Abstract: An improved boot for use in sealing a constant velocity joint and ball spline joint assembly includes a plurality of articulating convolutes, a grease catching member, and a first stabilizing member adapted to ride above an inner race of the ball spline joint to join the plurality of articulating convolutes and the grease catching member and provide stability at high speed. The boot further includes a plurality of plunging convolutes and a second stabilizing member adapted to ride above an outer race of the ball spline joint to join the plurality of plunging convolutes and the grease catching member and provide additional stability.

Abstract: A boot for constant-velocity universal joint includes a major-diameter fastener, a minor-diameter fastener, and a bellows. The bellows includes a first root, a first crest, a second root, a second crest, a third root, a third crest, a fourth root, a fourth crest, a fifth root and a fifth crest. The first crest, the second crest, the third crest, the fourth crest and the fifth crest have a top, respectively, and the tops of the second crest, third crest and fourth crest are disposed on an outer peripheral side with respect to a line “L1,” which the tops of the first crest and fifth crest make therebetween, in a cross section involving the central axis of the bellows.

Abstract: A convoluted boot (21) for sealing an annular chamber (28) between two articulating and plunging joint parts. The boot includes a first boot portion (22) having a first collar (23) and a second collar (24), a second boot portion (25) having a third collar (26) and a fourth collar (27), wherein the second boot portion (25) is at least partially positioned inside the first boot portion (22) and wherein the third collar (26) has a smaller diameter than the first collar (23), and wherein the first collar (23) is firmly connected to the first one of the parts (12), the third collar (26) is firmly connected to the second one of the parts (15) and the fourth collar (27) is firmly and sealingly connected to the second collar (24), and the fourth collar (27) with the second collar (24) is axially displaceable relative to the second one of the parts (15).

Abstract: A joint boot, wherein sealing performance of a large-diameter attachment part to an outer casing is enhanced, includes a large-diameter attachment part 2, a small-diameter attachment part 4 and a bellows part 5. The large-diameter attachment part 2 is provided on its inner periphery with plural convex portions 7 and constructed to be capable of externally fitting in plural recessed portions 8 formed on the outer periphery of the outer casing 1. The large-diameter attachment part 2 and the bellows part are formed in separate bodies, and a fit cylinder part 6 is extended at one extremity of the bellows part 5.

Abstract: A bellow assembly covers portions of a tie rod and a steering gear housing of an automotive vehicle. The bellow assembly includes a first ring and a bellow. The first ring has a cylindrical portion formed to be press fit onto the tie rod. The bellow has an outer end axially retained by the first ring for coupling the bellow to the tie rod. The outer end of the bellow is rotatable relative to the first ring to facilitate an alignment of vehicle wheels.

Abstract: A ball and socket joint bellows seal is provided with a ball pivot pin with a connection piece, a bellows with an annular engagement surface with a sliding ring groove and a bellows seal element. The bellows seal element has a connection piece sealing face statically engaged with said connection piece, a radially extending sealing portion and a sliding ring portion connected to said radially extending sealing portion and extending into the sliding ring groove.

Abstract: A convoluted boot for sealing an annular gap between two parts which are connected to one another in a rotationally fast way, which can be articulated relative to one another and which are axially displaceable relative to one another, especially of a constant velocity plunging joint, consisting of includes a low-strain polymer hard material having a first larger collar (11) to be secured to a first component, a second smaller collar (12) to be secured to a second component and a plurality of annular fold units which extend between the first collar and the second collar and which, in the form of the outer folds consisting of have two annular flanks (31, 32), and form a fold peak (21) between two fold valleys (22). In a first group (A) of at least three annular folds with a connection to the first collar 11 annular folds, the diameters of the fold peaks (21) and fold valleys (22) decrease in the direction from the first collar to the second collar.

