Abstract: A hydrodynamic converter has a working chamber through which an operating medium can flow. A pump wheel is connected to a drive shaft and a turbine wheel is connected to a driven shaft. At least one positioning blade can be adjusted by an adjustment device. In order to provide a compactly formed and robust hydrodynamic converter of this type, having a hard-wearing adjustment device for adjusting at least one positioning vane, the adjustment device includes an actuating drive with ring elements. Each ring element is disposed coaxially in relation to the drive shaft. A first ring element is connected to the at least one positioning blade for transmitting a positioning force or a positioning torque via a diverting device. The first ring element can be rotated relative to a second ring element in the circumferential direction of the drive shaft.

Abstract: Respective outer peripheral surfaces (33, 35) of opening-side end portions (30, 31) of a front cover (12) and a pump shell (7), which have been shaped by pressing, are formed by slimming such that the outside diameters of the slimmed outer peripheral surfaces are equal to each other. With the opening-side end portions abutting against each other, a high-energy beam such as a laser beam (R) is radiated toward the abutment surfaces (30, 31) from the radially outer side to weld the abutment surfaces to each other. Consequently, it is possible to perform welding accurately through easy processing in order to easily manufacture a fluid coupling with high precision that facilitates post-processing.

Abstract: A torque converter includes a lock-up device that directly connects a torque converter cover that rotates together with a pump impeller to a turbine runner connected to an output axis. The lock-up device includes a damper spring in a clutch piston that contacts with or moves away from the torque converter cover. In addition, an intermediate member is provided inside the damper spring. A center part of the damper spring is projected toward the inner side of the clutch piston in the radial direction by damper pressing portions and fixed to both ends of the damper spring and a connecting member and pushed onto the projecting part of the intermediate member.

Abstract: A motor vehicle drive train, comprising a drive engine including a drive shaft and generating an exhaust stream; a power turbine configured to convert exhaust energy into drive power and capable to drive the drive shaft or an assembly downstream of the driveshaft in the drive power flow with drive power of the drive turbine; a hydrodynamic retarder including a driven bladed primary wheel and a bladed secondary wheel that is stationary or driven in the opposite direction of the primary wheel, the primary wheel and the secondary wheel forming a working chamber that can be filled with a working medium capable of braking the primary wheel hydrodynamically by torque transmission from the primary wheel to the secondary wheel by way of a working medium circuit; and a mechanical disconnect clutch capable of disengaging the power turbine and the primary wheel of the hydrodynamic retarder from the drive power flow.

Abstract: A power transmission device includes a hydrodynamic converter. The blading of the pump wheel and/or turbine wheels includes at least one adjusting blade which can be actuated by an adjusting device, and/or at least one multi-element blade having at least one adjustable blade segment.

Abstract: A moving range measurement device of a side gear used in a differential unit, the differential unit including: a differential case; a side gear arranged inside the differential case; and a spring that biases the side gear in a direction parallel to a central axis, in which: the device includes: a jig in which a slope is formed, the jig being slidable in a direction vertical to the central axis of the side gear; and an actuator that slides the jig, and the actuator slides the jig to make the jig move toward the side gear in a state in which the slope is in contact with the side gear, to thereby move the side gear along the slope.

Abstract: In a transmission device, a flange portion includes: first outer peripheral portion fitted and welded to inner peripheral portion of ring gear; second outer peripheral portion small in diameter and adjacent to the first outer peripheral portion via first connecting surface; and third outer peripheral portion smaller in diameter and adjacent to the second outer peripheral portion on the opposite side from the first outer peripheral portion via second connecting surface. The ring gear includes space forming portion defining, between it and the flange portion, space faced by inner end of welded portion and extending radially inward and outward of the welded portion. Side surface of the stopper portion abuts against the second connecting surface, the stopper portion being formed in the ring gear and having inner peripheral surface press-fitted to the third outer peripheral portion.

Abstract: A planet gear for an integrated drive generator (IDG) includes a planet gear body having an outer diametric surface provided with 15 gear teeth.

Abstract: A sun gear for an integrated drive generator (IDG) includes a sun gear body having an outer diametric edge and an inner diametric wall. The outer diametric edge includes 33 gear teeth.

Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.

Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.

Abstract: A Ravigneaux planetary gear device includes a long pinion gear and a short pinion gear. A tooth of each of the long pinion gear and the short pinion gear has an end surface with curvature from an inner circumference side toward an outer circumference side of each of the long pinion gear and the short pinion gear and toward a center in a tooth width direction.

Abstract: Torsional vibration dampers (TVDs) having a plurality of spokes designed to withstand both torsional and bending forces and vibrations are disclosed. The spokes, which connect a central member to a peripheral rim, include a first end coupled to an outer radial surface of the central member; a second end coupled to an inner radial surface of the rim; and four concave surfaces extending between the first end and the second end. The concave surfaces may be concave from the first end to the second end and may also be concave laterally from front to back or side to side. A TVD having a hub with spokes having one or more concave surfaces is also disclosed herein. A method of designing the spokes for the hub is also disclosed.

Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.

Abstract: A transfer case for a normally rear wheel drive vehicle having selectively engageable front wheel drive is provided. The transfer case includes a rear housing with a main drive shaft aperture and an aluminum cast front housing threadably connected with the rear housing. The front housing has a main drive shaft aperture axially aligned with the rear housing main drive shaft aperture. The front housing has an integrally formed cylindrical yoke forming an isolation mount for receiving a polymeric isolator allowing for connection of the transfer case with a chassis structure of the vehicle. The cylindrical yoke has a cylindrical preform therein.

Abstract: A shaft-bearing subassembly (10) which includes at least one shaft (11) mounted by way of at least first and second roller bearings (13, 14). The first and second roller bearings (13, 14) are mounted on the at least one shaft (11) with an intermediate space between them. The first roller bearing (13) is fixed axially and the second roller bearing (14) is secured by way of a retaining element (16). The retaining element (16) is on the side of the second roller bearing (14) farthest away from the first roller bearing (13), and has a first contact surface (17) which limits the movement of an inner race (18) of the second roller bearing (14) in at least one direction, and a second contact surface (19) which is in contact with an abutment (20) on the shaft (11).

Abstract: An actuator includes a housing with a linear motor slider. A portion of the linear motor slider is positioned in the housing. A transfer plate is disposed on an end of the linear motor slider. A transfer plate chamber is positioned within the housing and is divided by the transfer plate into aft and forward chambers. An aft vent is disposed in the aft chamber and includes a first membrane positioned over the aft vent. A forward vent is disposed in the aft chamber and includes a second membrane positioned over the forward vent. The first and second membranes include at least one of a hydrophobic or oleophobic material.

Abstract: The present invention relates to a linear electro-mechanical actuator for transferring a rotational motion to a linear motion. The actuator includes a piston having an outer surface and being at least partly arranged inside a housing. The housing includes an inner load-carrying surface. The actuator provides a transmission module adapted to transfer a rotational motion generated by a motor to a linear motion of the piston. The actuator further provides a load-carrying member and a lubricating member having a porous polymeric matrix and a lubricating material, the load-carrying member and the lubricating member being arranged adjacent to each other. The present actuator allows for lubrication of at least a portion of the inner load-carrying surface of the housing by the lubricating material upon movement of the piston. For instance, the linear electro-mechanical actuator may not require, or may at least minimize, the need of relubrication.

Abstract: Disclosed is a speed reduction apparatus including: a casing that accommodates a speed reduction mechanism; an input shaft including a protruding portion protruding from the casing to the outside; a fan provided on the protruding portion of the input shaft; and a fan hood that covers the fan. The fan hood includes a cylindrical portion, and a trumpet-like portion that is connected to the cylindrical portion, and includes an inner surface inclined to be separated away from the input shaft toward a load side. A flow straightening fin is provided on an inner surface of the trumpet-like portion.

Abstract: A gear unit includes a housing, a trough for guiding oil and reducing losses due to splashing surrounding a circumferential section of a toothing part, particularly a gear wheel, especially in the radial and axial direction, the trough including at least three parts, e.g., at least one bottom plate and two side walls, the bottom plate being screw-connected to the two side walls, the trough being fastened to the housing, the trough having an opening, particularly a channel, especially at its lowest surface area, e.g., particularly at the surface area having the greatest radial distance, in particular, during rotational movement of the gear wheel, oil being conveyed from the oil pan of the gear unit through the opening between the trough and gear wheel, especially to a position higher than the level of the oil pan, the bottom plate and the side walls being stamped bent parts.

