Abstract: A mounting device includes a first mount portion and a second mount portion. The first mount portion is in communication with a first pin extending along a first axis. The second mount portion is in communication with a pair of opposing second pins extending along a second axis different than the first axis. The second pins are in rotational communication with and extend outward from the first pin. The first and second mount portions are configured to translate along the first and second axes and rotate about the first and second axes with respect to one another.

Abstract: A universal coupling is provided that aims to achieve constant velocity between the input and output shafts. The universal coupling also aims to increase the angle between input and output shafts over conventional double Cardan joints while maintaining constant velocity or near constant velocity therebetween. The universal coupling can employ a Sarrus type linkage in-between two universal joints of the Cardan type in a configuration that aims to achieve joint angles up to and including 90 degrees in the Y-Z plane, while maintaining constant velocity or near constant velocity therebetween.

Abstract: In a sliding type constant velocity universal joint which includes a coil spring (14) employed to urge an intermediate shaft (13), a cylindrical portion (34) of a spring receptacle which supports an end of the coil spring (14) rises by a height h3, so that an edge (37) of the cylindrical portion (34) makes contact with a lower end surface of an outer ring (26) of a roller assembly (28) of an inner joint member (12) when the constant velocity universal joint takes a maximum operating angle.

Abstract: A constant velocity joint comprising a first shaft (2) rotating about a first rotation axis (X1), a second shaft (3) rotating about a second rotation axis (X2), a triad of yokes (5) comprising a control yoke (6), a first shaft yoke (7) and a second shaft yoke (8), the first shaft yoke (7) being pivotally mounted on the first shaft (2) with the pivot axis (A1) oblique to the first rotation axis (X1), the second shaft yoke (8) being pivotally mounted on the second shaft (3) with the pivot axis (A2) oblique to the second rotation axis (X2), the three yokes of the triad of yokes (5) being pivotally mounted to each other to pivot about a common axis (C) passing from the center (4) of the joint, a set of additional pivotally mounted yokes (9) providing support to the control yoke (6) so that the transmission ratio between the first shaft (2) and the second shaft (3) of the constant velocity joint (1) remains strictly at 1:1.

Abstract: A folding bellows arrangement, e.g., for a tripod joint unit, may comprise a joint outer part with a groove, a folding bellows with a joint collar region for attachment to said joint outer part, and an adapter ring. The joint collar region may comprise a joint binder seat region. The adapter ring may have an inner surface that is matching in a cross section to an outer contour of the joint outer part. On an inner area of the joint collar region and within the joint binder seat region of the folding bellows, at least one bead may be arranged. The bead matching a groove may be arranged on an outer area of the adapter ring. The groove of the adapter ring may correspond to at least one first sealing lip arranged on an inner area of the adapter ring, and at least one second sealing lip may be arranged on the inner area of the adapter ring. The first and second sealing lips may be arranged within the groove of the joint outer part.

Abstract: A sliding type tripod constant velocity joint includes a cage that supports the rolling elements such that the rolling elements circulate on an outer periphery of the intermediate member. The cage includes the first, second, third and fourth circulating paths having opening parts over an entire length in an outer peripheral side of the cage and widths of the opening parts of the third and fourth circulating paths are narrower than widths of the opening parts of the first and second circulating paths.

Abstract: A connection apparatus includes a first flange member having a threaded portion; a second flange member having a threaded portion; a central annular connecting flange positioned in between the first and second flanges; a pair of cross trunnion assemblies being next to and on opposing sides of the annular connecting flange; a pair of threaded collars connecting each trunnion assembly to the connecting flange and a flange; a plurality of key and slot connections that provide an interlocking interface between each flange and each trunnion assembly; and bolted connections the secure each trunnion assembly to the central annular connecting flange.

