Abstract: A damper device includes a first rotor, a second rotor, and an elastic coupling part elastically coupling the first and second rotors in a rotational direction. The elastic coupling part includes first and second elastic members that are each initially disposed in a compressed state in a neutral condition without relative rotation between the first rotor and the second rotor. The first elastic member is transitioned from the compressed state to a free state and then further compressed when torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a first side in the rotational direction. The second elastic member is transitioned from the compressed state to the free state and then further compressed when the torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a second side in the rotational direction.

Abstract: A damper device includes a first rotor, a second rotor, a plurality of elastic members, and a spring seat. The spring seat includes an end surface support portion and an outer periphery support portion. The end surface support portion includes a recess on a radially middle part thereof. The recess is recessed toward at least one of the elastic members. The end surface support portion supports one end surface of the at least one of the elastic members. The end surface support portion is supported by a pressing surface of a first accommodation portion of the first rotor and a pressing surface of a second accommodation portion of the second rotor. The outer periphery support portion supports part of a radially outer part of the at least one of the elastic members.

Abstract: A damper device includes a first rotor, a second rotor, a plurality of elastic members and a stopper mechanism. The stopper mechanism includes a plurality of first cutouts, a plurality of second cutouts and a plurality of stop members. A pair of the first and second cutouts is provided on both circumferential sides of each of a plurality of accommodation portions of the second rotor so as to circumferentially extend therefrom. The stop members are fixed to the first rotor. Each stop member is circumferentially movable within the pair of the first and second cutouts. The second rotor includes a first protruding portion circumferentially protruding on one of a pair of pressing surfaces of each accommodation portion. Each of the first cutouts, which is a hole, extends at an end thereof located closer to each accommodation portion toward the first protruding portion.

Abstract: A damper device includes first to third rotating elements rotatable about a rotational center; a first elastic element located between the first and third rotational elements and compressed by relative rotation of the first rotational element to the third rotational element in one rotational direction; a second elastic element located between the second and third rotational elements and compressed by relative rotation of the third rotational element to the second rotational element in the one rotational direction, a support member intervenient between the third rotational element and the first elastic element to support the first elastic element; and a restrictor provided with the third rotational element to rotatably support the support member in a plane orthogonal to the rotational center, to restrict the support member from rotating beyond a certain angle and from moving away from the third rotational element in rotational directions.

Abstract: An above ground frame pool is disclosed including a frame assembly and a liner supported by the frame assembly. The frame assembly includes a plurality of horizontal pipes, a plurality of vertical pipes, and a plurality of T-shaped joints. The joints may lack mechanical fasteners with adjacent pipes or corresponding apertures. The joints may be one-piece or multi-piece structures. Such joints may be water-resistant and convenient to manufacture, assemble, disassemble, and store.

Abstract: A damper device includes first to third rotating elements rotatable about a rotational center; a first elastic element located between the first and third rotational elements and compressed by relative rotation of the first rotational element to the third rotational element in one rotational direction; a second elastic element located between the second and third rotational elements and compressed by relative rotation of the third rotational element to the second rotational element in the one rotational direction, a support member intervenient between the third rotational element and the first elastic element to support the first elastic element; and a restrictor provided with the third rotational element to rotatably support the support member in a plane orthogonal to the rotational center, to restrict the support member from rotating beyond a certain angle and from moving away from the third rotational element in rotational directions.

Abstract: A clutch includes a hub and a flange located radially inside and outside, respectively, with respect to the clutch rotational axis and associated with hub and flange sides of the clutch. A spring elastically supports the hub and flange sides against each other in the circumferential direction in a torque-transmitting manner. A bearing radially supports the hub and flange sides against one another for rotation around the axis and includes an outer ring supporting the hub and an inner ring supported on a bearing pin associated with the flange side. A friction device connects the hub and flange sides in a friction-locked and torque-transmitting manner in the circumferential direction and includes a friction element and a friction surface which are pretensioned against one another in the axial direction. A tensioning device includes a tensioning element that applies force to, and axially pretensions, the friction device and bearing.

