Abstract: An assembly for connecting two drive sides of a drive train of a rail vehicle includes a first drive side having a disc-shaped first coupling body at one end, a second drive side having a disc-shaped second coupling body at one end and a disc-shaped intermediate body disposed between the first coupling body and the second coupling body. The intermediate body is coupled to both the first coupling body and the second coupling body in such a way that a rotational movement of one of the two drive sides is transmitted to the other drive side through the coupled body.

Abstract: A coupling member to couple a first shaft with a second shaft. The coupling member may include a flat member having a set of holes positioned along its circumference. The set of holes may include a first sub-set of holes coinciding with holes associated with the first shaft and a second sub-set of holes coinciding with holes associated with the second shaft. Each of the first shaft and the second shaft may include a plurality of rib segments, each rib segment having a hole. The coupling member may be configured to couple with the first shaft via the first sub-set of holes and the plurality of holes associated with the first shaft. The coupling member may be further configured to couple with the second shaft via the second sub-set of holes and the plurality of holes associated with the second shaft.

Abstract: A system includes an electric machine and a hydraulic unit. The electric machine includes a first shaft. The hydraulic unit includes a second shaft and a leakage oil chamber. The first shaft and the second shaft are connected to one another to form the shaft-hub connection. The shaft-hub connection has a central recess and is connected fluidically to the interior of the hydraulic unit for lubrication. The central recess adjoins at least one transverse channel. The at least one transverse channel extends from the central recess to an external circumference of the shaft-hub connection.

Abstract: A drive shaft (1) includes a telescopic shaft (3) having an outer tubular shaft (9) and an inner tubular shaft (11) inserted slidable into the outer shaft (9). A lubrication system is further provided, including: a lubricant receiving chamber (39) housed in the inner shaft (11); a lubricant distribution block (41) housed in the inner shaft (11); lubricant supply ports (11.9) for supplying lubricant from the lubricant distribution block (41), through a tubular wall of the inner shaft (11), towards a gap between the inner shaft (11) and the outer shaft (9); at least a lubricant transferring duct (47.1; 47.2) from the receiving chamber (39) to the distribution block (41). wherein the supplying ports (11.9) are distributed in at least two positions offset in direction of the axis (A-A) of the telescopic shaft (3).

Abstract: A hybrid module shaft assembly includes a rotational axis, a housing with a tubular portion, a shaft extending through the tubular portion, a first seal, a first ball bearing, and a plain bearing. The tubular portion has a first distal end arranged on an engine side of the housing, and a second distal end arranged on a transmission side of the housing. The first seal is arranged to seal the shaft to the first distal end, and the first ball bearing is disposed on the engine side adjacent to the first seal to position the shaft in the tubular portion. The plain bearing is arranged at the second distal end to position the shaft.

Abstract: A dielectric insulating assembly arranged to be positioned between a drive shaft and a driven shaft of a motorised drive assembly. The assembly includes dielectric insulation between the drive shaft and the driven shaft and plurality of electrically non-conductive fastener elements configured to connect the drive shaft to the driven shaft and the dielectric insulation therebetween, in torque transfer engagement, the fasteners located around an outer boundary of the dielectric insulation.

Abstract: During operation of a wet-running gearbox, vapours and/or air can arise in a housing of the gearbox, which can increase an internal pressure in the housing and thus can influence the operating safety of the gearbox. The problem addressed by the invention is that of creating a gearing unit, which is distinguished by an advantageous arrangement of a venting device. To this end, a gearing unit 1 for a drive assembly is specified having: a gearing device 4 for converting a drive torque of the drive assembly, the gearing device 4 having an input shaft 8, and the input shaft 8 defining a main axis H; a gearing housing 2 for accommodating the gearing device 4, the gearing housing 2 defining an accommodation space 3 for the gearing device 4; and a venting device 10 for venting the accommodation space 3, the venting device 10 being mounted on the gearing housing 2, wherein the venting device 10 is arranged coaxially with the main axis H and on an axial end face of the input shaft 8.