Abstract: A boot fitting structure is fitted onto an axial component to protect it from a dirty environment including outside dust. The boot has a pair of annular grooves and an annular lip between the pair of annular grooves on an inner surface of the boot. The annular lip does not project from an inner surface toward a centerline of the boot. An annular protuberance is provided between the boot and a clamp, through which clamping force from the clamp is concentrated on the annular lip, so that the annular lip is elastically deformed and pushed toward outside of the axial component. Therefore, the axial component can be inserted into the boot without interference between the annular lip and the axial component. Furthermore, the annular lip is free from damage by interference between the annular lip and the axial component.

Abstract: A protection arrangement for a double universal joint (1) for drives of agricultural implements has a first protection element (11), an annular second protection element (15) and a third protection element (18). The first protection element (11) has first holding projections (14) circumferentially distributed on its outer circumference (13) close to the first front edge. The first holding projections (14) project beyond the outer circumference (13) and form at least over a circumferential edge portion, distanced to the first front edge, a groove. A support tab projects beyond the first front edge. The second protection element (15) has second holding projections (17) circumferentially distributed on its outer circumference close to the second front edge. The second holding projections (17) project beyond the outer circumference and form, at least over a first circumferential edge area close to the second front edge, a second groove.

Abstract: To protect a joint from exposure to contaminants and loss of lubricant disposed within a joint a traditional joint includes a sealing system. Typically the sealing system includes a boot and a boot cover. To produce a more effective joint, the sealing system of the present invention further includes a shield to protect the boot and the boot cover from exposure to contaminants by providing a barrier therebetween. The joint of the present invention includes a shield having several embodiments including an elastomer sleeve, a rigid cylindrical tube and a thermoplastic second boot.

Abstract: A slip spline boot for use in a constant velocity joint of a vehicle drive line includes a plurality of bellows. The plurality of bellows are arranged between a first and second end of the slip spline boot. The plurality of bellows have a specific peak to peak distance and a specific bellow angle for each of the bellows. The symmetrical boot will have the exact same peak to peak distance and bellow angle for each of the plurality of bellows on the slip spline boot. The slip spline boot is made of a high temperature high stiffness thermoplastic elastomer.

Abstract: A boot seal for a mechanical joint with a rotary joint member. The boot seal includes a flexible body portion and a flange end that is coupled to an end of the body portion. The flange end includes a flange seal portion, which is configured to seal against the joint member in an axial direction, and an annular lip that extends circumferentially about the seal portion and shields the flange seal portion from debris and moisture.

Abstract: A method for manufacturing a driveshaft for use in a vehicle drive train system that is axially collapsible in the event of a collision to absorb energy. A workpiece, such as a hollow cylindrical tube, is deformed by hydroforming to provide an axial collapse initiation zone. The axial collapse initiation zone can be defined by a plurality of axially extending undulations or corrugations that are formed in a central portion of the tube. The axial collapse initiation zone is designed to accommodate the transmission of torque through the driveshaft without any deformation under normal operating conditions. However, if a relatively large axial force is applied to the front and rear end portions of the driveshaft, the axial collapse initiation zone is designed to allow relative axial movement to occur between the front and rear end portions of the driveshaft. Such collapsing functions to absorb energy during a collision, thereby providing additional safety to the occupants of the vehicle.

Abstract: In a boot including a larger cylindrical portion having a thick-walled portion and a thin-walled portion continuing smoothly in the circumferential direction on the inner peripheral surface, a ring groove coming full circle on the outer peripheral surface of the larger cylindrical portion is formed. Since shrinkage at the thick-walled portion can be prevented by the ring groove, and the ring groove is formed smoothly over the entire thick-walled portion and the thin-walled portion, there exists no varying point at which a stress generated when fastening with a fastening member suddenly changes.

Abstract: A power transmission system which facilitates positioning of gaskets to ensure their sealing performance. The power transmission system includes a constant velocity universal joint provided with an inner ring having a plurality of track grooves formed on its outer periphery and an outer ring having a plurality of track grooves formed on its inner periphery. The inner ring is disposed on the side of the inner periphery of the outer ring, wherein balls are accommodated within ball tracks formed with the track grooves of the inner and outer rings and retained by a cage.

