a sulfur-phosphorus based compound containing sulfur and phosphorous as constituting elements, and potassium borate hydrate.

Abstract: A structure for a tripod constant velocity joint and a method of assembling a roller assembly maintains the structural stability of the tripod constant velocity joint, and minimizes the frictional force between a trunnion and a track, thus remarkably reducing the generation of axial force, therefore ensuring the stable operation and durability of the constant velocity joint. The structure for the tripod constant velocity joint includes an inner roller and an outer roller provided between a track of a housing and a trunnion of a spider. A roller groove is formed on a central portion of an outer surface of the outer roller in a circumferential direction of the outer roller. Further, a plurality of recesses is formed on a surface of the trunnion to reduce a contact area with the inner roller.

Abstract: A constant velocity joint (1) comprising: a male element (2) with multiple arms (4), a female element (8) having a central axis (X?-X?) and defining tracks (9A, 9B) which are symmetrical in relation to a radial longitudinal plane (P), and an outer roller (12) with a rolling surface (30). The tracks and the rolling surface define two contact points (Z1, Z2) therebetween. The tangent planes of the track and rolling surface coincide and are parallel to the plane (P) at not less than one contact point. The cross profiles of the tracks and rolling surface at not less than one contact point are rectilinear or convex.

Abstract: When an inner ring portion of a tripod is brought into contact with a protruding portion, the inner ring portion is brought into contact with the protruding portion because an outer diameter of the protruding portion is smaller than a diameter of a tilted outer end portion of the inner ring portion. Since the inner ring portion is tilted with respect to an axial direction, the inner ring portion is brought into contact with the protruding portion by a point (a line) not by a surface. If the inner ring portion is brought into contact with the protruding portion by the point, a stress concentration is generated at the point with which the protruding portion is brought into contact, a small impact force overcomes a breaking load of the protruding portion in the stress concentration portion, and the stress concentration portion is easily broken (plastically deformed).

Abstract: A constant velocity joint, wherein all of those rolling elements excluding a plurality of rolling elements are divided into a plurality of rolling element groups and arranged along the inner diameter part of a roller member. The excluded plurality of rolling elements are dispersed in first to third cam grooves at intervals in the circumferential direction. When the rolling elements are pressed in the radial outer direction by the first to third pressing faces of a cam rotating in the arrow A direction, they are simultaneously press-fitted into first to third clearances between the rolling elements from the side of the inner diameter part of the roller member.

Abstract: A tripod constant velocity universal joint includes among others an inner joint member having a boss 22 and journals 24 radially protruding from the boss, a radius of curvature R1 as viewed in a cross section of a journal bottom part 23 connecting the boss 22 to the journal 24 and as measured at opposing locations in a circumferential direction of the joint is larger than a radius of curvature R2 of the journal bottom part as viewed in its cross section and as measured at opposing locations in an axial direction of the joint and R1 gradually decreases down to R2.

Abstract: In a tripod type constant velocity joint, in order to produce a recovery couple to correct the inclination of the rolling direction of a roller and to reduce surface pressure without using angular contact provided by a Gothic arch-shaped roller guide surface, it is arranged that where r1 and r2 are the minimum and maximum values, respectively, of the radius of curvature of the generatrix for the outer peripheral surface of the roller within the range where solid contact is effected by elastic deformation of the contact section between the roller and the roller guide surface under a predetermined torque load with respect to the radius of curvature of the roller guide surface, the radius of curvature (r) of the generatrix be set in the range r1?r?r2.

Abstract: A constant velocity joint, where the tilt angle of a first trunnion relative to a plane crossing perpendicularly to the axis of a second shaft is set to be different from the tilt angle of a second trunnion and the tilt angle of a third trunnion. The tilt angle of the second trunnion and the tilt angle of the third trunnion are set to be equal to or different from each other, and three axes of the first to third trunnions are set to be included on a same plane.

Abstract: A tripod type constant velocity joint including a hollow cylindrical housing fixed to the end of a first rotary shaft and formed with axially extending recessed grooves opened at one axial end and located at circumferentially trisectional positions on the inner peripheral surface, a tripod consisting of a boss fixed to the end of a second rotary shaft, and end-spherical trunnion journals radially projecting from circumferentially trisectional positions on the boss, and roller assemblies each consisting of an inner roller swingably fitted at the inner peripheral surface thereof on the spherical outer peripheral surface of the trunnion journal, and an outer roller supported for rotation and axial movement on the outer peripheral surface of the inner roller through needle rollers, wherein the outer rollers are received in the recessed grooves in the housing and are rollable axially of the housing.