Abstract: A damper device includes: a pressing plate; a rotation plate disposed to oppose the pressing plate; an elastic member elastically linking the pressing and rotation plates, and in which bending is generated when relative twist of the pressing and rotation plates is generated; and seats provided on both end surfaces of the elastic member The seat has a projected surface, the pressing plate has a recessed surface corresponding to the projected surface, the seats and the pressing plate come into surface-contact with each other in a case where the relative twist is not generated, one seat and the pressing plate come into surface-contact with each other, and a void is formed between the other seat and the pressing plate, in a case where the relative twist is generated, and the void increases as an angle of the relative twist increases.

Abstract: A damper assembly for a torque converter is provided. The damper assembly includes a spring retainer including an interior space configured for holding springs and a spring support plate fixed to the spring retainer to define an inlet gap between a first section of an outer circumference of the spring support plate and the spring retainer for insertion of one of the springs. The outer circumference of the spring support plate further includes a second section circumferentially offset from the first section. The second section is arranged and configured with respect to spring retainer for axially holding the plurality of springs in the interior space during operation of the damper assembly. A torque converter and a method of forming a damper assembly for a torque converter are also provided.

Abstract: A torsional vibration damper comprises an input side and an output side which are arranged rotatably around an axis of rotation, an intermediate plate, and two elastic elements which are arranged on different circumferences around the axis of rotation, where the first elastic element is set up to transmit a power from the input side to the intermediate plate and the second elastic element is set up to transmit a power from the intermediate plate to the output side. Furthermore, the torsional vibration damper includes a single-piece retainer to support the first elastic element on a radially outer surface, while the retainer includes a contact element for engaging with one end of the first elastic element.

Abstract: A flywheel assembly includes a first elastic member disposed on a side to which an acceleration-side power of an engine is outputted and a second elastic member disposed in series with the first elastic member. The second elastic member exerts a transmission torque having a magnitude less than that of a transmission torque exerted by the first elastic member. An end sheet member includes a first end sheet member and a second end sheet member. The first end sheet member is slidable against a first rotary member. The second end sheet member is slidable against the first rotary member. A first intermediate sheet member included in an intermediate sheet member is disposed between the first elastic member and the second elastic member and is slidable against the first rotary member.

Abstract: A vibration damper, including a cover plate with an annular portion, and a spring portion including spring retaining portions forming respective spaces and a spring blocking portions including respective protrusion segments and respective tab segments including respective portions of an edge of the cover plate and having a same first thickness. The damper includes springs at least partially located in the respective spaces, and having respective longitudinal ends, and a second cover plate or output flange connected to the cover plate. The springs are arranged to transmit torque to the cover plate. The respective protrusion segments have a same second thickness and include respective protrusions. Respective first portions of the longitudinal ends of the springs are engaged with the respective protrusions. Respective second portions of the longitudinal ends of the springs are engaged with the respective tab segments.

Abstract: An end cap for an arc spring in a torsional vibration damper having a cylindrical section for engaging with the arc spring and a radial section at one end of the cylindrical section for engaging with an input or output side of the torsional vibration damper, the end cap being producible by shaping from a metal sheet. A torsional vibration damper for elastic transmission of torque between an input side and an output side including the described end cap for transmission of force between one of the sides and the arc spring.

Abstract: One embodiment may include a torsional vibration damper having a primary element, a secondary element and a spring device for torsionally elastic coupling of the primary and the secondary element in the circumferential direction, which spring device has at least one spring element, which is arranged between a first and a second sliding shoe, a spacing limitation device being provided to define a maximum spacing (Amax) between the first and the second sliding shoe in the circumferential direction. The spacing limitation device may extend through the at least one spring element in the circumferential direction.

Abstract: A torsion vibration damper for a drive train of a motor vehicle, in particular a drive train of a hybrid vehicle, comprising: a spring support and a force transmission flange configured rotatable relative to the spring support, wherein at least one compression spring is provided between the spring support and the force transmission flange for transferring a mechanical torque, wherein a housing of the spring support is configured so that in a radial direction of the torsion vibration damper, at least one longitudinal end of the compression spring is supported at/in the spring support housing and/or a clearance remains between windings of a center section of the compression spring and a wall of the spring support.