Abstract: A constant velocity joint for a drive system comprises: a tripod housing coupled to the first rotating shaft and having a plurality of guide grooves therein, each guide groove extending in an axial direction of the tripod housing; a spider coupled to the second rotating shaft and having a plurality of trunnions, each trunnion positioned in a corresponding guide groove of the tripod housing; and a spherical roller disposed between the trunnion and the guide groove of the tripod housing, and a plurality of needle rollers disposed between the trunnion and spherical roller. Each spherical roller is in angular contact with the guide groove of the tripod housing with two contact points displaced relative to a pitch circle diameter line of the tripod housing. The ratio of the length (CL) between two contact points of tripod housing groove to the length (SL) between two edges of spherical roller is between 0.5 and 0.

Abstract: A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on both side surfaces and opposing the side surfaces of a corresponding one of the raceway grooves.

Abstract: A rolling element of a tripod joint and a tripod joint which has a rolling element is provided. In the rolling element, an annular spring element is provided which spreads the housing inner body and a first housing part and a second housing part of the rolling element apart and presses rolling bodies of the rolling element against raceways of the outer part of the tripod joint.

Abstract: A sliding type tripod constant velocity joint includes a pair of intermediate members arranged so as to sandwich a tripod shaft part from both sides of side surfaces of a raceway groove of an outer ring and to provide so as to be oscillated relative to the tripod shaft part. The sliding type tripod constant velocity joint further includes a plurality of rolling elements provided between side surfaces of the raceway groove and power transmission surfaces of the intermediate members opposing the side surfaces of the raceway grooves and a cage that supports the rolling elements such that the rolling elements circulate on outer peripheries of the intermediate members.

Abstract: A constant velocity joint comprises: a hollow housing having a plurality of axially-extending guide grooves; a tripod having a plurality of trunnions positioned in the guide grooves of the hollow housing; and a roller assembly including an inner roller having a spherical inner face and an outer roller mounted on an outer face of each inner roller, the roller assembly for transmitting a load between the first and second rotating shafts. A cross sectional shape of the trunnion, taken in a direction perpendicular to the longitudinal axis of the trunnion, has a thickness at one or both lateral sides of the trunnion the same as or slightly less than a maximum non-interfering thickness of the trunnion, the maximum non-interfering thickness measured with the inner roller inclined by a predetermined degree relative to the longitudinal axis of the trunnion to assemble the trunnion into the inner roller.

Abstract: A sliding-type tripod constant velocity joint that includes needle units, each of which is able to prevent rolling elements from falling off in a state where the rolling elements are introduced in a cage, is provided. Each cage (60) of a constant velocity joint (1) forms circulation paths that are trajectories of circulating rolling elements (50), and is formed of a pair of first circulation path forming member (70) and second circulation path forming member (80) that are coupled to face each other so as to respectively support both axial ends of the rolling elements (50). Then, at least one of the circulation path forming members (70 (80)) has a window portion (75 (85)) that is open so as to be able to introduce the rolling elements (50) laterally with respect to a circulating direction into the circulation paths and a rib portion (76 (86)) that is formed so as to extend from a periphery of the window portion (75 (85)) in an introducing direction in which the rolling elements (50) are introduced.

Abstract: A constant velocity universal joint having a recess-projection engagement configuration in which backlash at a shaft connecting region does not easily occur, and an inner joint component and a shaft can he firmly connected. hi the constant velocity universal joint, the inner joint component and the shaft (5) fitted into an axis hole (22) of the inner joint component are connected by die recess-projection engagement configuration. Engagement contacting regions (38) of projections (35) and recesses (36) corresponding thereto are in close contact over the whole region.

Abstract: A heat treatment method is capable of molding, by mobile quenching of induction quenching, an outer joint member of a tripod type constant velocity universal joint having excellent strength without forming hardened layers in larger radially-inner portions. Mobile quenching is performed in such a manner that a high-frequency induction heating coil is moved in an axial direction relative to an outer joint member, and thus hardened layers are formed on the roller guide surfaces. Magnetic field line cut-out bodies for cutting out generated magnetic field lines are arranged on the high-frequency induction heating coil. The larger radially-inner portions become an unquenched portion by cutting out the magnetic field lines with the magnetic field line cut-out bodies.