Abstract: A compressor includes: a shell forming an outer portion thereof and having lower part in which an oil pan is formed to store oil; a motor provided in the shell; a compression unit provided in the shell to compress a working gas when being driven by the motor; a frame fixed to the shell and supporting the compression unit; a shaft supported by the frame, connecting the motor and the compression unit, provided to transmit a turning force of the motor to the compression unit, and including an oil passage; and an oil pump provided at lower part of the shaft to draw oil from the pan and supply the oil into the oil passage. The pump includes a bypass valve that is opened, when a pressure of oil flowing in the oil passage is higher than a threshold pressure, to return part of the oil to the pan.

Abstract: A steering mechanism of an all-terrain vehicle includes: a steering shaft; a power steering system; and an adjusting mechanism including a ball joint, a first connecting shaft and a second connecting shaft. The first connecting shaft has a first end provided with a first ball groove, the second connecting shaft has a first end provided with a second ball groove, and the first ball groove and the second ball groove each accommodate a partial structure of the ball joint, such that the first connecting shaft and the second connecting shaft are rotatably coupled by the ball joint; and a second end of the first connecting shaft away from the first ball groove is coupled to the steering shaft, and a second end of the second connecting shaft away from the second ball groove is coupled to the power steering system. An all-terrain vehicle is also disclosed.

Abstract: An aircraft engine, has: a shaft rotatable about a central axis and engaged at an end thereof to a rotatable load via splines; a reference tube extending around the shaft and having a first end secured to the shaft and a second end free relative to the shaft for measuring a deformation of the shaft, the reference tube defining at least one tube aperture; an oil nozzle defining an exit flow axis intersecting the at least one tube aperture, the shaft defining at least one shaft aperture through the shaft, an oil flow path extending from the oil nozzle to the splines; and a drain outlet located radially outwardly of an inlet of the at least one shaft aperture for outputting excess oil out of an annular gap defined between the shaft and the reference tube.

Abstract: A gas turbine engine, has: a shaft rotatable about a central axis and engaged at an end thereof to a rotatable load via a spline; a reference tube circumferentially extending around the shaft, the reference tube secured at a first end to the shaft for rotation therewith and a second end free relative to the shaft for measuring a deformation of the shaft, the reference tube defining at least one tube aperture therethrough; an oil nozzle fluidly connected to a source of lubricant, the oil nozzle defining an exit flow axis intersecting the at least one tube aperture for injecting oil through the reference tube, the shaft defining at least one shaft aperture extending therethrough, the oil nozzle aligned with the spline via the at least one tube aperture and the at least one shaft aperture.

Abstract: An in-case oil passage extending in an axial direction above a plurality of gears is formed inside an outer peripheral wall portion of the accommodating case. The in-case oil passage includes an in-case oil passage opening portion which opens from the cover wall portion to the one end side in the axial direction. The cover wall portion is provided with an oil guide member at a position where at least a part of the cover wall portion overlaps the in-case oil passage opening portion when viewed from the one end side in the axial direction, the oil guide member guiding oil discharged from the in-case oil passage opening portion to the oil collecting portion of the oil collecting pocket.

Abstract: A torsional vibration damper whose vibration damping performance will not be reduced in a high speed range. In the torsional vibration damper, a planetary gear is oscillated within a first oscillating range when a torsional torque is smaller than a reference torque, and within a second oscillating range when the torsional torque is greater than the reference torque. Each backlash between the pinion gear and at least one of a sun gear and a ring gear within the second oscillating range is individually wider than each backlash between the pinion gear and the sun gear and each backlash between the pinion gear and the ring gear within the first oscillating range.