Abstract: The torsional shock absorbing apparatus includes a boss, a cam member provided on the boss to be integrally rotated with the boss and having a cam surface formed in an oval shape, and an arm member disposed between the cam member and a coil spring to transmit the rotation torque of the disc plates to the boss. The arm member has one end portion held in contact with the cam surface and the other end portion held in engagement with circumferential one end portion of the coil spring, and is swingable around the center of a pin provided on the disc plates.

Abstract: A damper mechanism includes a first flywheel, an output plate, a first spring assembly and a second spring assembly. The first spring assembly is disposed between a first support part and a transmission part in a preliminarily compressed state. The second spring assembly is disposed between a second support part and the transmission part in a preliminarily compressed state. The stopper part is disposed for making contact with the first spring assembly and the second spring assembly in the rotational direction. Gaps are reliably produced in the rotational direction between the stopper part and both of the first spring assembly and the second spring assembly in a neutral state of applying no external force to the first flywheel and the output plate.

Abstract: A first flywheel assembly a first flywheel, a second flywheel, a first spring set, a first spring seat, and a second spring set. The first spring set is arranged between the first flywheel and the second flywheel in a pre-compressed state. The first spring seat is a member that supports an end portion of the first spring set and is pushed in a radially outward direction against the first flywheel. The second spring set is a member having a lower stiffness than a stiffness of the first spring set and is arranged between the second flywheel and the first spring set in a pre-compressed state such that it acts in series with the first spring set.

Abstract: A torsional shock absorbing apparatus is constructed to have the outer peripheral portions of first spring seats move along the outer supporting edge portions of the side plate when the hub is twisted with respect to the side plate in the positive rotation side, and to have the outer peripheral portions of second spring seats move along the outer supporting edge portions when the hub is twisted with respect to the side plate in the negative rotation side. The sliding resistance of the first spring seat and the outer supporting edge portions is larger than the sliding resistance of the second spring seat and the outer supporting edge portions.

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 torque fluctuation absorber includes a seating member having a pivoting portion at an inner portion in a radial direction and a supporting portion, which rotationally supports the pivoting portion, at an end surface in a circumferential direction of a first and a second opening portion. When no relative rotational torsion existing between a first and a second rotational member, the pivoting portion is in contact with the supporting portion and a clearance is defined between a portion on each seating member positioned outwardly in a radial direction relative to the pivoting portion and a portion of the first and the second opening portion positioned outwardly in a radial direction relative to the supporting portion. At a first torsion angle, the portion on each seating member contacts the portion of first or second opening portion in a state where the pivoting portion is in contact with the supporting portion.

Abstract: A shoe mounts an outer spring defining a longitudinal direction and an inner spring arranged within the outer spring. The outer and inner springs define corresponding end sides of the outer and inner springs, and the shoe defines an end side of the shoe. A spring-position limitation limits the outer spring in its longitudinal direction and enables the inner spring to emerge at the end side of the shoe out of the outer spring. A driver primary element exerts a pressure on the inner spring as the driver approaches the outer and inner springs in a direction of the corresponding end sides of the outer and inner springs.

Abstract: A torque fluctuation absorber includes a first rotary member formed into an annular shape and including a first protruding portion formed at an inner circumferential surface, a second rotary member connected to the first rotary member, a third rotary member including a second protruding portion formed at an outer circumferential surface, a damper portion absorbing torque fluctuations caused by torsion generated between the second rotary member and the third rotary member, and an elastic member arranged between the first protruding portion and the second protruding portion and absorbing a shock generated when the first protruding portion directly makes contact with the second protruding portion when the damper portion absorbs the torque fluctuations caused by the torsion generated between the second rotary member and the third rotary member.