Abstract: A tripod type constant velocity universal joint that includes an outer joint member having three track grooves axially extending on an inner circumferential surface thereof; an inner joint member having three radially projecting trunnions; a boot fitted to an outer periphery of the outer joint member at an end portion and to a shaft extended from the inner joint member at another end portion to seal an inner region of the joint; wherein the outer joint member includes a first reduced-thickness portion on an outer periphery thereof in a region corresponding to the region between the track grooves, and a second reduced-thickness portion on an outer periphery thereof in a region corresponding to the region where the track grooves are located; and wherein the second reduced-thickness portion is of a groove shape axially extending with respect to the outer joint member.

Abstract: A compact tripod type constant velocity joint with double roller type roller units capable of preventing plastic deformation of snap rings in assembling. In each of the roller units, an outer roller has an inner diameter ‘Do’ of 26.4 mm or less. The inner diameter ‘Do’ (mm) of the outer roller, a groove depth ‘Depth’ (mm) of engaging grooves formed on the outer roller and an outer diameter ‘Ds’ (mm) of the snap rings satisfy the formula below. Then, in a state where the snap rings are seated in the engaging grooves, diametrical gaps of 0.1 mm or more are formed between outer peripheral ends of the snap rings and groove bottoms of the engaging groove. Do+2×Depth?Ds?0.1.

Abstract: A shaft assembly comprises a tubular shaft and a joint, wherein at least a portion of the joint is disposed within the tubular shaft. The present invention may also include a shaft assembly comprising a shaft and a constant velocity joint wherein the constant velocity joint is integrated into the shaft by inserting at least a portion of the constant velocity joint into the shaft. In one method of the invention, the method comprises the steps of integrating a constant velocity joint into a propeller shaft by inserting at least a portion of the constant velocity joint into the propeller shaft.

Abstract: In a tripod-type constant velocity joint having an inner joint member, an outer joint member, and three roller units, the radius R1, outer width W1, and inner width W2 of the outer periphery cylindrical surface of each roller unit, and the radius R3 of the center hole of each roller unit satisfy the inequalities: 0.5Rtc(1/cos 0.3??1)+(R1?R3)?<W1 and 1.5Rtc(1?cos 0.3?)+(R1?R3)?<W2, where Rtc: the radius of a circle passing through the respective centers of tripod spherical surfaces of the inner joint member, ?: the maximum joint angle between the outer joint member and the inner joint member, and ?: coefficient of friction between each tripod spherical surface and the wall surface of the center hole of the corresponding roller unit.

Abstract: A constant velocity joint comprises an outer race, inner race and torque transmitting elements. The outer race has a cylindrical hollow part with an opening at one end and plural walls on an inner surface of the cylindrical hollow part. At the opening of the cylindrical hollow part, the walls have projections formed by a pin-drive. The inner race is assembled with the torque transmitting elements and press-fitted into the cylindrical hollow part of the outer race.

Abstract: A resin boots for constant velocity universal joint, including: a resin bellows including an approximately conical bellows-shaped portion with its inner hollow part, a small diameter end portion communicated with an inner space of the bellows-shaped portion and arranged at one end, and a large diameter side end portion communicated with the inner space of the bellows-shaped portion and arranged at the other end; a large thickness portion formed in an inner surface of a large diameter side end portion of the resin bellows in accordance with an injection molding, protruded in the vertical direction to the center of the large diameter side end portion and arranged in the circumferential direction at regular intervals; and a small thickness portion arranged between the large thickness portions and formed thinner in the diametrical direction compared with large thickness portion.

Abstract: This homokinetic joint includes a roller assembly (9) having an inner ring (10) with a ring end surface (16) which is directed in a direction (S1), an outer roller (11) having a roller end surface (32) which is directed in the direction (S1), a needle ring (12), and a mechanism (13) for axially retaining the needle ring (12) on the inner ring (10). The ring end surface (16) is axially offset relative to the roller end surface (32) in the direction (S1).