Abstract: A power transmission device includes a quill shaft having a first end and a second end, a first shaft engaged with the first end of the quill shaft, and a second shaft engaged with the second end of the quill shaft. An ejector orifice is provided at the second end of the quill shaft distal from the first shaft such that the ejector orifice forms an oblique angle with respect to the quill shaft, and the ejector orifice is adapted to eject a fluid therethrough.

Abstract: In a drive device, a pump includes a pump room in a housing, a suction port through which oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes an inner lid that holds a bearing journaling a motor shaft and covers one side in an axial direction of a stator, an outer lid that is attached to one side in the axial direction of the inner lid and covers one side in the axial direction of the motor shaft, and a suction oil passage connecting a lower region in a vertical direction in an accommodation portion and the suction port. At least a portion of the suction oil passage is between the inner lid and the outer lid. The inner lid includes an opening penetrating the inner lid and connecting the lower region in the vertical direction and a portion of the suction oil passage between the inner lid and the outer lid. The strainer is provided in the opening.

Abstract: A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil and accommodate the rotor and the stator, a pump driven through a motor shaft, and a valve in the housing. The pump includes a pump room in the housing, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes a first oil passage connected to the discharge port and a branch oil passage that is connected to the first oil passage and is open to an inside of the accommodation portion on an upper side in a vertical direction of the stator. The motor shaft includes a second oil passage located in the motor shaft and connected to the first oil passage and a first through-hole connecting the second oil passage and an outer circumferential surface of the motor shaft.

Abstract: The invention relates to a method for preparing lignin derivative-based lubricating greases thickened by a polyurea thickener, lubricating greases thus prepared, and the use of such lubricant greases, inter alia, in transmissions, constant-velocity driveshafts and sealed roller bearings.

Abstract: A method of assembling a flexible shaft drive transmission (4701) coupled between a drive motor and a power operated tool including the steps of: providing a drive transmitting shaft assembly (4800) including a flexible, elongated flex shaft (4702); providing an outer casing assembly (4702) including an outer casing (4704) defining a longitudinally extending throughbore and having a motor end (4710) and a tool end (4780); sliding a lock sleeve (4750) onto the motor end of the outer casing to a recessed position with respect to the motor end of the casing; inserting the motor end of the flex shaft through the tool end of the outer casing; affixing a driven fitting (4814) to the motor end of the flex shaft; advancing the lock sleeve to overlie the motor end of casing; and affixing a casing portion (4762) of the lock sleeve to the outer casing.

Abstract: A device to provide a seal between a housing for a moving element such as a drill chain, piston or the like and the moving element. The device comprising a storage well to retain seal material, the block having an outlet connecting with an aperture in a housing enabling seal material to flow into the space between a housing and the moving element and form a seal, the device further including an inlet port enabling seal material precursor to be added into the block, and pressurizing means to pressurize the seal material precursor and force it out of the aperture.

Abstract: The invention relates to a cable assembly. Specifically, the cable assembly includes a segment having a first cable and a second cable. The first cable defines an inner channel. The second has a non-circular cross-sectional shape and is slidably disposed in the inner channel. The non-circular cross-sectional shape of the second cable may improve the frictional coefficient between the first cable and the second cable.

Abstract: The retractor system for use in spinal surgery and other types of surgical procedures that is a simple and efficient solution for minimally invasive access to thoracolumbar spine is disclosed. The fully customizable design allows the surgeon to independently angle the retractor blades and expand the retractor in both cephalad-caudal and medial-lateral directions. With an offering of a range of blade lengths, access can be tailored to the patient's anatomy. The retractor system provides versatility and control ensuring minimal tissue trauma.

Abstract: The invention relates to a gear wheel pump with two meshing gear wheels which are rotatably mounted within a pump housing by means of a driven driveshaft and a crankshaft journal and which form a pumping channel system between a pump inlet and a pump outlet. Several gaps are formed between the pump housing, the gear wheels, the driveshaft, and the crankshaft journal. One of the gaps between the driveshaft and one of the gear wheels contains means for the rotationally fixed connection of the driveshaft to the gear wheel. In order to prevent leakages penetrating to the connecting means, according to the invention the gap between the driveshaft and the gear wheel is sealed, with respect to the front faces of the gear wheel, by means of a sealant.