Abstract: A torsional vibration damper includes a primary element with at least one primary driver, a secondary element with at least one secondary driver, at least one spring device between the primary and secondary drivers for resiliently elastic coupling of the primary and secondary elements, and at least one end block arranged on an end side of the spring device. The primary element is rotatable relative to the secondary element from a neutral position into a first position, in which the primary driver is supported only on the spring device, and from the first position onward into a second position, in which the primary driver is supported on the spring device and on the end block. In the first and second positions of the primary element, torque of the torsional vibration damper can be transmitted exclusively directly between the primary driver and spring device.

Abstract: A vehicle assembly includes an engine having a damper assembly secured to the engine. The damper assembly includes a ring gear. A hybrid transmission having an input shaft is mounted on the mounting shaft of the damper assembly. The damper assembly includes an engine face plate and a transmission face plate secured to the engine face plate. The ring gear is secured to at least one of the transmission face plate and the engine face plate.

Abstract: A torsional vibration damper includes at least one spring element and a sliding block. The sliding block includes a first surface section that operatively faces an adjacent spring element, is harder than another surface section of the sliding block, has first and/or second supporting surfaces for radial support of the spring element, and has first and/or second supporting surfaces for axial support of the spring element. A second surface section has a sliding surface for sliding support of the sliding block, and a basic body includes plastic. The first and/or second surface section(s) is/are formed by at least one first insert that is harder than the plastic. The first surface section is formed by at least two elongate second inserts that are spaced apart from one another and projected and on which the spring element can be supported in a centering manner in a radial direction.

Abstract: Second spring seats 62 each have a first support component 63, a second support component 64, and a reinforcing plate 66. The first support component 63 supports the ends of second coil spring 61a in the rotational direction. The second support component 64 extends in the rotational direction from the first support component 63 and supports the end of the second spring 61a in the radial direction. At least part of the reinforcing plate 66 is embedded in at least one of the first and second support components 63 and 64. The reinforcing plate 66 directly or indirectly supports the end of the second spring 61a along with the first and second support components 63 and 64.

Abstract: Second spring seats 62 each have a first support component 63, a second support component 64, and a pair of reinforcing components 65. The first support components 63 support the ends of second coil springs 61a in the rotational direction. The second support components 64 extend in the rotational direction from the first support components 63, and support the ends of the second coil springs 61a in the radial direction. The reinforcing components 65 link the first support components 63 and the second support components 64, and extend in the radial direction from the second support components 64.

Abstract: An internal combustion engine comprises includes a turbo-compound and the known Föttinger-coupling is replaced by a torsion vibration damper. The Föttinger-coupling, which is used to transmit power, has high losses in power when it is necessary to have a differential rotational speed between the input side and the output side, that is, the appearance of a slip. The losses are not used in a torsion vibration damper which has at least the same quality as a Föttinger-coupling.

Abstract: A first flywheel assembly a first flywheel, a second flywheel, a first spring set, a first spring seat, and a second spring set. The first spring set is arranged between the first flywheel and the second flywheel in a pre-compressed state. The first spring seat is a member that supports an end portion of the first spring set and is pushed in a radially outward direction against the first flywheel. The second spring set is a member having a lower stiffness than a stiffness of the first spring set and is arranged between the second flywheel and the first spring set in a pre-compressed state such that it acts in series with the first spring set.

Abstract: A damper assembly has a torque input member configured to be connected to engine crankshaft through a torque limit clutch. An output member has a hub configured to be mounted to a transmission input shaft. Damping springs operatively interconnects the input member and output member, enabling the input member and output member to rotate relative to each other at some angular displacements before the input torque from engine crankshaft is completely transmitted to transmission input shaft. The damping springs includes a series of long springs and a series of relatively short spring. The long springs compress before the short compress as the input member rotates relative to the output member.