Abstract: The present invention provides a lightweight, compact, and low-cost tripod type constant velocity universal joint while maintaining strength of overall tripod type constant velocity universal joint. The dimensional ratio of each component of the tripod type constant velocity universal joint is set as follows: 0.80<Dor<0.90, 0.105<Tor<0.115, 0.025<fir<0.045, 0.025<t2r<0.075, 0.53<Dir<0.63, 0.065<Tir<0.085, 0.32<Dj1r<0.42, and 0.32<Dj2r<0.35. In this event, the subscript “r” means that each dimension is divided by the trunnion journal pitch circle diameter D (=PCD) of the joint.

Abstract: A constant velocity universal unit includes an outer joint member whose inner peripheral face is formed with three guide grooves, an inner joint member including three tripod shafts each formed with a tripod spherical face, three roller units each including an outer peripheral face and an inner peripheral face coaxially formed with each other. The guide groove includes a pair of strip-shaped inner side faces formed with a pair of guide projections having a substantially half arc shape in cross section whose diameter is smaller than a height of the inner side face of the guide groove. The constant velocity universal joint further includes an annular recess formed on a substantially center portion in a height direction of the outer peripheral face of the roller unit and engaging with the pair of guide projections in a rolling manner and rotatable relative to a central axis of the guide projection.

Abstract: The universal joint includes an outer joint member having a rotational axis and three guide grooves extending parallel to its rotational axis. The three guide grooves are equally circumferentially spaced about the axis and each has opposed side portions. The universal joint also includes an inner joint member disposed inside the outer member. The inner joint member has a rotational axis and three arms equally spaced about this rotational axis extending radially into the guide grooves of the outer joint member. Each aim carries a roller having an external surface which engages the opposed side portions of the guide groove into which the arm extends. The roller is constrained to roll along the guide groove and each roller being able to rotate about, move lengthwise of, and tilt relative to the arm by which it is carried.

Abstract: Shifting prevention and sealing property between a boot for a constant velocity universal joint, having a thick portion on the inner peripheral surface of a large-diameter-side end portion and the outer peripheral surface of a tripod joint casing are enhanced, costs for preparing the casing are reduced, and the preparation is facilitated. One or a plurality of seal lips are disposed in the form of protrusions over the whole periphery in a peripheral direction of the inner peripheral surface of the large-diameter-side end portion of the boot for the tripod joint, into which the casing of the tripod joint is inserted, shift preventive walls are disposed on opposite sides of an axial direction via the seal lip, and inner diameters of the shift preventive walls are formed to be smaller than those of base portions of the seal lips. The shift preventive walls and the seal lips are disposed right under a band fastening portion.

Abstract: A tripod constant-velocity universal joint has three guide grooves extending axially along an outer cup, trunnions projecting from a spider inserted into the outer cup, and rollers rotatably mounted on the trunnions through rolling elements. The rollers rotate and slide against guide surfaces of the guide grooves. The rolling elements have flat end faces and are assembled into the rollers by a keystone process. The rollers have flanges for preventing dislodgement of the rolling elements from the rollers. If a distance X by which a rolling element moves radially is maximum, the ratio (W/Dn) of the width W of contact between inner side surfaces of the flanges to the diameter Dn of the rolling element is in a range of from 0% to 30%, and the height h of the flanges also is set to satisfy the ratio value (W/Dn).

Abstract: A tripod type constant velocity joint comprising a hollow cylindrical housing fixed to the end of a first rotary shaft and formed at the inner peripheral surface thereof with axially extending recessed grooves opened at one axial end and located at circumferentially trisectional positions on the inner peripheral surface, a tripod consisting of a boss fixed to the end of a second rotary shaft, and end-spherical trunnion journals radially projecting from circumferentially trisectional positions on the boss, a roller assemblies each consisting of an inner roller swingably fitted at the inner peripheral surface thereof on the spherical outer peripheral surface of the trunnion journal, and an outer roller supported for rotation and axial movement on the outer peripheral surface of the inner roller through needle rollers, wherein the outer rollers are received in the recessed grooves in the housing and are rollable axially of the housing, each recessed groove consists of guide surfaces contacting the outer peripher