Abstract: A guide groove including a groove section extending from the vicinity of an entrance of a main passage to a side opposite the entrance is formed on the inner circumferential surface of a main passage. The groove section is provided in an inclined fashion with respect to the axial direction such that lubricating oil inside the groove section is sent towards the side opposite the entrance by rotation of a rotary shaft in a predetermined direction. Of a plurality of subsidiary passages, the entrance of a subsidiary passage that is most distant from the entrance of a main passage is disposed in the guide groove. In a lubrication structure for a transmission, insufficient lubrication is effectively prevented in parts requiring lubrication corresponding to the subsidiary passages, irrespective of the positions of the subsidiary passages in the axial direction, while avoiding increase in the size of the transmission.

Abstract: A transmission for a vehicle and a shaft assembly for transferring a fluid in the transmission of the vehicle are disclosed. The shaft assembly includes an input member rotatable about a longitudinal axis. The input member defines a cavity along the longitudinal axis. The shaft assembly further includes a shaft rotatable about the longitudinal axis and extending to a first end facing the input member. The shaft and the input member are spaced from each other along the longitudinal axis to define a gap therebetween. The shaft assembly also includes a cap attached to the shaft, with the cap extending through the gap into the cavity of the input member. The cap defines an aperture in fluid communication with the cavity for delivering the fluid from the shaft to the cavity of the input member.

Abstract: In the case of a shaft arrangement having a shaft (7) which extends within a casing (1) filled with a fluid and which can be actuated by means of a drive (8) from outwith the casing (1), the shaft (7) having on its outer peripheral surface a surface structure which conveys the fluid in a flow direction (30) in the longitudinal direction of the shaft during rotation, a sleeve (19) is provided according to the invention, which can rotate with the shaft and has at least one conveying element (20) for conveying the fluid in a counterflow direction opposite to the flow direction. As a result, a bubble-free conveyance of the fluid along the shaft (7) is facilitated.

Abstract: A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder. The first radial shoulder and the second radial shoulder each include at least one slot. An axial separation between the first radial shoulder and the second radial shoulder defines an axial distance SA along an axis of rotation. The at least one slot defines a lowermost radial dimension SR from the axis of rotation. A ratio of SR/SA is 0.25-0.77.

Abstract: A spindle has first, second and third portions, each portion having interior and exterior surfaces, the third portion having an interiorly facing interior spindle face. A cylindrical sleeve bearing has an exterior surface in the first portion and an interior surface rotatably receiving an axle. A knuckle has an exteriorly facing exterior knuckle face positioned in contact with the interior spindle face. The knuckle has an interior knuckle face and an aperture for the passage of the axle. A lubrication assembly is formed of a channel extending through the knuckle and the spindle and the bearing sleeve and includes a lubrication fitting. The invention also includes a lubrication method.

Abstract: A power transmitting component with a housing, a shaft and a seal. The housing has a wall member, a shaft bore, and a shield wall. The shaft bore is formed through the wall member. The shield wall is coupled to and extends outwardly from the wall member. The shield wall is formed about the shaft bore and defines a drain spout. The shaft is received through the shaft bore. The seal is received in the shaft bore and sealingly engages the housing and the shaft. The drain spout is configured to drain liquid from a space that is radially inward of the shield wall when the power transmitting component is disposed in a predetermined orientation.

Abstract: A shaft coupling is disclosed herein. The shaft coupling includes a tubular portion extending along a central axis. The tubular portion has a maximum inner diameter. The shaft coupling also includes a first set of internal splines positioned in the tubular portion. The shaft coupling also includes a dam rising above the maximum inner diameter in the tubular portion. The dam is spaced from the first set of internal splines along the central axis. The shaft coupling also includes at least one aperture for receiving lubricant for the first set of internal splines. The at least one aperture extends through the tubular portion along an aperture axis transverse to the central axis. A cross-sectional area of the at least one aperture decreases along at least part of the aperture axis. In another feature, the shaft coupling can include a passageway extending through the dam.

