Abstract: Torque converter arrangements and operating methods are provided herein. In one example, the torque converter includes a first attachment interface designed to rotationally couple to a prime mover and a second attachment interface designed to rotationally couple to a transmission. The torque converter further includes a lock-up clutch with an engagement spring embedded in an actuation piston, a plurality of separator plates supported by one or more guiding pins that extend through the plurality of separator plates and into a casing, and a plurality of friction plates interleaved with the plurality of separator plates, where the plurality of separator plates and friction plates are axially captured between the actuation piston and an end plate.

Abstract: The present invention provides a coil spring, in which a corresponding portion is provided at an end portion in a direction of a coil axis, the corresponding portion having a whole size in the direction of the coil axis of the plurality of wire materials adjacent to each other in the direction of the coil axis equal to a maximum value of a gap in the direction of the coil axis between wire materials adjacent to each other in the direction of the coil axis of the coil spring, a gap in the direction of the coil axis between the corresponding portion and a wire material adjacent to the corresponding portion on an inner side in the direction of the coil axis is smaller than a wire height in an active coil portion of the coil spring, and at the end portion of the direction of the coil axis, a gap in the direction of the coil axis between a portion extending around the coil axis from the corresponding portion to a distal end portion side of the wire material and a wire material adjacent to the portion on the inner

Abstract: A damper apparatus that includes an input to which a torque from an engine is transferred; an output; a first intermediate element; a second intermediate element; a first elastic body configured to transfer the torque between the input and the first intermediate element; a second elastic body configured to transfer the torque between the first intermediate element and the output; a third elastic body configured to transfer the torque between the input and the second intermediate element; a fourth elastic body configured to transfer the torque between the second intermediate element and the output; and a fifth elastic body configured to transfer the torque between the first intermediate element and the second intermediate element.

Abstract: A damper apparatus includes a drive plate, a driven plate, torsion springs, and spring housing portions. The torsion springs each have a large arc spring and a small arc spring, and elastically couple the drive plate and the driven plate in the rotation direction and transmit torque. The spring housing portions have a support surface that can support the outer periphery of the large arc springs, and the support surface comes into contact with the outer periphery of the central portions, in the lengthwise direction, of the large arc springs. Also, gaps exist between the support surface and the outer periphery of the two end portions, in the lengthwise direction, of the large arc springs.

Abstract: An improved torque converter damper disc and/or clutch that includes the use of a parametric spring system. The parametric spring is configured to address critical inflection and pinch points along the spring longitudinal length. These critical points are areas of higher applied stress due to torsional stress and bending stress, the latter of which mainly attributed to centrifugal loading.

Abstract: A clutch plate (100) including a plate assembly (111) having an annular periphery to which an assembly of friction material (114,115) is applied to face in opposite directions. A hub (120) is provided for connection to an output shaft and a hub flange (132) is driveable by the plate assembly to rotate. The hub (120) is driveable to rotate by the hub flange (132). The hub (120) and the hub flange (132) are angularly displaceable relative to each other within a predetermined range and are coupled together by a tension spring (125) which extends radially relative to the axis of rotation of the hub and which applies a biasing load against relative angular displacement between the hub (120) and the hub flange (132).

Abstract: A clutch plate (100) including a plate assembly (111) having an annular periphery to which an assembly of friction material (114,115) is applied to face in opposite directions. A hub (120) is provided for connection to an output shaft and a hub flange (132) is driveable by the plate assembly to rotate. The hub (120) is driveable to rotate by the hub flange (132). The hub (120) and the hub flange (132) are angularly displaceable relative to each other within a predetermined range and are coupled together by a tension spring (125) which extends radially relative to the axis of rotation of the hub and which applies a biasing load against relative angular displacement between the hub (120) and the hub flange (132).

Abstract: The lock-up device includes an input rotary member, an output rotary member, a first torsion spring, a second torsion spring and a third torsion spring. The output rotary member is rotatable relatively to the input rotary member. Torque is transmitted to the first torsion spring from the input rotary member. The second torsion spring is disposed on a further inner peripheral side than the first torsion spring in a radial direction, and is configured to act in series with the first torsion spring. The third torsion spring is disposed on a further outer peripheral side than the second torsion spring in the radial direction, and is configured to act in series with the second torsion spring and transmit the torque to the output rotary member.