Abstract: A vehicle drive transfer apparatus including a planetary gear mechanism including a carrier for supporting a sun gear, a ring gear, and a plurality of pinion gears through pinion shafts and pinion bearings, wherein an in-shaft oil passage is provided in each of the pinion shafts to supply lubricating oil to each of the pinion bearings; and an oil receiver attached to the carrier to receive lubricating oil supplied from an oil supplier and lead the lubricating oil to the in-shaft oil passage in each of the pinion shafts.

Abstract: An oil pump plate for operatively coupling an oil pump within a gearbox casing is provided, which allows installing and/or uninstalling an in-line filter for the oil pump without having to modify the gearbox casing.

Abstract: A fluid arrangement including apparatus and a method for fluid actuation of at least one motor vehicle drive train component, such as a transmission or a clutch. The fluid arrangement has at least one fluid actuation system and a fluid energy source. The fluid energy source includes a fluid pump having a first fluid transport direction for actuating the motor vehicle component, and having a second fluid transport direction that is opposite the first fluid transport direction and in which second fluid transport direction the fluid pump provides a stream of fluid to cool the motor vehicle component.

Abstract: There are provided a ball screw that more efficiently prevents accumulation and scattering of extra grease in a nut and a seal used in the ball screw. In order to do that, in a ball screw, a grease reservoir portion is provided on an inner peripheral surface of a seal provided at at least one end of ends of a nut in a moving direction of the nut so as to form a space with respect to a screw shaft. The grease reservoir portion is open to an outer peripheral surface of the seal and communicates with slits formed on the outer peripheral surface of the seal.

Abstract: A power transfer device can include a housing, first and second input members, first and second output members, a differential, and a pump. The housing can define a sump. The first input member can receive rotational power and rotate about an axis. The second input member can be meshingly engaged with the first input member and can rotate through the sump. The differential case can be drivingly coupled to the second input member. The differential gearset can transmit rotary power between the differential case and the first and second output members. The pump can be disposed about the first input member and can have an inlet, outlet, and pump element. The inlet can be coupled for fluid communication with the sump. The pump element can be drivingly coupled to the first input member and can pump the fluid from the sump when the first input member rotates about the axis.

Abstract: A differential device includes pinion; pinion shaft; paired side gears connected to paired output shafts and having at outer peripheral portions gear portions meshing with the pinion; and oil introduction passage introducing lubricant oil to mutually-facing surfaces of the side gears. An oil reserving portion facing space adjacent to end surface of the pinion on radially inner side and capable of catching and holding lubricant oil splashed to the space is formed in portion where the pinion and the pinion shaft mutually face, so as to communicate with fitting portion between the pinion and the pinion shaft where they are relatively rotationally slidable. A step portion is formed in at least one of the mutually-facing surfaces, separates part of oil from lubricant flow flowing radially outward along the one surface by centrifugal force, and guides the oil into the space.

Abstract: In a differential device, outer end surface of pinion shaft faces inner space of transmission case. A bottomed hollow portion is formed in the pinion shaft such that at least part of the bottomed hollow portion is surrounded by rotation sliding portion between the pinion shaft and pinion, the bottomed hollow portion having one end opened in the outer end surface of the pinion shaft and the other end closed. An oil guiding hole is provided in peripheral wall of the bottomed hollow portion, the oil guiding hole being capable of guiding lubricant oil in the bottomed hollow portion to the rotation sliding portion using centrifugal force. The oil guiding hole is formed to cross the peripheral wall of the bottomed hollow portion from inner periphery to outer periphery of the peripheral wall while inclined outward in axial direction of pinion shaft.