Abstract: A shaft, including an outer peripheral surface; an inner peripheral surface; an oil flow passage that is formed in the shaft and is defined by the inner peripheral surface; a large inner-diameter portion having a first inner diameter; a small inner-diameter portion adjoining the large inner-diameter portion in one direction along an axial direction of the shaft, and having a second inner diameter smaller than the first inner diameter; and a through hole extending from an inner peripheral surface of the large inner-diameter portion to the outer peripheral surface of the shaft. The small inner-diameter portion is formed by bending radially inward an extending portion, which extends in the one direction from the large inner-diameter portion.

Abstract: A concentric cylinder drive assembly (1) used for the transmission of power in industrial machinery is disclosed. More specifically, a concentric drive assembly (1) with a hollow outer cylinder (5) having an internal surface with a bi-directional surface lay; an inner cylinder (3) having an external surface with a unidirectional surface lay oriented at a predetermined angle (?) along the length of the cylinder; an annular channel established between the outer and inner cylinders having a predetermined gap (7); and a lubrication oil that substantially fills the annular channel is presented.

Abstract: The present invention provides a compensator assembly for use in a motorcycle. The compensator assembly includes an input member, and an output member driven by the input member through a torque-buffering interface. The compensator assembly also includes one or more lubrication passageways formed therein extending between a distal end and one or more interfaces to provide lubricant thereto.

Abstract: A shaft arrangement having a shaft and at least one component, which is arranged on the shaft and which is to be lubricated and/or cooled by a fluid. A fluid feed device being designed to feed the fluid to the shaft arrangement radially from outside. The component is a shaft sealing ring, which rests on the shaft and which is fixed to a housing. A baffle plate, which with the shaft sealing ring defines a fluid baffle chamber and which is separated by an annular gap from the outer circumference of the shaft, is arranged axially next to the shaft sealing ring. The fluid feed device is arranged so that fluid is fed into the fluid baffle chamber.

Abstract: The present invention provides a lubrication system that improves the force of retaining a lubricating component of a foamed lubricant, is capable of minimizing the amount of exudation of the lubricating component which occurs owing to deformation of the foamed lubricant, is capable of compensating for a lubricating function even when the lubricating component exudes insufficiently from the foamed lubricant, and is capable of complying with a demand that the lubrication system has a long life and can be produced at a low cost. The lubrication system comprises a foamed lubricant containing a lubricating component in a resin thereof which foams, hardens, and becomes porous and a grease for auxiliary lubrication which is present together with the foamed lubricant in a portion to be lubricated.

Abstract: A shaft arrangement for a transmission comprises a shaft having an axial bore connected to an oil supply system, at least one loose wheel rotatably supported on the shaft via a bearing, and a shift clutch arrangement which connects the loose wheel for rotation with the shaft. The shift clutch arrangement comprises a guide sleeve connected for rotation with the shaft via a tooth engagement. The axial bore supplies oil to the bearing and shift clutch arrangement via a transversal bore in an area of the tooth engagement between the guide sleeve and the shaft. A channel in at least one of an area of a toothing of the guide sleeve and an area of the toothing of the shaft, which, together with the guide sleeve toothing, forms the tooth engagement connects the transversal bore with an area between the guide sleeve and the bearing.