Abstract: A spring retaining space that retains therein an arc spring has a predetermined curvature radius and attachment angle. The arc spring is flexed and retained in the spring retaining space, and thus the curvature radius of the arc spring becomes small, while the attachment angle of the arc spring becomes larger than a free angle. Accordingly, torsion stress with a negative sign is applied to a coil member forming the inner circumferential portion of the arc spring.

Abstract: An arc spring damper, including: a plurality of arc springs, a driving flange having a plurality of driving spring segment, a driven flange having a plurality of driven spring segments, and a ring plate including a plurality of radially extending retention segments. Each arc spring in the plurality of arc springs includes a passageway with first and second openings at first and second longitudinal ends, respectively, for the arc spring. Each driving spring segment includes a circumferentially extending driving portion and each driven spring segment includes a circumferentially extending driven portion. For each spring, a respective driving portion passes through the first opening into the passageway and a respective driven portion passes through the second opening into the passageway. Each radially extending segment from the plurality of radially extending segments is connected to and rotatable with a spring from the plurality of arc springs and radially restrains the arc spring.

Abstract: A torsional vibration damping device (1), in particular for a motor vehicle clutch, said device comprising a disc (60) and a support (80) mounted mobile in rotation relative to each other about a common main axis, and linked in rotation via circumferential elastic members (90) damping torsional vibrations, said elastic members being interposed between the disc (60) and the support (80) and maintained in position circumferentially via lugs (65) of the disc (60) and lugs (82,84) of the support (80) whereon are supported the elastic members (90) and radially via a guide ring (100) passing through the elastic members (90) and integral with the disc (60). Said device is characterised in that the lugs (82,84) of the support (80) are mounted on either side of a section of the ring (100) and the lugs (65) of the disc (60) can move freely at the angle between the lugs (82,84) of the support (80).

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.

Abstract: A hydraulic clutch has an impeller wheel, a turbine wheel with a turbine wheel shell, and a torsional vibration damper. The turbine wheel is drivable by the impeller wheel. The turbine wheel shell is mounted in an axial and radial sliding bearing so as to be rotatable with respect to a turbine wheel hub. The torsional vibration damper is arranged on the turbine wheel hub so as to be fixed with respect to rotation relative to it. The turbine wheel hub is drivable by the turbine wheel via the turbine wheel shell and the torsional vibration damper. The turbine wheel shell acts on the torsional vibration damper via a connection element. The axial sliding bearing is spatially offset with respect to the radial sliding bearing.

Abstract: A clutch disk assembly 1 is provided with a hub flange 7, a pair coil springs 8, a pair of coil springs 9, an intermediate rotary member 10, and a pair of plates 12 and 13. The hub flange 7 has a boss 7a and an integrally formed flange 7b. The flange 7b has a pair of first window holes 7c and a pair of second window holes 7b. The two coil springs 8 are arranged respectively in the pair of first window holes 7a. The more rigid two coil springs 9 are arranged respectively in the pair of second window holes 7b and window parts 25 of the plates 12 and 13. The intermediate rotary member 10 couples the coil springs 8 and the coil springs 9 together in the rotational direction. The two plates 12 and 13 are arranged on both axially facing sides of the flange 7b.

Abstract: A torsional vibration damping apparatus which operates between the crankshaft of the engine and the input shaft of the transmission in a motor vehicle has two flywheels which are rotatable relative to each other against the opposition of one or more dampers installed in a fluid-containing chamber of the flywheel which is connected to the crankshaft. The chamber has one or two annular compartments for the coil springs of the damper or dampers, and such coil springs are precurved over their longitudinal extension. Each precurved spring has a center of curvature and includes neighboring convolutions each having a first portion nearer to and a second portion more distant from the center of curvature of the respective spring.

Abstract: A damper mechanism is provided to achieve intended torsion characteristics in a damper mechanism using coil springs of an irregular pitch type. Coil spring assemblies 4 are employed for elastically coupling plates and a hub flange in a rotating direction. The coil spring assembly 4 includes a coil spring 28 of an irregular pitch type and a pair of spring seats 29 and 30. The spring seats 29 and 30 are engaged with the ends of the coil spring 28 while being prevented from relatively rotating around an axis of the coil spring 28, respectively. The spring seats 29 and 30 are engaged with the plates and the hub flange while being prevented from relatively rotating around the axis of the coil spring 28.

