Abstract: In a cable connection structure in which a roughly spherical cable end disposed at the tip of an inner wire is connected to a movable member, the movable member is provided with a pair of wing pieces that hold the inner wire, a cable insertion opening that guides the cable end to a space between the wing pieces, and a roughly elliptical cable end passage part that displaceably supports the cable end. The long axis of the roughly elliptical shape of the cable end passage part roughly coincides with the direction of insertion of the cable.

Abstract: Draw-pull bar used for guidance and mechanical mount with a locking mechanism consisting of two locking elements, namely a securing clip with a locking nose shaped as partial ring that is arranged on the toothed ring of the tubular body of the draw-pull bar by means of swivel arm and in which the locking nose engages when the securing clip swivels to the toothed ring. A bar with a hinge is fitted to one side of the resilient partial ring. When using a locking element, the bar snaps into the other end of the partial ring in such a way that the partial ring is clamped tight and an unintentional turning or undoing of the two locking elements is prevented without previous opening of the bar.

Abstract: A retainer for fastening a pin in a pinned connection is disclosed. The retainer includes an annular first plate having a plurality of first mating features extending inwards from the annular first plate. The retainer also includes an annular compressible section adjacent the annular first plate. The annular compressible section may be coaxially aligned to the annular first plate. The retainer may also include an annular second plate adjacent the compressible section opposite the annular first plate. The annular second plate may be coaxially aligned to the annular first plate and the annular compressible section.

Abstract: In at least one illustrative embodiment, an adjustable joint comprises a housing, a pair of wedges arranged in the housing, and a threaded fastener engaged with at least one of the pair of wedges. The housing may include a first cavity that is sized to receive a spherical end of a shaft and a second cavity that is sized to receive a tube. The pair of wedges may be arranged between the first and the second cavities. The threaded fastener may be configured to (i) move the pair of wedges away from one another when rotated in a first direction and (ii) move the pair of wedges toward one another when rotated in a second direction opposite the first direction.

Abstract: A multiple-degree-of-freedom adjustment mechanism with precise linear motion has structural robustness and allows easy reduction in weight and size, simple production and easy operation. The multiple-degree-of-freedom adjustment mechanism includes: at least one support assembly; and a plate supported by the at least one support assembly, wherein the at least one support assembly includes: a bipod having a first rod and a second rod, one ends of which are fixed to each other at a top provided with a support section; and a linear motion arrangement having a first movable member and a second movable member which are fixed to the other ends of the first rod and the second rod respectively, wherein the first movable member and the second movable member independently move in a linear motion direction.

Abstract: A ratio W1/W2 of a circumferential width W1 of each of inclined hill portions G2 of a radial dynamic pressure generating portion G and a circumferential width W2 of each of inclined groove portions G3 is 1.2 or larger. And when an inner diameter of a bearing member is D, the circumferential width W2 of each of the inclined groove portions satisfies 0.2D?W2?0.4D.

Abstract: A ball ramp plate and a ball ramp assembly including the ball ramp plate are provided. The ball ramp plate comprises a stamped metal plate formed with ramped ball pockets on a first side at a ball ramp pitch radius and a thrust bearing support on a second side of the plate. The thrust bearing support has a first support surface at a first pitch radius greater than the ball ramp pitch radius and a second support surface at a second pitch radius less than the ball ramp pitch radius.

Abstract: A bearing ring for a rolling-element bearing includes a rolling-element raceway that is axially delimited by a guide flange and a retaining flange. At least the retaining flange is configured as a separate element that is fixedly connectable to the bearing ring, and the bearing ring includes a substantially radially extending stop that is offset inward from an axial end of the bearing towards the raceway.

Abstract: An aerostatic bearing includes a base having a foundation layer and a plurality of ventilation bodies protruding from the foundation layer, the ventilation bodies being made of a porous material; and a sealing layer covering the base and revealing at least one of the ventilation bodies.

Abstract: A guide body can be prevented from being disengaged from a track rail even where the track rail is made of a low-rigidity material, thereby securing reliable movement along the track rail. The guide body includes: a large number of rolling elements that roll on a rolling surface formed along a structure, the guide body being movable relative to the structure; an endless circulation path through which the large number of rolling elements circulate; a load opening portion for allowing the large number of rolling elements in the endless circulation path to be held in contact with the rolling surface of the structure; and a guide portion formed on at least one side of the load opening portion so as to project toward the structure side with respect to projecting ends of the large number of rolling elements projecting from the load opening portion toward the structure side.