Abstract: A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and a pair of intermediate members which are arranged so as to sandwich a corresponding one of the tripod shaft parts from both sides of side surfaces of the raceway grooves and which are provided so as to be oscillated relative to the corresponding one of the tripod shaft parts.

Abstract: A constant-velocity drive system for an aircraft rotor has a gimbal mechanism and a differential torque-combining mechanism. The gimbal mechanism has gimbals driven in rotation by a rotor mast about a mast axis, the gimbals providing for gimballing relative to the mast about gimbal axes generally perpendicular to the mast axis. The differential torque-combining mechanism is connected to the gimbal mechanism and configured to be driven in rotation about the mast axis by the gimbal mechanism. The differential mechanism is capable of gimballing relative to the mast about the gimbal axes, the differential torque-combining mechanism having an output component attached to a yoke of the rotor for driving the yoke in rotation with the differential torque-combining mechanism.

Abstract: An outer joint member which has a cup portion formed, on the inner surface thereof, with a plurality of track grooves extending in the axial direction, the cup portion having a chamfering portion provided in the region between the track grooves at the inner peripheral edge thereof, at least the inner surface and the outer surface of the cup portion being shaped by forging. The chamfering portion includes a first chamfering portion for allowing the angle shift of the joint, and second chamfering portions which are provided adjacent to both peripheral sides of the first chamfering portion and are inclined in the direction different from the first chamfering portion.

Abstract: A sliding type tripod constant velocity joint includes an outer ring having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on outer surfaces and opposing the side surfaces of a corresponding one of the raceway grooves.

Abstract: An outer ring, an inner ring and a ball that are a rolling contact member formed of sintered ? sialon inexpensive and capable of reliably ensuring sufficient durability, is constituted of a sintered body containing ? sialon as a main component and having a remainder formed of an impurity, and the outer ring, the inner ring and the ball have raceway/rolling contact surfaces, i.e., an outer ring raceway surface, an inner ring raceway surface and a ball rolling contact surface included in a portion having an outer ring high density layer, an inner ring high density layer and a ball high density layer higher in density than an inner portion.

Abstract: A tripod joint is disclosed which has an outer joint part and an inner joint part. The outer joint part includes a first longitudinal axis and a longitudinally running cavity with an open end. Three longitudinally running recesses are formed in the outer joint part. The inner joint part includes a second longitudinal axis and comprising at least one central body on which are integrally formed three journals with journal axes which extend radially from the second longitudinal axis. In each case, one roller body is arranged on the journals, which roller body has at least one outer ring, a closed inner ring and bearing bodies which are arranged in between. Each roller body is additionally, in each case, held in the recesses in a longitudinally moveable manner, and a rotation of the closed inner ring about the respective journal is blocked. Also proposed is a roller body with a non-circular or angular inner ring.

Abstract: A forging method and a full-enclosed forging die contribute to the alleviation of an enclosing force applied to dies and in which a relatively small enclosing apparatus can be used even with respect to larger-sized products. A tripod type constant velocity universal joint is formed with a tripod member molded with the full-enclosed forging die. The full-enclosed forging die includes openable/closable dies and punches for pressing a material between the dies. From the forging die, the tripod member including a boss portion and shaft portions protruded radially from the boss portion is molded.

Abstract: A tripot universal joint includes a first rotatable shaft member having a longitudinal axis and three longitudinal guide channels, each having two opposing concave side surfaces and a back surface. The joint also includes a rotatable second shaft member having a longitudinal axis and comprising a spider having three radially extending trunnions equally, each of the trunnions having a convex outer surface disposed within an associated longitudinal guide channel. The joint further includes three rotatable ball assemblies, each disposed on a convex outer surface of a trunnion, each ball assembly having an outer ball with a convex outer surface that is disposed within the concave side surfaces of the longitudinal guide channel with which it is associated for moveable engagement within the channel and an inner ball with an inner surface that is rotatably disposed on the convex surface of the trunnion with a detachably reattachable coupling.