Abstract: A method for retaining lubrication in a splined joint comprises the steps of forming a seal between an inward surface of a grease seal cup and a first component, forming another seal between an outward surface of the grease seal cup and a sealing member extending from a second component, and engaging an end portion of the grease seal cup with an end portion of the first component, so that the end portion of the grease seal cup resists axial displacement of the grease seal cup during engagement of the first component with the second component. The grease seal cup of the method has a cylindrical portion integral with the end portion. The cylindrical portion has a tapered annular wall with the inward and outward surfaces. The end portion of the grease seal cup extends radially and inwardly from the cylindrical portion, so that the tapered annular wall is squeezed between the first component and the sealing member.

Abstract: A drive unit for motor vehicles which has at least one electrical motor and at least one transmission assembly. The electrical motor and the transmission assembly are operatively connected to one another by at least one shaft and the shaft is rotatably mounted by at least one first rolling bearing which sits in a rotary union for the shaft in the transmission assembly.

Abstract: A lubrication management system for a rotating shaft assembly includes a shaft rotatable about a central axis and in operable connection with at least one component, wherein lubrication is supplied proximate an outer diameter of the shaft. Also included is a lubrication manipulation device for directing the lubrication radially away from the outer diameter of the shaft, wherein the lubrication manipulation device comprises a threaded portion for fixedly securing the lubrication manipulation device to the outer diameter of the shaft.

Abstract: A flexible shaft drive transmission coupled between a drive motor and a gear train of a power operated tool. The flexible shaft drive transmission includes: an outer casing having a bushing positioned at a tool end of the casing, the bushing defining a longitudinal central opening; lubricant disposed within the outer casing; and an elongated drive transmitting shaft assembly rotatable within the outer casing including a flexible drive transmitting and a coupler fitting affixed to the tool end of the drive transmitting shaft, the coupler fitting including a cylindrical body and an enlarged head extending distally from the cylindrical body, the cylindrical body fitting within the longitudinal central opening of the bushing and the enlarged head having a diameter greater than a diameter of the longitudinal central opening of the bushing. The enlarged head defining a square drive aligned with a central longitudinal axis of the drive transmitting shaft assembly.

Abstract: An Elastic Coupling (1) has a pair of bodies (2,3) that can rotate about a common axis and are mutually associated by a plurality of springs (7). Each spring has an end associated with the other body; the ends of the springs are associated with the bodies by floating engagement means (8). The floating engagement means arc provided by mating spherical surfaces between the spring and the seats (6) and allows to recover the misalignment cased by the variation of the distance between the seats, limiting the stresses and allowing the spring to work exclusively in an axial direction, without warping, contrary to conventional spring couplings, wherein the springs are inserted in simple cylindrical seats and must necessarily warp.

Abstract: A torsional vibration damper for operation in an oil bath comprising an input flange for connecting to a drive motor, an output flange for connecting to a transmission, and a bow spring for the torsionally elastic coupling of the input flange to the output flange, where the bow spring is in contact radially on the outside with an encircling holding device that is formed on one of the flanges. At the same time, the holding device has an opening in the area of the bow spring, in order to enable a flow of oil through an area of contact of the bow spring with the holding device.

Abstract: A flat blade for a transmission input shaft includes a substantially rectangular body portion for insertion in a center bore of the input shaft and at least one radial blade segment extending from the body portion. The radial blade segment is arranged for assembly proximate a distal end of the input shaft and for extending radially beyond the center bore. In an example embodiment, the radial blade segment is substantially rectangular in shape. In an example embodiment, the radial blade segment is a pair of radial blade segments extending in opposing directions. In an example embodiment, the body portion is arranged for press-fitting into the center bore.

Abstract: A system for lubricating a remote bearing in rotating machinery is disclosed. An aerator is coupled on an end of a shaft distally from a gearbox and on a far side of an obstruction coupled to the shaft. Oil is carried centrifugally along an inner diameter wall of the shaft while air is carried along a central axis of the shaft. The aerator may include an axial groove for receiving oil from the inner diameter wall of the shaft. The aerator may further include a radial passage for carrying air into the oil to provide a misted lubricant that may be provided into the remote bearing.