Abstract: The magnetic bearings make use of magnet assemblies with a high magnetic field gradient. The magnet assemblies use two permanent magnets with opposite polarization in a Kittel open domain structure. The basic factor of magnetic separation is the magnetic force, which acts on a particle of the substance and which is proportional to the magnetic susceptibility of the substance, the value of the magnetic induction B and the value of the gradient ?B of the applied magnetic field. Therefore, increasing the sensitivity and selectivity of magnetic separation will require use of the highest possible values of magnetic induction B and magnetic field gradient ?B, or their united factor—the product B?B. The magnetic assembly have repulsive magnetic systems each having two juxtaposed permanent magnets 2, 4 with opposite magnetization in the form of a Kittel open domain structure.

Abstract: A magnetic bearing, adapted to equip a rotary apparatus. The magnetic bearing comprises: an actuator sub-assembly provided with a magnetic base and at least three actuator bobbins mounted on the magnetic base, and a sensor sub-assembly provided with at least three magnetic sensors associated with the actuator bobbins. At least one sub-assembly amidst the actuator sub-assembly and the sensor sub-assembly comprises at least three sectors mounted together. Each sector includes at least one actuator bobbin when the sector belongs to the actuator sub-assembly, or at least one magnetic sensor when the sector belongs to the sensor sub-assembly. The invention also concerns a rotary apparatus comprising such a magnetic bearing and a method for manufacturing such a magnetic bearing.

Abstract: A magnetic bearing, comprising: a magnetic base; at least three actuator bobbins mounted on the magnetic base; and magnetic sensors associated with the actuator bobbins. At least one magnetic system amidst the magnetic actuators and the magnetic sensors comprises together: a coil holder; a coil wound up around the coil holder; and a connector device integrated to the coil holder and designed for plugging at least one wire. Additionally disclosed is an apparatus comprising such a magnetic bearing and a method for manufacturing such a magnetic bearing.

Abstract: Aspects of the disclosure can relate to an apparatus including a first member having a first bearing surface formed from a hard material (e.g., a diamond-based material, such as a polycrystalline diamond material), and a second member coupled to an input shaft to translate (e.g., rotate, slide, etc.) with respect to the first member. The second member has a second bearing surface formed from a hard material, and the second bearing surface is to bear against the first bearing surface. In embodiments of the disclosure, the first and second members can be for devices including, but not necessarily limited to: solenoids, generators and/or motors (e.g., out-runner radial flux generators, axial flux generators, radial flux generators/motors, roller vane motors, etc.), gearboxes, rotary data swivels, digital actuators, filters (e.g., inner rotating filters), valves (e.g., proportional valves), sensors (e.g., pressure differential sensors), and so forth.

Abstract: A bearing assembly includes a support ring, a plurality of bearing-element carrier members coupled to the support ring, and a plurality of superhard bearing elements having a lateral periphery extending between a base and a superhard bearing surface. At least one superhard bearing element of the plurality of superhard bearing elements is attached to each of the plurality of bearing-element carrier members. A bearing apparatus includes a rotor, a stator, and a bearing assembly. A method for assembling a bearing assembly includes attaching at least one superhard bearing element to each of a plurality of bearing-element carrier members and coupling the plurality of bearing-element carrier members to a support ring.

Abstract: The invention relates to a sliding bearing element (1) with a running layer (4) made from a first tin-based alloy and an additional layer (5) made from an additional tin-based alloy, said alloys containing at least one element from a group comprising Cu, Ni, Ag, Sb, As, Pb, Bi, Te, Tl and/or non-metal particles. The first tin-based alloy has a strength index FI of at least 5 and at most 25, and the additional tin-based alloy has a strength index FI of at least 0.3 and at most 3.

Abstract: A rolling bearing includes a cage formed by coupling a first and a second division pieces into which the cage is divided in an axial direction. At least the first division piece is provided with a protruding portion extending in an axial direction toward the second division piece and having a locking portion formed at a tip of the protruding portion with the locking portion protruding toward a radially outer side. The second division piece is provided with a locked recessed portion in which the locking portion is locked. On an inner peripheral surface of the first division piece, an avoiding recessed portion is formed which allows avoidance of interference of the inner peripheral surface of the first division piece with an inner ring when the first division piece is tilted toward a radially inner side in order to lock the locking portion in the locked recessed portion.