Abstract: The outer peripheral surface of the boot attaching section of an outer joint member (2), when viewed in cross section, is non-cylindrical, with a large diameter section (22a) and a small diameter section (22b) appearing alternately.

Abstract: A tripod-type constant-velocity universal joint has a journal raw profile with reduced weight and a reduced number of manufacturing steps. A leading end corner portion of the journal raw profile is held with use of a die and forged. By the forging, at the part including an elliptically longitudinal side relatively on a leading end portion side of an outer peripheral surface of each of journals, edge portions reducing a lateral sectional area of each of the journals toward a leading end side thereof are formed, and tapered surfaces are formed on the leading end side of the edge portions. Centering on each of the journals is performed by causing two points on an elliptically longitudinal side of the edge portions to abut against a centering jig.

Abstract: A constant velocity universal joint has improved sealability of the boot thereof and facilitates the positioning of the end sections of the boot in the axial direction at low cost while ensuring the strength of the outer race thereof. Protruding sections having a pointed shape at the tip ends thereof and having a triangular shape in cross section are provided on the inner peripheral surfaces of the large-diameter end section and the small-diameter end section of a boot. Sealing sections are respectively disposed annularly on the inner peripheral surfaces of the large-diameter end section and the small-diameter end section on the portions equally distant from the protruding sections on both sides thereof in the axial direction.

Abstract: A secured bearing arrangement for at least one journal of a universal joint, said journal being rotatable about an axis of rotation while being mounted in a housing. The bearing arrangement comprises at least one universal joint housing that is provided with at least one bore which extends in the direction of an axis and has an internal surface as a bearing surface. A bearing bush which has a bearing axis and inside which the journal is mounted so as to be rotatable about its axis or rotation, is mounted on the internal surface within the bore. A securing element allows the bearing bush to be secured within the bore in one axial direction of the bearing axis, said one axial direction facing away from the journal. The securing element is disposed between the mounted bearing bush and the universal joint housing in a radial direction of the bearing axis while being connected to the universal joint housing between the mounted bearing bush and the universal joint housing.

Abstract: A tripod type constant velocity joint comprises a housing having three track grooves defined at trisected positions of the housing and extending in an axial direction, and a spider having three -trunnions projectedly formed at trisected positions of the spider to be respectively inserted into the track grooves, each trunnion having a generally oval or elliptical cross-sectional shape and including at least one independent contact surface at each of two opposing sides subjecting to a load. Inner rollers each has an inner surface of a concavely curved contour for receiving a corresponding trunnion therein, and an outer roller is mounted to each inner roller with a plurality of needle rollers engaged there-between.

Abstract: A homokinetic joint is described that comprises a male member with several arms, a female member for receiving the male member, a roller mounted and freely rotating on each arm, a spring provided between the male member and the female member and for urging the male member away from the female member, and a cup provided between the spring and the male member. The cup includes a skirt comprising an outer surface designed to contact at least one of the rollers when the joint is in a separated state.

Abstract: A silicone boot for a constant velocity universal joint includes a larger diameter portion attached to an outer joint member of a constant velocity universal joint, a smaller diameter portion attached to a shaft coupled with an inner joint member of the constant velocity universal joint, and a bellows portion, which is arranged between the larger diameter portion and the smaller diameter portion, and has peak portions and valley portions formed alternately with each other. The smaller diameter portion includes a shaft attachment portion having a radially outer surface in which a fitting groove for attachment of a boot band is formed, and a thin portion extending from the shaft attachment portion so as to be coupled with the bellows portion through intermediation of a thick portion and allowing buckling deformation with respect to the shaft attachment portion and the bellows portion.

Abstract: A sliding-type tripod-shaped constant-velocity universal joint capable of being downsized while reducing induced thrust force. The constant-velocity universal joint includes: an outer race; a tripod including a boss portion and three tripod-shaft portions being inserted into roller grooves; and rollers. And, a shaft-axis-wise width of the tripod-shaft portions is formed smaller as it goes from the root side to the leading-end side in a torque transmission region of the tripod-shaft portions. Further, a torque-transmission-wise width of the tripod-shaft portions is formed greater as it goes from the root side to the leading-end side in the torque transmission region when defining a direction that intersects with the shaft axis and the tripod-shaft portions orthogonally as a torque transmission direction.