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: Positioning projections for engaging recesses in an outer peripheral surface of a mating member project from an inner peripheral surface of a grommet, and the position of a minimum inside diameter portion of each positioning projection after being fitted to the mating member is offset from interference of a jointing member. In a case where the positioning projections are formed in front of a sealing projection, a larger cylindrical portion is absent around their outer peripheries. Therefore, the enlargement of the diameter of the grommet during fitting to the mating member is not restricted, resistance during fitting is alleviated, and the positioning projections are engaged in the recesses with large elastic reaction force. Hence, a click feel is excellent.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: To provide a constant velocity universal joint having a high resistance to cracking, a high dimensional stability and an excellent rolling fatigue life, the constant velocity universal joint includes an outer coupling member (5), an inner coupling member such as a tripod member (2), and a drive transmitting member such as rollers (7) operatively interposed between the outer and inner coupling members (5 and 2). At least one of the outer coupling member (5), the tripod member (2) and the rollers (7) has a carbonitrided layer and, at the same time, an austenite grain size is greater than the grade of No. 10.

Abstract: A constant velocity joint includes a male element (4) having at least two trunions (8) and a shaft (12) with an outside diameter (DAE). A respective wheel (32) is mounted to rotate on each trunion (8). The joint also includes a female element (20) having, for each wheel (32), a pair of paths (22, 24) and defining a path primary circle (PCD). The ratio of the outside diameter (DAE) of the shaft (12) to the path primary circle diameter (PCD) is greater than 0.55.

Abstract: A tripod type constant-velocity universal joint includes an outer ring having three axially-extending track grooves in its inner periphery, a tripod member mounted in the outer ring and having three trunnions extending into the track grooves, and guide blocks supported on the trunnions in the track grooves, respectively. Rolling elements are disposed in raceway grooves on opposite sides of each guide block between the guide block and the outer ring. The rolling elements are retained by retainers and a moving amount restricting mechanism restricts the moving amount of the retainers to half the moving amount of the guide blocks. Each retainer has retaining plate portions retaining the rolling elements on each side of the guide block, and a plate portion coupling together the retaining plate portions. Each restricting mechanism includes a lever pivotably supported on the plate portion and having guide grooves into which protrusions are slidably fitted.

Abstract: A wheel bearing device having a unitized hub ring, double-row bearing and constant velocity universal joint with one of double-row inner raceways formed on the joint outer ring. An end portion of the joint outer ring is fitted to an outside periphery of the hub ring through serrated portions. The hub ring is plastically deformed and expanded from an inside diameter side toward an outside diameter side by pushing a steel ball into a through hole of the hub ring preventing play in the serrated portions by the diameter expansion. A surface-hardened layer is formed at least on a base portion of the wheel mounting flange.

Abstract: A constant velocity universal joint includes an outer joint member has three track grooves extending axially in an inner circumference portion thereof with a roller guide surface extending axially on each side of the respective track grooves; a tripod member has three trunnions protruding in the radial direction; and a roller mechanism is mounted in each of the trunnions of the tripod member. The roller mechanism is capable of swinging and oscillating freely with respect to the trunnions, and has a roller guided along the roller guide surface in the direction parallel to the axis line of the outer joint member. An outer peripheral surface of the roller, which is made by ground-finishing, is in contact with the roller guide surface, and has a surface roughness of 0.35 Ra or less.

Abstract: In a no-flange type outer joint member, the amount of abrasion in a large inner diameter portion formed for a track groove is intended to be restrained. In a tripod type constant velocity universal joint including: a no-flange type outer joint member; and a roller assembly including a roller, being attached to a trunnion so as to be capable of oscillating, hardened layers are formed on portions of a large inner diameter portion of the outer joint member, which are in contact with an inclined roller assembly. In this case, a value of F/D is set equal to or less than 0.45, where a distance from a center of the track groove of the outer joint member to the ends of both the hardened layers on the side of the center of the track groove is F, and a diameter of an outer circumference of the roller assembly is D.