Abstract: The invention provides a grease composition for constant velocity joint containing the components (a) to (g) below and a constant velocity joint containing said composition. (a) a diurea thickening agent having the following formula (1): R1NH—CO—NH—C6H4-p-CH2—C6H4-p-NH—CO—NHR2 ??(1) wherein R1 and R2 may be the same or different and represent C8-C20 alkyl groups, (b) an ester synthetic oil, (c) a mineral oil and/or a synthetic hydrocarbon oil, (d) a molybdenum dialkyldithiocarbamate, (e) molybdenum disulfide, (f) a polytetrafluoroethylene, and (g) a zinc dithiophosphate compound. The grease composition of the invention reduces variations in rotational resistance of the constant velocity joint at a low temperature.

Abstract: A shaft arrangement for a transmission comprises a shaft having an axial bore connected to an oil supply system, at least one loose wheel rotatably supported on the shaft via a bearing, and a shift clutch arrangement which connects the loose wheel for rotation with the shaft. The shift clutch arrangement comprises a guide sleeve connected for rotation with the shaft via a tooth engagement. The axial bore supplies oil to the bearing and shift clutch arrangement via a transversal bore in an area of the tooth engagement between the guide sleeve and the shaft. A channel in at least one of an area of a toothing of the guide sleeve and an area of the toothing of the shaft, which, together with the guide sleeve toothing, forms the tooth engagement connects the transversal bore with an area between the guide sleeve and the bearing.

Abstract: An example journal pin includes a generally cylindrical body disposed on an axis having a supply passage. A first chamber and a second chamber are disposed in the generally cylindrical body and are in fluid communication with the supply passage. A recess on an outer diameter of the cylindrical body is in fluid communication with the first chamber and the second chamber. The first chamber and second chamber are each radially outward of the supply passage and including an outlet to the recess. The first chamber and second chamber each have a first section radially inward of a second section. A cross sectional area of the second section is greater than a cross sectional area of the corresponding first section.

Abstract: A torque-transfer assembly includes a fluid transfer tube located within a bore of a shaft. The fluid transfer tube seals to the shaft and includes at least one fluid groove that communicates between a plurality of fluid ports located in the shaft. The fluid groove is defined by an outer surface of the fluid transfer tube.

Abstract: A wheel support apparatus including a hub wheel which includes a hub shaft and is to mount a wheel thereon, a first side surface spline being formed on an end surface of the hub shaft, and a constant velocity joint which includes an outer ring connected to the hub shaft in a torque-transmitting manner, a second side surface spline meshed with the first side surface spline being formed on an end surface of a side wall portion of the outer ring abutting against the end surface of the hub shaft. Each of the first and second side surface splines includes a number of spline teeth and bottom lands defined between the spline teeth. The tooth tops of the spline teeth of one of the two side splines and the bottom lands of the other side spline are formed into a tapering surface inclined relative to a plane perpendicular to a center axis of the hub shaft. The tapering tooth tops contact the corresponding tapering bottom lands so that the hub shaft and the outer ring can be aligned with each other.

Abstract: A system and method for lubricating a key shaft in a compaction machine is disclosed. The compaction machine may include a spline oil cavity and a key shaft in fluid communication with the spline oil cavity. The key shaft may include an axial splined portion and a helical splined portion on an outer surface thereof, a longitudinal lubricating passage extending through a substantial length of the key shaft and a plurality of additional lubricating passages intersecting the longitudinal lubricating passage. The system and method may additionally include lubricating the axial splined portion and the helical splined portion of the key shaft with the lubricating oil drawn from the spline oil cavity.

Abstract: A rotary joint for use in directional control of a subterranean rotary steerable drilling apparatus. The rotary joint is formed by mated spherical-shaped sockets, each of which is connected with a hollow rod. By virtue of this arrangement, a continuous passageway is provided for fluid to flow through the rotary joint, which fluid may be used for cooling the rotary joint during operation of the rotary steerable drilling system.