Abstract: A constant velocity ball joint is disclosed. The constant velocity ball joint may be a counter track joint, and may include first and second track pairs that form an opposite opening angle. The first track pairs may be provided with a track inflection point. The second track pairs may each form a second track centerline that has a path other than a singular circular path in a section between the central joint plane and the connection side.

Abstract: A constant velocity joint comprises: a hollow housing having a plurality of guide grooves therein, a tripod having a plurality of trunnions. Each trunnion includes two opposing spherical contact surfaces disposed in the directions subject to load, and two opposing side surfaces disposed between the two opposing spherical contact surfaces and in the directions perpendicular to the spherical surfaces and not subjecting to the load. A cross sectional shape of the trunnion, the cross section taken in a direction perpendicular to the longitudinal axis of the trunnion, has a thickness at one or both lateral sides of the trunnion the same as or slightly less than a maximum non-interfering thickness of the trunnion. Preferably, a groove of circular or oval shape is formed on each of the two opposing spherical contact surfaces, the groove for retaining grease therein to lubricate contact surfaces.

Abstract: The constant velocity pivot joint includes an outer joint part (12), an inner joint part (14) and rollers (28) disposed between the outer joint part (12) and the inner joint part (14). The rollers (28) each comprise an inner ring (48) with an inner roller surface (54) and an outer ring (42) with an outer roller surface (56). A plurality of rolling members (46) is disposed between the inner ring (48) and outer ring (42) so that the outer ring (42) can roll off on the inner ring (48). The inner ring (48) forms an axial guide, which fixes the position of the rolling members (46) relative to the inner ring (48) in the axial direction. Furthermore, an inner ring (48) and the outer ring (42) are axially displaceable relative to each other to a limited extent.

Abstract: A tripot universal joint includes a first rotatable shaft member having a first longitudinal axis and three longitudinal guide channels disposed parallel to the first longitudinal axis, each having two opposing concave side surfaces and a back surface. The joint also includes a rotatable second shaft member having a second longitudinal axis and comprising a spider having three radially extending trunnions equally, each of the trunnions having a convex outer surface disposed within an associated longitudinal guide channel. The joint further includes three rotatable rollers, each rotatably disposed on a convex outer surface of a respective trunnion, each roller having a convex outer surface that is configured for disposition within the concave side surfaces of the longitudinal guide channel with which it is associated for moveable engagement within the channel and an inner surface that is rotatably disposed on the convex surface of the trunnion.

Abstract: A pod type universal joint has a roller assembly rotatably carried by a number of trunnion journals. The roller assembly includes a spherical roller having its outer peripheral surface of a true sphere-shape and needle rollers arranged between the spherical roller and each of the trunnion journals. A raceway for the needle rollers and flanges for restricting an axial movement of the needle rollers are formed on an outer periphery of each of the trunnion journals. A projection beyond the circumscribing circle of the needle rollers is provided on the outer periphery of the tip end of each of the trunnion journals by performing plastic working on the tip end surface of each of the trunnion journals.

Abstract: A safety guard for a double universal joint (1) rotatingly arranged around an axis of rotation has a tubular protective cone (15). The cone (15) has a connection mechanism to non-rotationally connect the protective cone (15) to a drive shaft guard of a shaft connected to the double universal joint (1). A sliding ring (16) rotatingly supports the safety guard on the double universal joint (1). It is non-rotationally connected to the protective cone (15). An adaptor ring (22) is non-rotationally connected to the protective cone (15). A boot (23) is non-rotationally connected to the adaptor ring (22). The boot (32) has a connection mechanism to non-rotationally connect the boot (23) to a stationary component.