Abstract: A flexible bellows, such as for protecting the end of a longitudinally movable steering rack, has a hollow connector mounted on it adjacent its larger diameter fixing collar. The connector enables a connection to be made from the interior of the bellows through a similar connector on a second bellows covering the opposite end of the rack and thus to the interior of the second bellows. As the rack moves to and fro, compressing one bellows and expanding the other, the increased pressure in the compressed bellows is automatically transferred to the expanded bellows. The connector is pre-produced, such as from relatively rigid material by a moulding operation, and then placed in the mould which is used for producing the bellows. A parison or preform of thermoplastics material is placed in the mould and then blown to form the bellows.

Abstract: A protection arrangement for a joint (1), especially a double universal joint driving or in drives of agricultural devices and self-propelled implements, has a tube-like first protection element (12) with a first axial end (13) and a second axial end. At least the first axial end (13) is open. An attachment portion (16) is on the first axial end (13). The first protection element (12) is supported on a first component (4) of the joint (1). A second plastic protection element (17) is formed as a hollow body. The second protection element is open at both ends with an axially open first end portion (18) and an axially open second end portion (19). An envelope portion (20, 120, 220) is formed between the first and second open end portions (18,19). The envelope portion (20, 120, 220) has a lattice structure. The first end portion (18) is connectable to the attachment portion (16) of the first protection element (12).

Abstract: A process for forming the ball and socket joint with bellows seal (10), a bellows seal (10) and a ball and socket joint with bellows seal (10) is provided including a ball pivot pin (36, 38) with a connection piece (40). The sealing bellows is provided with an annular engagement surface (16) with a cavity (20). The connection piece with a sealing face is connected to the ball pivot pin. Lubricant (22) is disposed in the cavity prior to assembly of the ball and socket joint. The annular engagement surface (16) is provided in contact with the sealing face upon assembly to cause an amount of lubricant (22) to be squeezed out of the cavity (20).

Abstract: A protective cover which is generally in the form of a flexible bellows construction secured at each end by collars in order to define an interior space includes vent means. Thus, when the cover is deformed, the volume within the interior is altered by aspiration or evacuation through the vent means. The vent means includes a vent element in order to allow air or fluid transfer into and out of the interior but prevent ingress of contaminants such as grit and water to the interior.

Abstract: A joint sealing boot comprises a first end affixable to a shaft, and a second end affixable to a boot cover, the second end having a sealing area including at least one sealing bead for sealing the joint and preventing grease egress and contamination ingress.

Abstract: A sealing boot intended to ensure the sealing of a transmission joint connecting two shafts. The sealing boot includes a boot body having a bead at each end to contact and seal the periphery of the shaft or an element of the joint integral with the shaft. Each bead includes a radial outer shoulder forming a transition between the bead and the boot body, and a bearing surface extending from the shoulder and adapted to receive an element for fixing the bead against the shaft or associated joint element. The bearing surface is extended without an increase in its external diameter as far as the end of the bead. The shoulder forms a stop for longitudinal positioning during the mounting of the fixing element.

Abstract: The invention relates to a tripod joint assembly, suited for the driveline of motor vehicles. It includes an outer joint part, rollers and an inner joint part which is connected to a shaft in a rotationally fast way, with an annular gap being formed between the shaft and the outer joint part, as well as a convoluted boot for sealing the annular gap. The outer joint part comprises a wall whose outer contour, in cross-section, deviates from the circular shape and which comprises a radially outwardly directed, circumferentially extending bead. The convoluted boot comprises an adapter ring and a convoluted portion connected to the adapter ring, with the adapter ring, on its radial inside, comprising an annular circumferential recess and, in its cross-section, being suitable for being fitted on to the outer joint part. When the adapter ring is fitted on to the outer joint part, the bead of the outer joint part engages the circumferential recess of the adapter ring in order to provide axial security.