Abstract: A roller bearing cage includes a cylindrical body including a plurality of pocket holes defined within and positioned circumferentially about the cylindrical body. At least a portion of the cylindrical body is hollow. The roller bearing cage further includes a reinforcement structure extending within the portion of the cylindrical body. The reinforcement structure is configured to provide a stiffening force to the cylindrical body.

Abstract: A bearing apparatus includes a bearing portion having an outer ring, an inner ring, a plurality of balls interposed between the outer ring and the inner ring, and a cage that holds the balls, and a lubrication unit provided adjacently to the bearing portion in an axial direction thereof to feed lubricant to a lubrication area that needs to be lubricated. The lubrication unit has a tank that stores the lubricant, and a pump that ejects the lubricant toward the lubrication area. The pump has an ejection port that is open toward the lubrication area and through which the lubricant is ejected at a predetermined initial velocity in the form of a 0.5 to 1,000 picoliter oil droplet.

Abstract: A bearing providing a first ring and a second ring, capable of rotating concentrically relative to one another, equipped with at least one incorporated device for detecting the movement of the rings relative to one another is provided. The detection device includes at least a coder element mounted on the first ring and at least a sensor element mounted on the second ring, facing the coder element, the coder element providing at least one linear ribbon arranged on a cylindrical surface of the first ring. The first ring of the bearing is equipped with at least one retaining strip that extends over the ribbon.

Abstract: A mechanical connection includes first and second components supported for rotation, the first component formed with first spline teeth, the second component formed with second spline teeth meshing with the first spline teeth, and a damper fitted in a groove formed in one of the first and second components, including an extension secured to the damper, contacting and extending between at least some of the first and second spline teeth.

Abstract: A composite material torque disc which comprises a support layer, and a reinforcing fiber secured to the support layer, the support layer being embedded within a polymer matrix material.

Abstract: A lock-up device for a torque converter transmits a torque from a front cover to a transmission-side member through a turbine. The lock-up device includes a clutch portion, a piston, a support member, and a synchronization mechanism. The clutch portion is disposed between the front cover and the turbine. The piston is movable in an axial direction. The piston turns the clutch portion into a torque transmission state. The support member supports the piston such that the piston is movable. The support member defines an oil chamber together with the piston. The oil chamber is supplied a hydraulic oil for activating the piston. The synchronization mechanism causes the piston to rotate in synchronization with the support member.

Abstract: A clutch comprising a pump is disclosed. The pump is operatively connected to the clutch such that a clutch slip event will cause the pump to delivery fluid from a fluid source to a region surrounding the friction plates of the clutch. The operation of the pump manages heat that is generated by the dynamic friction of the slipping clutch plates. The pump and associated fluid delivery methods are removably securable to an upstream end of an input shaft of the clutch. This allows the pump and associated fluid delivery methods to be used as modular components, that are easy to remove and replace for maintenance purposes, it also allows easier access to the internals of the clutch for maintenance.

Abstract: A bearing forming a clutching-declutching bearing for a motor vehicle, the bearing defining a central axis and including an outer ring free to rotate around the central axis, an inner ring, rolling elements disposed between the outer ring and inner ring and a flange mounted on the inner ring. The flange is at least partially inserted in a recess which is provided in a radial end portion of the inner ring and which is distinct from an inner bore of the inner ring.

Abstract: When a control unit starts to supply power to an electromagnetic coil in a first direction, a magnetic force generated by a non-attracting magnetic circuit becomes larger than a magnetic attraction force generated by an attracting magnetic circuit. As a result, a movable member is guided by a guide portion of a yoke and moves to a second position from a first position. When the control unit starts to supply power to an electromagnetic coil in a second direction, the magnetic attraction force generated by the attracting magnetic circuit becomes larger than the magnetic force generated by the non-attracting magnetic circuit. As a result, the movable member is guided by the guide portion and moves to the first position from the second position. Accordingly, the movable member can reliably perform a moving operation when turning ON/OFF.

Abstract: A liquid cooled viscous fan clutch transfers torque from a driving plate driven by an engine crankshaft to a driven plate connected to a cooling fan. Heat generated in a working fluid is transferred to a second fluid, such as engine coolant or transmission fluid, flowing through a cooling jacket. The cooling jacket is located in a stationary housing which may be fixed to the engine. The working fluid circulates through a working zone, a passageway in the stationary housing, and a passageway in the driving plate. Rotation of the driving plate provides the motive force to circulate the fluid, independent of the rotation speed of the driven plate. A controllable valve may be closed to block circulation, trapping working fluid in a reservoir, to disengage the clutch.