Abstract: A boot-mounting structure for a constant velocity universal joint has a configuration which can prevent a crack caused by interference with a boot band while maintaining a stable sealing property. The boot band (69) is fitted into a fitting groove of a silicone boot (65), and is decreased in diameter while being attached into the fitting groove, to thereby fix the silicone boot (65). The boot band (69) is formed into an annular body not provided with a folded-back portion. There is provided a no-interference structure means (S) for preventing interference caused, when the boot band is decreased in diameter, between an axial outer-peripheral-edge portion (69a or 69b) of the band (69) and a bottom end portion (82a or 82b) of the fitting groove (75) corresponding thereto.

Abstract: A constant velocity universal joint smoothly rotates under a high operating angle and large torque and reduces an excessive load applied to the cage. The universal joint includes an outer joint member having an inner spherical surface with multiple track grooves and an inner joint member having an outer spherical surface with multiple track grooves paired with the track grooves of the outer joint member. The universal joint also includes multiple balls interposed between the track grooves of the inner and outer joint members to transmit torque and a cage interposed between the outer joint member and the inner joint member to retain the balls. A tapered relief portion retracted with respect to the outer spherical surface is formed with low curvature at a back end portion of the outer spherical surface of the inner joint member to be smoothly continuous with the outer spherical surface.

Abstract: A constant velocity joint for a drive system with a first rotating shaft and a second rotating shaft, comprises: a hollow housing having a plurality of guide grooves therein, the guide grooves extending in an axial direction of the housing and spaced equally apart in a circumferential direction of the housing; a tripod having a plurality of trunnions, each trunnion positioned in a corresponding one of the guide grooves of the hollow housing; and a roller assembly disposed on each trunnion, the roller assembly including an outer roller for rollably receiving in the corresponding guide groove; wherein the outer roller includes a convex outer surface, the convex outer surface having a first radius (Rry) seen from a cross section taken in an orthogonal direction relative to a central axis of the outer roller, the convex outer surface having a second radius (Rrx) seen from a cross section taken along the central axis of the outer roller, a center of the second radius (Rrx) displaced outwardly from a center of the

Abstract: An intermediate member is rockably provided around an outer periphery of a corresponding one of tripod shaft portions. Shaft-like rolling elements are retained by corresponding retainers so that the shaft-like rolling elements are able to circulate around the corresponding intermediate members and are able to roll between side surfaces of a corresponding one of raceway grooves of an outer ring and a torque transmitting surface of a corresponding one of the intermediate members. Then, raceway recesses are formed on the side surfaces of each raceway groove so as to extend in a direction of a rotation axis of the outer ring. The shaft-like rolling elements are fitted in the corresponding raceway recesses and are able to roll along bottom surfaces of the respective raceway recesses. Thus, the retainers are arranged outside the raceway recesses.

Abstract: A power transmission shaft mitigates the concentration of both tensile stress and shear stress to achieve an improvement in terms of fatigue strength. A male spline section is formed on an outer periphery of the power transmission shaft. On a valley section of the male spline section, at an axially opposite end side portion thereof, there is provided a diameter-expanded section whose outer diameter dimension is gradually increased toward an axially opposite end. Rounded sections having a circular arc cross-section are provided on both circumferential sides of the diameter-expanded section. A radius of curvature of the rounded sections is gradually increased toward the axially opposite end.

Abstract: A needle bearing functioning as a rolling element comprises a uniform-diameter body part and bottom surfaces shaped in flat surfaces. A tapered reduced-diameter part and a chamfered part are interposed between the body part and the bottom surface. A gentle reduction in diameter is first made by the tapered reduced-diameter part, and then a relatively sharp reduction in diameter is made by the chamfered part. Consequently, in the needle bearings adjacent to each other, their tapered reduced-diameter parts are separated from each other.

Abstract: A constant velocity universal joint is provided, having a hollow outer joint member, an inner joint member, an outer roller including a cylindrical surface, an inner roller including a concave sphere, and plural leg shafts each including a convex sphere formed in a tip portion and engaging with the concave sphere, where the cylindrical surface of the outer roller satisfies the following: W1>PCR(1?cos ?)/2+?3R3+?2R1 W2>3PCR(1?cos ?)/2??3R3+?2R1, where W1 indicates a length of the cylindrical surface from a center of the leg shaft and an intersection of the cylindrical surface and an upper side taper portion of the outer roller, W2 indicates a length of the cylindrical surface from the center of the leg shaft and an intersection of the cylindrical surface and a lower side taper portion of the outer roller, and ? indicates a maximum joint angle.