Abstract: A protective bellows formed by injection (blow) moulding has a large-diameter end with a fixing collar (28) for sealingly embracing an externally tri-lobed surface of a housing of an articulation joint for a motor vehicle transmission. The fixing collar (28) comprises a circumferential outer surface 29 and an inner surface (30). The inner surface (30) is made up of part-circumferentially curved surface portions (30A, 30B, 30C) for engaging the three lobes of the housing, and three equi-angularly spaced inwardly curved integral surface portions (32A, 32B, 32C) which are shaped to engage the spaces or grooves between the three lobes on the housing. The resilient material between the outer surface (29) and each inwardly curved surface portion (32A, 32B, 32C) is formed with several slots (34) arranged with their depths directed in a radial direction. The slots (34) aid the de-moulding process.

Abstract: An Automatic Transmission Input Drum Support Ring and Method is disclosed. Also disclosed is a support ring that is installable on the input drum of a conventional General Motors 700R4 automatic transmission in order to prevent overtorque-related cracking of this component. The device is configured to permit the transmission oiling/piston system to function as originally designed. The method for reinforcing a conventional transmission involves the installation of the support ring without the need for substantial modification of the conventional transmission.

Abstract: A boot for a universal joint is constructed by a boot body and a boot adapter. The one end of the boot is fitted on a propeller inner shaft via its one-end fitting portion and the other end of the boot is fitted on the outer race of the universal joint via its other-end fitting portion, thereby substantially covering the universal joint. The foregoing one-end fitting portion has an annular lip portion at its end portion. Passages for flowing air are formed on the one-end fitting portion and its annular lip portion, respectively. The passages communicate with each other through an annular partial passage between both passages. The existence of the annular partial passage increases the flowing resistance of air between the inside and the outside of the boot to reduce the pressure fluctuation in the boot and to improve the effectiveness in preventing splashed water or muddy water from intruding into the boot along with the suction of air.

Abstract: A constant velocity joint vent for use in a constant velocity joint of an automotive vehicle. The constant velocity joint vent includes a body generally having a cylindrical shape. The constant velocity joint vent also includes a first axial channel on an inside surface of the body. A semi circumferential channel is in communication with the first axial channel on one end thereof also on the inside surface of the body. A second axial channel in communication with the semi circumferential channel on another end thereof. The vent also includes a diaphragm in communication with the second axial channel and the outer atmosphere. The vent will operate such that high pressure and high temperature gases are vented to the outer atmosphere while any contaminants or water are repelled from entering the constant velocity joint chamber.

Abstract: In a boot including a larger cylindrical portion having a thick-walled portion and a thin-walled portion continuing smoothly in the circumferential direction on the inner peripheral surface, a ring groove coming full circle on the outer peripheral surface of the larger cylindrical portion is formed.

Abstract: Boot systems and boot attachment methods are provided to protect a double-tube vehicle driveshaft from premature wear or corrosion. One boot system comprises a boot portion having annular folds, opposite ends, and collar portions. The collar portions adjoin the boot portion at its opposite ends. At least one of the collar portions has a splined portion. The boot system may be utilized in a driveshaft comprising first and second members having splined portions. The second member of such a driveshaft is telescopically resident within the first member, and the splined portion of the first member cooperates with the splined portion of the second member. The boot attachment method involves sliding the boot over at least a part of the first and second members of the driveshaft, and securing the first and second collar portions to the respective first and second members.

Abstract: Ring-shaped ridges (23, 24) that extends in the circumferential direction and is capable of falling toward a bellows portion (12) when a larger cylindrical portion (11) comes into press contact therewith are formed on the outer peripheral surface of the bushing (2). Since the ring-shaped ridges (23, 24) fall toward the bellows portion (12) when being tightened, when a pressure is exerted from grease, the pressure acts in the direction of restoring the ring-shaped ridge (23) to the original posture. Therefore, the ring-shaped ridge (23) serves as a dam and is brought into press contact with the larger cylindrical portion (11) at a high bearing pressure.

Abstract: A shaft for a vehicle including a first member having an internal spline and defining an inner cavity, a second member having an external spline, and a boot mounted over the vent and adapted to substantially prevent contaminants from entering the inner cavity through the vent. The external spline of the first member and the internal spline of the second member cooperatively allow an axial sliding movement of the second member into the inner cavity of the first member and substantially prevents rotational movement between the first and second members. One of the first and second members defines a vent communicating with the inner cavity. The first and second members and the boot cooperatively form a substantially airtight enclosure.