Abstract: A Sprague carrier for use in a front differential is provided. The Sprague carrier includes an armature plate having a plurality of concentrically located connector apertures. The Sprague carrier also includes a spring-less bearing cage. The spring-less bearing cage includes bearing apertures, bearings coupled within the bearing apertures without springs, and concentrically located connector recesses corresponding to the concentrically located connector apertures of the armature plate. The Sprague carrier further includes connectors engaging the connector apertures of the armature plate and the connector recesses of the bearing cage to couple the armature plate to the bearing cage.

Abstract: A clutch (1) with an inner ring (2) arranged about an axis of rotation (d) and an outer ring (3) arranged coaxially in reference thereto, as well as an elastic clamping ring (4) arranged between them and radially limited thereby, with the inner ring (2) and the clamping ring (4) resting on each other via a ramp device (9), arranged bi-directionally effective in the circumferential direction, and clamping segments (13) pointing radially outwardly and arranged distributed in the circumferential direction, form in case of a radial displacement of the clamping ring (4) forming with the outer ring (3) a clamping connection in at least one circumferential direction. In a further aspect, a radial displacement of the clamping ring (4) is provided via a ramp device (12) effective in the axial direction, switched by an axial displacement of the inner ring (2) in reference to the clamping ring (4).

Abstract: A selectable one-way clutch is provided. The selectable one-way clutch comprises a selector member rotated at a predetermined angle between an engagement position and a disengagement position, and an actuator that reciprocates linearly along a tangential line of the selector member to rotate the selector member to the engagement position and to the disengagement position. The actuator comprises an actuation member that is offset from the selector member in a direction along a rotational center axis of the selector member to actuate along the tangential line of the circumference of the selector member. The selectable one-way clutch further comprises an arm connecting the actuation member and the selector member to rotate the selector member by a linear motion of the actuation member.

Abstract: A method for controlling a dual clutch transmission (DCT) may include: determining, by a state determination unit, whether a clutch of the DCT is stuck; disabling, by a control unit, the clutch when it is determined that the clutch is stuck; controlling, by the control unit, the driving unit to control the disabled clutch through a reference operation; determining, by the state determination unit, whether the disabled clutch is normally operated, when a vehicle is stopped; and enabling, by the control unit, the clutch when it is determined that the disabled clutch is normally operated.

Abstract: A system for determining when a selectable one-way clutch has mechanically released includes an update timer identifying if each of a converter model engine torque, a transmission input torque, and a torque converter slip are positive for a predetermined period of time. An SOWC slip value is calculated using an output signal from each of: at least one transmission internal speed sensor producing an output signal representative of a speed of an internal component of a transmission; and at least one transmission output speed sensor producing an output signal representative of a speed of an output of the transmission. An SOWC released signal is issued if either all of the measured converter model engine torque, the measured transmission input torque, and the measured torque converter slip are positive for at least the predetermined period of time, or the calculated SOWC slip value is greater than a predetermined threshold.

Abstract: A brake caliper includes a lining unit and a hand-brake unit. The hand-brake unit includes a driving member, and first and second push members respectively abutting against an abutment portion and an urging portion of the driving member. The urging portion has an inclined urging surface. The second push member has an inclined abutment surface in slidable contact with the urging surface. When the driving member is rotated, the urging surface pushes the abutment surface to move the first and second push members toward each other for actuating the lining unit to frictionally contact a brake disk.

Abstract: An engagement device includes: a first member including a plurality of engaged teeth; a second member arranged coaxially with the first member, the second member including a plurality of engaging teeth; a rotation unit configured to relatively rotate the first member and the second member about an axis; a movement unit configured to relatively move the first member and the second member in an axial direction; and a control unit configured to control operations of the rotation unit and the movement unit, and the engaged teeth are formed on the first member at a side opposing the second member along a circumferential direction around the axis, and the engaging teeth are formed on the second member at a side opposing the first member along the circumferential direction around the axis.