Abstract: A constant velocity joint for a drive system of a vehicle comprises: a spider trunnion for transmitting torque between first and second shaft of the drive system, the spider trunnion including a spherical outer surface; and a roller assembly operatively attached on the spider trunnion, the roller assembly including an inner roller, an outer roller, and a plurality of needle rollers engaged between the inner and outer rollers, wherein the inner roller includes a tapered outer surface with a taper angle (?t), and the outer roller includes a tapered inner surface with the same taper angle (?t). The taper angle (?t) is preferably in a range from about 0.23° and to about 1.

Abstract: An articulating joint apparatus includes a first rotational member having an axis, a second rotational member coupled with and positioned generally coaxial to the first rotational member, and a boot cover assembly for sealing at least part of the first rotational member to the second rotational member. The boot cover assembly is selectively coupled to both the first rotational member and the second rotational member. The joint apparatus also includes an insert positioned at least partially between the first rotational member and the second rotational member. The insert will deform in response to axial movement of the second rotational member relative to the first rotational member.

Abstract: A constant velocity joint includes: a hollow housing fixed to a first rotating shaft, an inner face of the housing including a plurality of guide grooves; and a tripod disposed at an end of a second rotating shaft, having a plurality of trunnions each positioned in a corresponding guide groove; and an inner roller mounted to each trunnion, an outer roller mounted on each inner roller. Each trunnion includes an a spherical surface in a circumferential area subjecting to the load, and a cylindrical protrusion protruded from the spherical surface of the trunnion, the cylindrical protrusion having an spherical contact surface at its distal end with a gap between the trunnion and the the respective inner roller, and the inner face of each inner roller includes a pair of guide grooves for receiving the cylindrical protrusions.

Abstract: A tripod type constant velocity joint comprises a housing having three track grooves defined at trisected positions of the housing and extending in an axial direction, and a spider having three trunnions projectedly formed at trisected positions of the spider to be respectively inserted into the track grooves, each trunnion having at least two polygonal surfaces at each of two opposing sides subjecting to a load. Inner rollers each has an inner surface of a concavely curved contour for receiving a corresponding trunnion therein, and an outer is mounted to each inner roller with a plurality of needle rollers engaged there-between.

Abstract: Universal joint (100) includes a centering mechanism (100A) for supporting the universal and forcing the two joint halves to operate at the same angle thereby causing the joint to operate at constant velocity at all angles. Each shaft (134, 135) of the joint (100) is rotatably connected to the centering mechanism (100A). Movement of one of the shafts (134, 135) at an angle relative to the longitudinal axis of the coupling yoke (136) is transmitted to the other shaft (135, 134) by the centering mechanism (100A) and the centering mechanism (100A) causes the other shaft (135, 134) to likewise move at the same angle relative to the longitudinal axis of the coupling yoke (136). The centering mechanism(100A) includes cam rods (102, 103) supported within a cam tube (101), which arrangement allows a full range of movement of the shafts (134, 135) at angles of 90°.

Abstract: A constant velocity joint for a drive system having a first rotating shaft and a second rotating shaft, wherein the constant velocity joint comprises: a hollow housing fixed to an end of the first rotating shaft, an inner face of the housing including a plurality of guide grooves extending in an axial direction of the housing, each groove having a pair of opposing side faces; and a tripod disposed at an end of the second rotating shaft, having a plurality of trunnions each positioned in a corresponding one of the guide grooves; and, an inner roller mounted to an outer end portion of each of the trunnions, an outer roller mounted on an outer face of each inner roller with needle rollers engaged between the inner and outer rollers for transmitting a load between the first and second rotating shafts to drive the driving system.