Abstract: Differential case includes multiple oil intake holes being respectively at positions offset from intermediate point between two pinions adjacent peripherally in the case toward the pinions, the holes passing through outer peripheral wall of the case in inside-outside direction and being capable of taking lubricant oil into the case. The holes are formed such that as seen in projection plane orthogonal to rotation axis of the case, axes of the holes extending from inner to outer opening ends of the holes are inclined forward in rotational direction of the case when vehicle travels forward. As seen in the projection plane, the pinions are placed outside areas between first and second imaginary lines, the first imaginary lines joining the axis and one peripheral ends of the inner opening ends, the second imaginary lines joining the axis and the other peripheral ends thereof.

Abstract: A variator and methods for making the variator are disclosed. A method of making the variator includes forming a plurality of holes in a surface of a case that includes a flange, arranging a plurality of spheres in the case that are configured to be positioned between an input disc and an output disc circumferentially about a central axis so that the plurality of spheres are positioned radially inward of the flange, and positioning a plurality of fluid conduits in the plurality of holes.

Abstract: A ring gear for an integrated drive generator (IDG) includes a gear body including an outer diametric edge and an inner diametric wall. The outer diametric edge includes 129 gear teeth.

Abstract: The present disclosure provides a gear set. The gear set includes a ring gear including a plurality of ring gear teeth on an inner radial edge of the ring gear and an arcuate ring roller positioned axially outward of the ring gear teeth. The gear set includes a sun gear having a plurality of sun gear teeth positioned about an outer radial sun gear edge and an arcuate sun gear roller positioned axially outward of the sun gear teeth. The gear set includes a planetary gear positioned in the ring gear between the sun gear and the ring gear. The planetary gear includes a plurality of planetary gear teeth positioned about an outer radial planetary gear edge. The plurality of planetary gear teeth engage the sun gear teeth and the ring gear teeth. The planetary gear includes an arcuate planetary gear roller positioned axially outward of the planetary gear teeth. The arcuate planetary gear roller engages the arcuate ring roller and the arcuate sun gear roller.

Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.

Abstract: A planetary carrier where the second pinion gears are disposed so as to be at least partially located in the spaces between the adjacent bridge portions, an outer peripheral surface of each of the bridge portions is provided with a spline onto which a friction engagement plate constituting a friction engagement element is fitted, an inner peripheral surface of each of the bridge portions is provided with a pair of wall portions that extend in the axial direction along side edges on both sides of each of the bridge portions and protrude radially inward, and each of the bridge portions is provided with a plurality of oil holes through which an inside and an outside of each of the bridge portions communicate with each other.

Abstract: A gear shifter performs an abutment learning, having a reference value learner that sets a reference value of a position signal when abutting a drive object to a stopper, and reduces warpage by (i) an all phase power supply supplying to the electric current to all of the plural phase coils of the direct current motor, and (ii) by reducing an amount of the electric current supplied to the coils, and by decreasing a pressing force of the drive object pressing the drive object against the stopper. The reference value determined at a warpage diminish time enables a reduction of variation of the reference value due to an influence of the warpage, thereby setting a robust reference value to account for an environmental condition such as a temperature change, for an accurate shift operation of the gear shifter.

Abstract: A park shift assist mechanism of a shift lever assembly for a vehicle is provided. The park shift assist mechanism includes a pressing portion configured to apply a pressing force and a follower configured to cause rotation of a gear shift lever from a reverse position to a park position when the gear shift lever is positioned between the reverse position and the park position in response to the pressing force being applied to the follower.

Abstract: An apparatus for electronically controllable transmission is provided to shift gears by moving a shift lever and sensing the magnetic flux density of a magnet, which moves based on the rotation of the shift lever, using a three-dimensional (3D) hall sensor. The apparatus includes a shift lever having one end connected to a magnet and shifting gears by moving the shift lever and a shift lever body connected to the shift lever and allows the shift lever to move around shift axis or select axis. A sensor unit is mounted fixedly intersecting the shift axis and select axis within the shift lever body and senses the movement of the magnet around an X-axis, a Y-axis and a Z-axis as the magnet moves. The sensor unit is mounted at a tilted angle to provide at least two of three output signals with linearity.