Abstract: A displacement joint includes an outer joint part having circumferentially spaced recesses to form tracks. A tripod is mounted in fixed rotative engagement to a driveshaft and includes a tripod spider which has spherical arms spaced circumferentially in symmetric disposition for engaging the recesses. Roller bearing assemblies are fitted in the outer joint part to support the tripod arms, with each tripod arm guided by two roller bearing assemblies. Each roller bearing assembly has a bearing shell, which receives the tripod arm, rolling members fitted with clearance in a cage and disposed between the track of the outer joint part and a contact surface of the bearing shell. The cage is guided by shoulders of the outer joint part, which laterally bound the track, wherein the cage has opposite collars in parallel relationship to the shoulders for providing an axial stop for the rolling members and the bearing shell.

Abstract: A constant velocity coupling which rotabably connects an input shaft to an output shaft by means of a control mechanism or control system which, in particular forms, includes a gimbal arrangement comprised of an inner yoke rotatably connected to an outer yoke. The control mechanism including control yoke constrains at least portions of the coupling to lie on or in association with a homokinetic plane of the coupling. In particular forms the control mechanism operates symmetrically about supplementary angle bisector.

Abstract: A displacement joint includes an outer joint part having circumferentially spaced recesses to form tracks. A tripod is mounted in fixed rotative engagement to a driveshaft and includes a tripod spider which has spherical arms spaced circumferentially in symmetric disposition for engaging the recesses. Roller bearing assemblies are fitted in the outer joint part to support the tripod arms, with each tripod arm guided by two roller bearing assemblies. Each roller bearing assembly has a bearing shell, which receives the tripod arm, rolling members fitted with clearance in a cage and disposed between the track of the outer joint part and a contact surface of the bearing shell. The cage is guided by shoulders of the outer joint part, which laterally bound the track, wherein the cage has opposite collars in parallel relationship to the shoulders for providing an axial stop for the rolling members and the bearing shell.

Abstract: Tripod type constant velocity joint has a hollow cylindrical housing fixed to the end of a first shaft and has axially extending recessed grooves opened at one axial end and located at circumferentially trisectional positions on an inner peripheral surface. A tripod has a boss fixed to the end of a second shaft with end-spherical trunnion journals radially projecting from circumferentially trisectional positions on the boss. Roller assemblies each have an inner roller fitted on the spherical surface of the trunnion journal and an outer roller supported for rotation and axial movement on the inner roller. The outer rollers are received in the recessed grooves and rollable axially of the housing. Each recessed groove has guide surfaces contacting the outer surface of the outer roller. Guide shoulder surfaces guide the outer roller axially of the housing. A relief is locally formed along a forged parting line of the trunnion journal.

Abstract: A centering device for a double Cardan universal joint is comprised of a disc-shaped body having a first and second annular face and an annular rim extending about a central axis. A first hollowed protrusion is centrally located on the first annular face, and a second hollowed protrusion is centrally located on the second annular face. A plurality of bearings are built into the disc-shaped body, extending circumferentially about the central axis. The bearings may be contained within two races, with one race located on each annular face, or the bearings may be contained within holes or slots built into the disc-shaped body.

Abstract: A tripod type constant velocity universal joint that can suppress generation of shudder by reducing the 3rd order cyclic axial force and has high rotation durability. In a double-roller tripod type constant velocity universal joint, a track gap ?1 between one of the roller guiding surfaces formed on both sides of a track groove, which is on the no-load applied side, and an outer circumferential surface of an outer roller is set to satisfy ?1>0.03/A. Also, a shoulder gap ?2 between a guide shoulder surface formed at the bottom of the track groove and a side surface of the outer roller is set to satisfy ?2>0.15×A. In both the expressions, a degree of torus A is defined as a ratio of a radius of curvature r of a generatrix of the outer circumferential surface to a radius R of an outer circumference of the outer roller (A=r/R).

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: A fixed center constant velocity joint includes an outer race having races formed with a spherical surface, a shaft, a driver connected to the shaft and including radially directed pivot shafts, first and second bipods each located on an opposite axial side of the driver and including radially directed trunnions, equalizers fitted on a pivot shaft and driveably connected to the first and second bipods for pivoting the bipods relative to one another, and bearings rotatably supported on a trunnion and including a spherical surface conjugate to and engaged with a surface of a race.

Abstract: The present invention discloses a synchronizing revolute joint with an external joint member, an internal joint member and rolling bearings arranged between the external joint member and the internal joint member. Each rolling bearing includes an inner race with a rolling bearing inner surface and an outer race with a rolling bearing outer surface. Between the inner race and the outer race there is arranged a plurality of rollers enabling the outer race to roll on the inner race. One of the inner race and the outer race includes an axial guide that determines the position of the rollers in relation to that race in the axial direction. The inner race and outer race are also axially displaceable against each other.