Abstract: A brake lining for a railroad car has a frictional surface on a brake disc that is pressed by a brake caliper. Friction bodies are pressed against the frictional surface of the brake disc and a back plate is mounted to the caliper to support the friction bodies. Each of the friction bodies is formed with a friction material which contacts the brake disc frictional surface, and has a base plate attached on the back plate side of the friction material. The base plate has a protrusion formed on its back side. On the friction body side of the back plate there is formed a groove which contacts the protrusion formed on the base plate. A disc spring or a spherical-seated structure is disposed between the base plate of each friction body and the back plate. Friction bodies are prevented from rotating at their attached places, without adding new components.

Abstract: A brake disc structure contains: a central disc made of metal material or metal alloy material, a first disc and a second disc which are made of ferrous metal materials, and a through orifice passing through central positions of the first disc, the central disc, and the second disc. The first disc includes a first brake face and plural first holes, the second disc includes a second brake and plural second holes, and the central disc includes plural third holes, wherein each of the plural first and second holes has a first diameter and a second diameter less than the first diameter, and diameters of any two adjacent first and second holes are different. Furthermore, multiple heat dissipation portions of the central disc are defined by the plural third holes and the plural first holes or are defined by the plural third holes and the plural second holes.

Abstract: An electro-mechanical brake device may include: a driver configured to generate rotary power; a first gear connected to an output shaft of the driver, and the first gear configured to rotate with the output shaft; a second gear installed in a direction crossing the first gear, engaged with the first gear, and configured to rotate with the first gear; a third gear engaged with the second gear and configured to rotate with the second gear, the third gear having a rotating gear bar installed in parallel to the output shaft and configured to rotate with the output shaft; a moving nut engaged with the third gear and configured to move linearly; and a piston installed in a shape covering an outside of the moving nut, and pushed by the moving nut so as to pressurize a brake pad.

Abstract: An assembly includes a brake system comprising, a parking brake assembly including a first drive shaft and a second drive shaft. The assembly also includes two or more opposing brake pads, and a rotor extending between the two or more opposing brake pads. During use, the first drive shaft is moved so that a first portion of the brake pad is moved relative to the rotor, The second drive shaft is moved so that a second portion of the brake pad is moved relative to the rotor. One of the first portion of the brake pad or the second portion of the brake pad is moved relative to the rotor before the other of the first portion of the brake pad or the second portion of the brake pad is moved relative to the rotor.

Abstract: A spring (48) includes successively a portion (50) for fixing the spring to the disk brake, a rigid branch (B2) connected to the fixing portion (50) by a bend (P1) plastically deformable about a first deformation axis (A1), another rigid branch (B3) connected to the aforementioned rigid branch (B2) by a second plastically deformable bend (P2), and a further rigid branch (B4) connected to the aforementioned rigid branch (B3) by a third plastically deformable bend (P3) that cooperates directly or indirectly with an associated portion of the brake shoe, each rigid branch (B2, B3, B4) being a strip that lies in a plane parallel to the first deformation axis (A1).

Abstract: A vehicle brake system, including: an electric brake device including a friction member, a rotor, a motor, and a driven member; and a wear detector including a data obtaining section to obtain a forward movement amount of the driven member and a pressing force by which the driven member presses the friction member, a detecting section to detect a contact start position of the driven member, and an estimating section to estimate a remaining thickness of the friction member, wherein the wear detector includes an uneven-wear detecting section to detect uneven wear of the friction member, by comparing: a relationship between the forward movement amount and the pressing force; and a relationship therebetween in a case where it is supposed that a thickness of the friction member is equal to the remaining thickness that would be estimated in a state in which the friction member is evenly worn.

Abstract: A negative stiffness torsional spring. A plurality of spokes secured between a hub and an outer cylinder assembly are preloaded in compression. As the hub is rotated, the stiffness of the torsional spring is negative over a range of angles.

Abstract: A spring plate of a lens driving module is provided, including an outer frame, an inner frame, an inner string and a hollow. The outer frame is configured to connect with a fixed part of the lens driving module. The inner frame is configured to connect with a movable part of the lens driving module. The inner string is extended from the outer frame and the inner frame and connected therebetween. The hollow is disposed on the inner string for dispersing stress.

Abstract: A honeycomb structure having high levels of recoverable energy absorption is provided. The honeycomb structure achieves high levels of recoverable energy absorption by incorporating cells that exhibit negative stiffness. In one embodiment, the cells exhibit negative stiffness via curved beam members configured to snap through to a second position upon experiencing a sufficient force. The cells may also be configured to snap back to their original position when the force is removed. Therefore, the honeycomb structure may be capable of repeatedly achieving a high level of recoverable energy absorption.