Abstract: When forcibly mounting a fixture attached with a joint boot on an outer circumferential surface of an outer cup, a thick-walled section is pressed between an inclined surface of the outer cup and an annular stepped section of the fixture. Accordingly, the thick-walled section is elastically deformed and in close contact with the inclined surface for effecting sealing function.

Abstract: A seal adaptor assembly for use in a stroking universal joint of the type having an outer drive housing member having an exterior wall of non-uniform dimension including spaces between the parts of the housing enclosing the drive channels. The seal adaptor assembly includes an annular body and a plurality of insert having greater rigidity than the material of the annular body and wherein the inserts are located in the annular body at sections thereof that are located within outer housing spaces between the drive channels. The inserts are supported within the annular body at thin wall sections thereof and thereby provide for a more uniform compression of a resilient seal member between the housing and a clamp for holding the resilient seal member in place on the housing.

Abstract: An improved dust boot accommodates a ball and socket joint subject to high articulation under harsh environmental conditions of moisture and corrosive contaminants. The improved boot is capable of accommodating articulation of an associated ball stud up to 60 degrees from the rotational center of the joint, as well as twisting motions of the stud of at least 45 degrees. The dust boot includes multiple undulations that feature a series of convolutions or deep folds. In one example, the boot contains at least one undulation that includes two pairs of radially extending ribs so as to present a fully convoluted bulbous loop, complete with reverse bends to maximize amount of material available for stretching when the stud is articulated to high angles. The bulbous loop not only provides for up to 60 degrees of stud articulation but also provides at least 45 degrees of twisting motion without potential deleterious effects.

Abstract: A driving wheel bearing unit is disclosed which facilitates works including mounting and dismounting to/from a car body. The driving wheel bearing unit is set to satisfy Da≧Db, where Da is the diameter of its external member across a fitting surface thereof to be fitted to a mating member such as a knuckle, and Db is the maximum diameter of its constant velocity joint, so that a mounting bolt fixing the external member can be released to allow unitary extraction of the entire wheel bearing unit and the external member.

Abstract: In a joint boot made of resin comprising a small-diameter cylinder part, a large-diameter cylinder part and a bellows part interlinking both and molded by injection blow molding, the small-diameter cylinder part constituting an injection molding section, the production of a burr at a boundary between the injection molding section and a blow molding section will be suppressed. To that end, the boundary at an outer periphery of the boot between the injection molding section and the blow molding section is set on a bellows part side away from a recess for fixation of the small-diameter cylinder part. In particular, a shoulder portion of the recess for fixation on the bellows part side is provided with a cutout portion, in which to set the boundary between the injection and the blow molding sections.

Abstract: A convoluted boot assembly, especially for sealing a constant velocity joint (11) which comprises part of a joint assembly with a stationary component (27) for a motor vehicle and an outer part (13) with an attaching journal (14), an inner part (15) as well as elements (16) for transmitting torque between the inner part (15) and the outer part (13). The convoluted boot assembly comprises a convoluted boot (32) with a first collar (41) for being arranged at the connecting journal (14), with a second collar (43) for being secured to the stationary component (27), as well as a wall which connects the two collars (41, 43) and extends over the constant velocity joint (11). Furthermore, the convoluted boot 32 comprises a bearing assembly (38) for rotatably supporting the convoluted boot 32 at the attaching journal (14), as well as a seal (39) for sealing the convoluted boot (32) relative to the attaching journal (14).

Abstract: A convoluted boot assembly particularly suited for sealing a sideshaft connected to a constant velocity joint and arranged at the axle drive of a motor vehicle, relative to the housing of the axle drive. The convoluted boot assembly includes a convoluted boot (21) which includes a first collar (22) to be secured relative to the shaft (41), a second collar (23) to be connected to the housing (51) and a boot region (24) which connects the two collars (22, 23) and serves to offset the angular movements of the shaft. The assembly also includes a protective cap (31) which is secured to the first collar (22) and which encloses the boot region (24) of the convoluted boot (21) at least substantially in the direction pointing to the second collar (23), and a bearing assembly (11) for supporting the convoluted boot (21) on the shaft (41), as well as a seal (16) for sealing the first collar (22) relative to the shaft (41).