Abstract: A torsional vibration damper for incorporation into the torque transmission path between two components or subassemblies, especially for a hydrodynamic coupling device, includes at least two disk-like damper members. Each damper member has a radially outward coupling region and a radially inward coupling region, and at least one deformation region extending between the radially outward coupling region and the radially inward coupling region. Each deformation region is elastically deformable at least in some areas to permit a relative circumferential movement between the radially outward coupling region and the radially inward coupling region.

Abstract: A torsional vibration dampening assembly includes a hub having a radially outwardly extending flange with a plurality of openings formed therethrough. A pair of cover plates are supported on the hub for rotation relative thereto, each having a corresponding plurality of openings formed therethrough. A first stage vibration damper, including an annular central damper element having inner and outer rings secured thereto, extends between the second cover plate and the hub. A second stage vibration damper includes a spring damper assembly provided in each of the openings. Each of the spring damper assemblies includes a coiled spring having ends that react against first and second end caps. A movement restraining structure is provided for restraining the end caps from moving freely relative to one another under the urging of the spring. A hollow cylindrical isolation sleeve is disposed about each of the springs.

Abstract: A dual mass vibration damping flywheel includes a primary mass flywheel and a secondary mass flywheel connected to the primary mass flywheel. A drive plate having a characteristic shape is positioned between the primary mass flywheel and the secondary mass flywheel, the drive plate being rotated in response to rotation of the primary mass flywheel. A spring assembly is provided having a roller member at one end thereof, the roller member being in contact with the characteristic shape of the drive plate and compressing the spring assembly upon rotation of the drive plate. The drive plate is formed as an axe shape such that the roller of the spring assembly rolls in contact with the characteristic shape of the drive plate upon rotation of the drive plate and the primary mass flywheel. The effect of the spring assembly and roller against the characteristic shape of the drive plate is to dampen the vibration of the dual mass flywheel.

Abstract: A clutch unit according to the present invention includes a driving sleeve fixed to a driving shaft and a driven sleeve fixed to a driven shaft. A coil-like clutch spring is received on the driven sleeve, and a clutch sleeve is received on the driving sleeve. When the driving shaft is rotated normally or reversely, the driving sleeve abuts one of the arm portions of the clutch spring. Consequently, the clutch spring engages the driven sleeve. Torque producing rotation in either direction is transmitted to the driven shaft. The clutch unit also can operate as an overrunning clutch. When the clutch unit is adapted to a film feeding and driving system in a camera, the clutch unit can be positioned to utilize what had been dead spaces in a camera body, thus promoting compact camera design.

Abstract: A spring damper device includes cylindrical outer coil springs and inner springs inserted in the outer coil springs, respectively. The cylindrical outer coil springs are held in the form of arcs of a circle at angular intervals therebetween by a retainer plate, whereas the inner springs have a length shorter than the outer coil springs so that the inner springs are actuated a predetermined angle later compared with their corresponding outer coil springs. Each of the inner springs has a diameter smaller at opposite end portions thereof than at a central portion thereof.

Abstract: A damper apparatus which includes a first disc member, at least one coil spring, and a second disc member. The first disc member includes at least one window generally trapezoidal in shape, with at least one coil spring disposed within each window. The coil spring comprises a plurality of wire coils that spirally extend at a generally constant pitch and include first and second end portions, with the end portions being tapered and disposed in the same plane as the last coil on each end of the coil spring. The overall shape of the coil spring when in a torsion and stress free state is generally trapezoidal. The second disc member is disposed on one or both sides of the first disc member and includes a portion which engages with the first and second end portions of the coil spring.

Abstract: In a lock-up clutch for a torque convertor, the number of mechanical parts is reduced to thereby simplify the structure. The lock-up clutch used in the torque convertor is provided with a clutch portion composed of a piston member and an elastic coupling portion composed of an outer circumferential support member and arc springs. The arc springs extend in the circumferential direction. The outer circumferential support member integrally includes outer circumferential support portions for covering outer circumferences of the arc springs and circumferential direction support portions engages with both ends, in the circumferential direction, of the arc springs.