Abstract: A power transmission device that includes a transmission including a plurality of engagement elements for transmitting power from a motor to axles; a case to accommodate the transmission; a hydraulic control device to control hydraulic pressure to the engagement elements; a hydraulic oil reservoir that stores hydraulic oil; and a first pump that is operated by the power from the motor and that suctions the hydraulic oil from the hydraulic oil reservoir through a strainer and supplies the hydraulic oil to the hydraulic control device.

Abstract: A twin-clutch transmission that can always effectively reduce gear shift shock and a collision sound even under the existence of variation attributed to component tolerance and change over the ages attributed to wear. A twin-clutch transmission calculates a rotational speed difference (|Na?Nb|) between an odd-stage main shaft rotational speed (Na) and an even-stage main shaft rotational speed (Nb) and learns synchronization start gear shift drive displacement (?s) detected by a gear shift drive displacement detecting unit at the timing at which the rotational speed difference (|Na?Nb|) reaches a predetermined synchronization start determination rotational speed difference (Ds) from gear shift start. The twin-clutch transmission controls an actuator on the basis of the learned synchronization start gear shift drive displacement (?s).

Abstract: A system including a current module, a second module, and a temperature module. The current module is configured to determine an amount of current drawn from a power source by a hydraulic pump of a transmission based on a current signal received from a current sensor. The current signal is indicative of the current drawn by the hydraulic pump. The second module is configured to determine (i) a speed of the hydraulic pump based on a speed signal received from a speed sensor, or (ii) an output torque of the hydraulic pump based on the amount of current drawn by the hydraulic pump. The speed signal is indicative of the speed of the hydraulic pump. The temperature module is configured to estimate a temperature of a hydraulic fluid circulated by the hydraulic pump based on (i) the amount of current drawn by the hydraulic pump, and (ii) the speed or the output torque of the hydraulic pump. The second module is configured to adjust the speed of the hydraulic pump based on the temperature of the hydraulic fluid.

Abstract: A hydraulic control device that includes two hydraulic oil chambers, wherein a predetermined engagement element of the engagement elements is an engagement element that includes the two hydraulic oil chambers and is engageable and disengageable when an engagement pressure is supplied to and discharged from at least one of the two hydraulic oil chambers, and a control unit that reduces supply of the engagement pressure to one of the two hydraulic oil chambers to a level lower than that in a state in which a first shift speed is established, when the control unit performs shifting from the state in which the first shift speed is established by supplying the engagement pressures to both of the two hydraulic oil chambers and engaging the predetermined engagement element to a second shift speed by switching engagement and disengagement states of engagement elements other than the predetermined engagement element.

Abstract: A transmission apparatus for a vehicle includes a shift spindle having a clutch actuator, and also includes a shift actuator adapted to operate a shift drum. The apparatus also includes a motor for rotating the shift spindle, and a controller for controlling the motor. In use, the clutch actuator is rotated prior to the shift actuator when the shift spindle is rotated to a shift-down side. The controller rotates the shift spindle to a shift-up side and stores, as a standard duty, a driving duty of the motor at the time when a rotary angle of the shift drum reaches a drum angle threshold. Then, the controller rotates the shift spindle to a shift-down side, and learns a rotary angle of the shift spindle at the time when the standard duty is generated, as a touch point at which the clutch is initially partially engaged.

Abstract: In a control apparatus for a continuously variable transmission that is installed in a vehicle and comprises a continuously variable transmission mechanism, a speed ratio of the continuously variable transmission mechanism being modified by modifying a winding radius of a belt sandwiched between pulleys in accordance with an oil pressure supplied to hydraulic cylinders provided on the pulleys, the control apparatus comprises an oil pressure supply unit that supplies a working oil at a predetermined oil pressure, a flow rate control unit that controls a flow rate at which the working oil supplied by the oil pressure supply unit is supplied to the hydraulic cylinder, and flow rate setting part that sets a target oil pressure to be supplied to the hydraulic cylinder, and sets a flow rate at which the working oil is to be caused to flow through the flow rate control unit in order to achieve the target oil pressure.