Abstract: A damper assembly for absorbing and attenuating torsionals and vibrations transmitted from an engine to a transmission is provided. The damper assembly includes a damper flange with a plurality of spring-mass damper systems operatively attached thereto and elongated circumferentially about its outer periphery. Each spring-mass damper systems include an inner spring nestably positioned inside an outer spring, a first spring retainer having a base portion defining a first interface surface with a first pilot portion extending therefrom to define a second interface surface with a second pilot portion extending therefrom, and a second spring retainer having a base portion defining an interface surface with a pilot portion extending therefrom to define a fourth interface surface. The first and third pilot portions engage with and thereby restrict axial and radial movement of the outer spring. The second pilot portion is attached to the inner spring thereby restricting relative movement therebetween.

Abstract: A drive lug for a piston plate in a torque converter, including a base operatively arranged for attachment to the piston plate and a protruding portion integral to the base and extending axially from the base. The protruding portion is operatively arranged to engage with a damping element in the torque converter. In some aspects, the plate is arranged for attachment with a plurality of drive lugs, while in other aspects, the drive lug is arranged for attachment to the plate with at least one rivet. In some aspects, the lug is made of a hardenable material or by forging. In some aspects, the piston plate further includes an outer circumference and the drive lug is arranged to be secured proximate the outer circumference. In some aspects, the damping element further includes a spring and the drive lug is arranged to engage with the spring. In some aspects, the piston plate further includes an axial width, the drive lug further includes a radial width, and the radial width is greater than the axial width.

Abstract: A torsional vibration damper, particularly for use in the power train of a motor vehicle, employs one or more preferably arcuate coil springs having constant inner radii and one or more sets of neighboring smaller-diameter convolutions next to one or more sets of neighboring larger-diameter convolutions. The coil spring or springs is or are compressible by the retainers of two components which can turn, about a common axis, with and relative to each other and at least one of which defines a chamber for the coil spring(s). The retainers of the components can act upon the adjacent end convolutions of the coil spring or of two or more series-arranged coil springs between them by way of plastic slide elements and/or elastic bumpers.

Abstract: A torsional vibration damper includes a primary mass defining a ring-shaped chamber, a secondary mass relatively rotatably connected to the primary mass, and a damping unit for coupling the primary and secondary masses to each other in a rotationally elastic manner. The damping unit comprises a plurality of coil springs, a pair of end guides, and a friction member slidably disposed between neighboring coil springs. The friction member is configured to be rubbed against at least one of an inner wall and an outer wall of the ring-shaped chamber in response to compressions of the coil springs such that a friction force is generated in proportion to a relative rotation between the primary and secondary masses as well as to a rotational speed thereof.

Abstract: A torsional vibration damper is provided which comprises a primary mass, a secondary mass, and a damping unit. The primary mass defines a ring-shaped chamber, and the ring-shaped chamber is divided into at least two portions. The secondary mass is rotatably connected to the primary mass. The damping unit couples the primary and secondary masses to each other in a rotationally elastic manner. The damping unit comprises a plurality of elastic members, a pair of end guide, and a friction member disposed between the elastic members.

Abstract: A torsional vibration damper is provided which comprises a primary mass, a secondary mass, and a damping unit. The primary mass defines a ring-shaped chamber, and the ring-shaped chamber is divided into at least two portions. The secondary mass is rotatably connected to the primary mass. The damping unit couples the primary and secondary masses to each other in a rotationally elastic manner. The damping unit comprises a plurality of elastic members, a pair of end guide, and a friction member disposed between the elastic members.

Abstract: A damper mechanism for a lockup device 7 is a device for mechanically transmitting a torque in a torque converter 1. A coil spring 58 is arranged in first and second windows 61 and 62 overlapping with each other, and is compressed in accordance with the relative rotation of drive and driven members 52 and 53. A maximum torsion angle ? m is defined when the coil springs 58 are compressed to a maximum extent by relative rotation between the drive and driven members 52 and 53. Each of the first and second windows 61 and 62 has an outer periphery longer than an inner periphery. Each ends 61a and 62a on the circumferential ends of the first and second windows 61 and 62 form an angle ? with respect to a center line extending through a center O of the damper mechanism and a circumferential center C1 or C2 of the first or second window 61 or 62, and this angle ? is in a range between 0.05 and 0.60 times as large as the maximum torsion angle ? m.