Abstract: An annular support ring 32 is fitted onto the outer periphery of each trunnion 22. This support ring 32 and the roller 34 are unitized via a plurality of needle rollers 36 to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion 22 has an outer periphery of straight shape, parallel to the axis of the trunnion 22. In cross section, the trunnion 22 has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring 32 is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions 22 and the provision of predetermined clearances between the trunnions 22 and the support rings 32, to allow the support rings 32 to move along the axial directions of the trunnions 22 as well as make tilting movements with respect to the trunnions 22.

Abstract: A torque transfer device is disclosed that utilizes one or more universal joints to transfer rotary motion between first and second shafts that rotate about non-aligned axes of rotation. The torque transfer device maintains these rotational axes at a fixed angle while allowing the shafts to freely rotate. In order to maintain the rotational axes of the shafts at a fixed angle relative to one another, a stabilizer is utilized. In one embodiment, first and second sections of the stabilizer, which are disposed at a desired angle to one another, are disposed within central bores of the first and second shafts. In this embodiment, the first and second shafts are interconnected with a ring-type universal joint. The ring type universal joint allows the stabilizer to pass between the central bores of the two shafts without interfering with the operation of the joint connecting the two shafts.

Abstract: The joint comprises two spiders 18 and a central core 16 forming a housing 24 for the sliding movement—in a transverse plane—of a basically discoidal constraint member 20 forming the seats 20A for the spherical end heads 1 OC, 14C of the two forks. The constraint member 20 moves about inside the housing 24. Between each of the two surfaces 24A, 24B and the opposing face of the constraint member 20, an elastic laminar ring 40 shaped like a Belleville washer is interposed, its annular edges being in continuous annular contact with the surface 24A or 24B and with the opposing face of the constraint member 20.

Abstract: A double-jointed cardan shaft for vehicles includes a first yoke journal assembly disposed in a first fork joint, the first fork joint including a ball calotte, a second yoke journal assembly disposed in a second fork joint, and a connection element connecting the first and second fork joints. A centering ball is disposed in the ball calotte and has a bore. A first cavity is formed between the centering ball and the ball calotte. An elastic gasket disposed outside of the ball calotte forms a second cavity between the elastic gasket and the ball calotte. A centering pin is connected to the second fork joint and disposed in the bore, and a plurality of lubricant recesses for a lubricant are disposed at an interface between the centering pin and the bore. The centering ball includes at least one indentation extending along an outer circumferential surface of the centering ball such that no lubricant may pass from the first cavity to the second cavity.

Abstract: A tripot universal joint has a plurality of roller assemblies mounted on trunnions of a drive shaft and run in longitudinal tracks of a housing. Each roller assembly includes a roller and a needle roller bearing for rotatably mounting the roller on a roller carrier. Each needle bearing includes a plurality of needle rollers and a cage. The cage has spaced end rings that are connected by a plurality of cross bars to retain the needle rollers with respect to the roller in the axial direction, and conformations that cooperate with the roller to retain the cage with respect to the roller in the axial direction.

Abstract: Tripod joints have a joint outer part and a joint inner part which are in driving connection to each other with cylindrical rolling bodies being connected in between and axial displacement and pivotability being ensured. The longitudinal axes of adjacent rolling bodies are arranged at an acute angle to one another. This may result in an improved mechanical behavior of the tripod joint particularly during pivoting. The tripod joints may be suitable for the displaceable and pivotable driving connection of two shaft ends, in particular in conjunction with drive trains or side shafts of motor vehicles.

Abstract: The joint comprises two spiders (10, 14) and a central core forming a cavity for sliding movement in a transverse plane for two constraint members (120) with seats (120A) for the spherical heads (10B; 14B) on the ends of the two forks (10, 14); a divider (150) divides said cavity into two housings (124) for the two constraint members (120).

Abstract: A shaft assembly having an inner shaft extending lengthwise within an outer shaft, and a slip joint enabling relative axial movement between the shafts. The slip joint includes roller tracks on the outer shaft, and rollers on the inner shaft in rolling engagement with the roller tracks.