Abstract: A load coupling device for a power train including: a rotatable shaft; a first flange on a first end of the shaft, wherein the first flange is adapted to couple to a first rotating shaft of at a torque producing turbine or a torque driven electrical generator; a second flange on an opposite end of the shaft, wherein the shaft is adapted to couple to a second rotating shaft of the other of the turbine and the generator, and an annular ring extending radially outward from the first flange, wherein the mass of the annular ring is selected to shift a torsional natural frequency of the power train away from an operational condition of the power train. Trim masses may be added to make fine adjustments to the torsional natural frequency of the power train.

Abstract: A hydraulic damping device includes a cylinder 11, a cylinder 12, a piston 30 that partitions a space in the cylinder 11, a piston rod 20 that is connected to the piston 30, a bottom valve 40 that separates the interior of the cylinder 11 from a reservoir chamber R and has a communication passage of a liquid between the interior of the cylinder 11 and the reservoir chamber R, and a check valve mechanism 50 that is disposed in a radial direction of an area where movement of the piston 30 in the cylinder 11 is restricted or an area extended axially on an outer side of the cylinder 11, and permits a flow in one direction between the interior of the cylinder 11 and the reservoir chamber R caused by the movement of the piston 30 and restricts the flow in the other direction.

Abstract: A damping valve includes an annular valve disc, the valve disc having an annular outer peripheral sheet that projects toward an axial direction of the valve disc, an inner peripheral sheet that is provided on an inside of the outer peripheral sheet and projects toward the axial direction, an annular window formed between the outer peripheral sheet and the inner peripheral sheet, and a port that communicates with the annular window. The damping valve comprises an annular leaf valve that is laminated on the valve disc and is seated/unseated on the outer peripheral sheet, an annular spacer that is interposed between the leaf valve and the inner peripheral sheet and sets an initial deflection amount of the leaf valve, and a positioning part that restricts positional deviation of the spacer in a radial direction relative to the valve disc.

Abstract: The damper assembly includes a tubular member, a rod, a primary piston, a secondary piston, and a resilient member. The tubular member includes a sidewall and a cap positioned at an end of the sidewall. The sidewall and the cap define an inner volume. The rod extends within the inner volume. The primary piston is positioned within the inner volume and coupled to the rod. The primary piston defines a first contact surface. The secondary piston includes a body member having a second contact surface, an opposing second surface, and an inner cylindrical face defining a central aperture that receives the rod. The secondary piston defines a channel extending from the inner cylindrical face to an outer periphery of the body member. The first contact surface and the channel are configured to cooperatively define a flow conduit upon engagement between the primary piston and the secondary piston.

Abstract: A partitioning member (16) of a vibration-damping device (10) is provided with a communication chamber (30), a first communication hole (31) and a second communication hole (32). The first communication hole (31) and the second communication hole (32) are arranged to be offset from each other in the axial direction (O). The first communication hole (31) is formed by the inside of a first protruding tube (31a) that protrudes into the communication chamber (30) from the first wall surface (30a). The second communication hole (32) is formed by the inside of the second protruding tube (32a) that protrudes into the communication chamber (30) from the second wall surface (30b). By including the configuration as described above, simplification of structure can be achieved.

Abstract: A damper device includes a dynamic damper that has third springs coupled to an intermediate member and that also has, as a mass body coupled to the third springs, a turbine runner and a coupling member etc. The third springs of the dynamic damper are disposed so as to overlap both in the axial and radial directions of the damper device second springs that have higher rigidity than first springs and that are disposed inward of the first springs to transfer torque between a drive member and a driven member.

Abstract: A lock-up device includes an output rotary member rotatable relatively to a clutch portion and coupled to a turbine. A plurality of torque transmission elastic members elastically and rotation-directionally couple the clutch portion and the output rotary member. An intermediate member rotatable relatively to the clutch portion and the output rotary member causes at least two of the plural torque transmission elastic members to act in a series-like manner. A dynamic damper device includes a first inertia ring, a second inertia ring and a plurality of dynamic damper elastic members, the first and second inertia rings axially split and having pairs of accommodation recesses axially opposed to each other, the plural dynamic damper elastic members accommodated in the pairs of the accommodation recesses of the first and second inertia rings and elastically coupling the intermediate member and the first and second inertia rings.