Abstract: A barrier for use in a constant velocity joint wherein the constant velocity joint has a lubricant within an outer race and a boot secured to a boot cover. The barrier includes a shield wherein that shield is in contact with the outer race and the boot cover. The shield generally has a body with a cup shaped cross section and a circumferential flange extending therefrom. The shield provides a barrier between the boot and the heat and grease lubricant of the constant velocity joint.

Abstract: A slip yoke assembly for a vehicle drive train assembly includes a yoke shaft having an externally splined shaft portion and a slip shaft having a hollow internally splined portion disposed co-axially about the shaft portion of the yoke shaft. The yoke shaft and the slip shaft are axially movable with respect to each other and are engaged with each other for transmitting torque from one to the other. A flexible boot is provided for protectively covering the connection between the two splined members. The boot has a first clamping end disposed about the yoke shaft and a second clamping end disposed about the slip shaft. The first clamping end has a plurality of loops spaced circumferentially about the first clamping end. The loops are shaped to receive a band clamp and to retain the band clamp in position with respect to the first clamping end. The second clamping end has a plurality of loops spaced circumferentially about the second clamping end.

Abstract: An apparatus (10) includes a tie rod (151) for a vehicle steering system. The tie rod (151) has an axis (159), a first cylindrical portion (251) with a first outer surface (261) of a first diameter (271), and a second cylindrical portion (252) coaxial with the first cylindrical portion (251). The second cylindrical portion (252) has a second outer surface (262) of a second diameter (272) smaller than the first diameter (271). The tie rod (151) has a ring portion (281) projecting radially from the second outer surface (262) of the second cylindrical portion (252). The ring portion (281) has a third outer surface (362) extending axially along the second cylindrical portion (252). A boot seal (32) encircles the second cylindrical portion (252). The boot seal (32) has a sealing surface (325) in sealing contact with the third outer surface (362) of the ring portion (281). The sealing surface (325) defines a groove (327) in the boot seal (32). The ring portion (281) is located in the groove (327).

Abstract: The invention concerns a bellows (7) designed to be coupled by a front end region (30) to a first rotary member (8) and by a rear end region (34) to a second rotary member (6). The bellows rear end region (34) is provided, over at least part of its periphery whereof the axial curve has a transverse contour with inflection points, a radially projecting lug (36) designed to be housed in a groove (20) of the second rotary member to retain axially the bellows rear end region (34) relative to the second rotary member (6), and sealing means designed to be supported on the second rotary member. The sealing means are axially located on the same side as at least part of the lug (36) retaining the bellows rear end region (34). The invention is applicable to tripod constant velocity universal joints.

Abstract: Ring-shaped ridges (23, 24) that extends in the circumferential direction and is capable of falling toward a bellows portion (12) when a larger cylindrical portion (11) comes into press contact therewith are formed on the outer peripheral surface of the bushing (2). Since the ring-shaped ridges (23, 24) fall toward the bellows portion (12) when being tightened, when a pressure is exerted from grease, the pressure acts in the direction of restoring the ring-shaped ridge (23) to the original posture. Therefore, the ring-shaped ridge (23) serves as a dam and is brought into press contact with the larger cylindrical portion (11) at a high bearing pressure.

Abstract: A steering column slider shaft assembly includes a shaft and yoke assembly having yoke at a first end and an attached non-cylindrical shaft extending therefrom to a second end. The second end is engaged with a non-cylindrical tube which forms a second end of a tube and yoke assembly, the tube being congruent with and adapted to slidably receive the shaft and provide a slip fit therefor. The shaft and yoke assembly and the tube and yoke assembly each have interengaging provisions which are over-molded or otherwise attached, for sealing the slider shaft assembly. The interengaging provisions also serve to limit extension of the slider assembly to resist inadvertent separation of the slider shaft assembly during assembly of the steering column.