Abstract: A belt-type continuously variable transmission is equipped with a belt wrapped around across a primary pulley and a secondary pulley, and a CVT control unit for controlling pulley hydraulic pressures to the primary pulley and the secondary pulley. The CVT control unit determines whether an operating state is a driving state where the direction of an input torque inputted to the belt-type continuously variable transmission is from a driving source or a coasting state where the input torque direction is from drive road wheels. The pulley hydraulic pressure for the input torque for when it is determined that the operating state is the coasting state is set higher than the pulley hydraulic pressure for the input torque for when it is determined that the operating state is the driving state, thereby suppressing a slippage of the belt.

Abstract: In a control apparatus for a continuously variable transmission with a sub transmission, a primary solenoid valve (118) installed at an oil passage midway position from a mechanical oil pump (10) to a primary pulley (21) and configured to control a hydraulic pressure to the primary pulley (21) and a transmission controller (12) which outputs a primary current command value (PriSOL/I*) to primary solenoid valve (118) are provided. The transmission controller (12) outputs primary current command value (PriSOL/I*) which previously closes an oil passage from the mechanical oil pump (10) to the primary pulley (21) to the primary solenoid valve (118) before a rise in engine revolution number (Ne) due to at least a re-start of the engine, when a coast stop control/an idle stop control is carried out.

Abstract: A hydraulic control device is disposed forward of a case housing a speed change mechanism in an on-vehicle state. A detent lever is fixed to the control shaft, has a first end connected to a parking rod, and includes a detent recess with which a detent mechanism is engaged. A swing lever includes a shaft serving as a swing center, a first extension extending from one end of the shaft, and a second extension extending from the other end of the shaft. The first extension is connected to a second end of the detent lever. The second extension is connected to a manual valve. An axial position of the manual valve changes in accordance with a rotation angle of the control shaft.

Abstract: A cylinder-piston assembly includes a cylinder barrel having a first end and a second end. An end cap is coupled to the cylinder barrel at the first end having a cylindrical opening. A piston slidably disposed in the cylinder barrel has a piston rod connected to the piston. The piston rod passes through the cylindrical opening of the end cap. A spring is disposed circumferentially around the piston rod. A load cell disposed in the end cap is adapted to generate a signal indicative of the cylinder displacement based on a spring force exerted on the load cell during a movement of the piston in the cylinder barrel, wherein the load cell is pressure balanced to minimize effect of forces other than the spring force exerted on the load cell.

Abstract: A cylindrical seal apparatus according to one embodiment includes a split spring ring and a split seal ring supported in a groove for example defined in a piston. The split spring ring in a tensioning condition presses against a tapered annular inner surface of the split seal ring to create a radial pre-load and an axial pre-load to the slit seal ring to establish a primary sealing contact between the seal ring and a cylinder, and a second sealing condition between the seal ring and a lower-pressure side of the groove, before the working fluid pressure is built up.

Abstract: A spring seal for a joint assembly pivotally joining a lever arm to a machine frame includes an annular body having a W-shaped cross section. The W-shaped cross section includes a first cantilevered arm, a parallel and spaced apart second cantilevered arm, and a spring leg joining the first and second cantilevered arms. The spring seal is disposed between a bearing surface on the lever arm and a lug on the frame. The W-shaped cross section of the spring seal can collapse and relax to accommodate movement between the lever arm and the frame lug. A second spring seal can be disposed between a second bearing surface on the lever arm and a second frame lug opposite the first lug.

Abstract: A ring arrangement with a synthetic material sealing ring between an outer radial guiding ring and an inner radial guiding ring, wherein the outer guiding ring has a greater coefficient of thermal expansion than the inner guiding ring, so that an effective volume expansion coefficient of an annular gap between the guiding rings is greater than the volume expansion coefficient of the synthetic material of the synthetic material sealing ring. Through a large effective coefficient of thermal expansion for the annular gap volume, as achieved via different coefficients of expansion of the outer and inner guiding rings, fluctuation of the axial clamping forces of the synthetic material sealing ring can be limited.

Abstract: A multi-piece seal assembly for use in a torque converter of a motor vehicle includes an inner ring, an outer ring, and an elastomer compensation layer disposed between the inner ring and the outer ring. The inner and outer rings are made from a composite wear material. Tabs on the inner and outer ring interlock with matching slots on the elastomer compensation layer.