Abstract: The invention relates to an improved dust cover a ball and socket joint. The dust cover includes an elongated sleeved body portion and a hinged portion. The sleeved body portion is constructed of a flexible, elastomeric material and is sized such that the sleeved body portion must be stretched over a joint housing to frictionally engage an exterior side wall of the joint housing without requiring any additional fasteners. The hinged portion includes a sealing lip that seals around a shank of a ball stud and a plurality of hinges that provide additional surface material for the dust cover for increased flexibility. The dust cover includes at least three hinges, a first upper hinge, a second upper hinge and a lower hinge positioned therebetween. The first upper hinge is offset from the second upper hinge such that the first upper hinge is positioned higher than the second upper hinge.

Abstract: An axle module for use in an automotive vehicle. The axle module includes a housing and a shaft rotatably supported within that housing. The axle module also includes a ring gear connected to the shaft. The axle module also includes a clutch pack housing engaged with an end of shaft while a side shaft joint is arranged within the clutch pack housing. The side shaft joint is connected to a side shaft which is further connected to a wheel of the automotive vehicle. A plurality of plates extend from the clutch pack housing and from the side shaft joint such that they overlap in an alternating manner with one another. The axle module also includes a motor which is used to control the transfer of an axial torque through the clutch pack housing and plurality of plates.

Abstract: The invention relates to an arrangement for covering a shaft-type mechanism and/or a joint-type connection of two shafts or a steering gear, comprising a bellows-type element (10). Said bellows-type element (10) has a collar-type essentially ring-shaped section (14) at each end, with an open clamping, pressing or shrink ring (20) or a so-called open hose clamp located thereon. Said hose clamp is pre-stressed in the direction of the centre in such a way that the two open ends (22, 24) mutually overlap each other and the ring or the clamp is automatically held tight on the respective section.

Abstract: A constant velocity joint boot includes a bellowed portion and the first crest portion of the bellowed portion is formed to have the same outer diameter as the first cylindrical portion, and the length of the membrane extending from the first crest portion through the second root portion to the second crest portion is set to be almost the same as that extending from the second crest portion through the third root portion to the third crest portion, and the depth of the second root portion h and the depth of the third root portion H satisfy a relational expression H/1.3≦h≦H/1.1.

Abstract: A joint boot for protecting a joint part of a power transmission system, in particular a joint boot for improving the durability by reducing a local stress concentration. The joint boot comprises a cylindrical bellows part, and annular mounting parts formed at both ends of the bellows part, a ridge portion and a bottom portion of said bellows part being formed in a continuous spiral shape.

Abstract: This transmission joint comprises a first and a second rotary member, a boot (7) connected by a front end region to the first rotary member and by a rear end region (33) to the second rotary member (6), and means for axially retaining the rear end region of the boot with respect to the second rotary member which comprise a retaining enlargement (20) and a groove (38) for housing the retaining enlargement, the rear end region (33) of the boot and the second rotary member having matching transverse outlines of which the directrix curves exhibit points of inflection. The enlargement is situated on the periphery of the second rotary member and spaced axially from the front end (22) of the second rotary member, and the groove (38) is formed on the periphery of the boot.

Abstract: A flexible boot assembly for protectively covering a constant velocity joint includes a flexible boot having an end portion that is molded about a flange portion of a rigid can. The flexible boot is preferably formed from an elastomeric material and can be integrally molded to a metallic can by an insert molding or other similar process. The metallic can includes a hollow cylindrical flange portion for positioning the can with respect to the constant velocity joint. The metallic can also includes a face portion having a plurality of apertures formed therethrough for mounting the boot assembly to the constant velocity joint. The inner surface of the metallic can includes a bead of a sealing material or a gasket for sealingly engaging the boot assembly to the adjacent face of the constant velocity joint. In another embodiment, the entire boot assembly is formed by using elastomeric material. In alternative embodiments, the entire boot assembly is formed from an elastomeric material.