Abstract: Providing a torsional vibration damping device capable of increasing torsional stiffness without increasing elastic members in the radius direction. In the torsional vibration damping device 1, a spring seat 16 for holding an end portion 4a of a coil spring 4 is provided between the other end 19b of an arm member 19 and the coil spring 4, and the spring seat 16 which contacts the other end 19b of the arm member 19 is constituted of a tapered face 16a.

Abstract: A torsional vibration attenuation apparatus includes a driving rotation member and a driven rotation member which can be twisted in an enlarged torsion angle range with a non-linear torsional property, thereby preventing an excessively large torque from being transmitted from driving member to the driven member. The torsional vibration attenuation apparatus includes a boss, a cam member having a cam surface formed in an elliptical shape and provided on the outer peripheral portion of the boss to be integrally rotated with the boss, and a pair of arm members each provided between the cam member and a coil spring and having one end held in contact with the can surface and the other end held in engagement with a spring seat of the coil spring.

Abstract: The torque limiter includes a flywheel, a clutch plate, a spline hub, a clutch disc assembly and a transmission torque limiting part. The flywheel includes a friction coupling surface. The clutch plate includes plural axial through holes. Plural friction members are respectively attached to the through holes. The spline hub can be engaged with a transmission-side shaft. The clutch disc assembly circumferentially elastically couples the clutch plate and the spline hub. The transmission torque limiting part limits torque to be transmitted from the flywheel to the transmission-side shaft while the friction members are interposed and held between the transmission torque limiting part and the friction coupling surface of the flywheel.

Abstract: A device for drivingly connecting a drive component and a driven component by a spline includes an inner tooth pattern disposed on one of the components and a mating outer tooth pattern disposed on the other component, wherein one of the components is constructed in two parts and comprises two tooth sections configured for rotation relative to one another, at least one preload spring for tensioning the two tooth sections with respect to each other in the circumferential direction, and means which for assembling the plug-in connection maintain the two tooth sections in mutual alignment, wherein the means are constructed such that the at least one preload spring becomes automatically effective when the drive component and the driven component are connected with an axial assembly motion.

Abstract: The torque fluctuation absorber includes a flywheel fixed on a first rotating shaft by a fixation member, a damper unit connected with a second rotating shaft and absorbs fluctuation of torque occurred between the first rotating shaft and the second rotating shaft by elastic force, and a limiter unit provided on a power transmission path between the flywheel and the damper unit and inducing a slide when the fluctuation of the torque exceeded a predetermined value. A predetermined member rotates with the first rotating shaft on a power transmission path between the first rotating shaft and the limiter unit. The predetermined member has a side plate at the damper unit and a guide portion that prevents movement radially of a hub member, and the guide portion is provided at radially internal side of the fixation member.

Abstract: A drive coupling has an inner plate positioned within an inner periphery of an outer plate. The inner plate includes a plurality of outwardly-extending projections. The inner periphery of the outer plate includes a plurality of recesses. A plurality of short heavy-duty compression springs are arranged to compress in a substantially-straight linear direction between respective projections of the inner plate and the respective side wall of the recess of the outer plate. The springs are further retained by spring travel limiting guides which protrude from the outer plate. The inner plate and an associated central shaft are positively supported by bushings and/or bearings which reside in outer retaining plates. These bushings and/or bearings retain the inner and outer plates in a fixed non-yielding radial and axial position. Bolts are used to hold the outer drive plate and the external retaining plates together.

Abstract: A vibration damper including a first spline having a plurality of first teeth, a second spline having a plurality of second teeth, a third spline having a plurality of third teeth and at least one spring interconnected between the first and second splines, wherein the plurality of third teeth are intermediate the plurality of first teeth and the plurality of second teeth, and the at least one spring biases the plurality of first teeth and the plurality of second teeth against the plurality of third teeth.

Abstract: A damper for a torque converter, including: a cover plate for a damper; a turbine hub with a surface; and a pilot element rotationally connected to the cover plate and having a surface slidingly engaged with the surface for the turbine hub. The respective surfaces for the turbine hub and the pilot element are at least partially radially aligned and the pilot element is arranged to center the damper with respect to a longitudinal axis for the torque converter. In some aspects, the pilot element includes at least one axial protrusion engaged with the cover plate. In some aspects, the pilot element is formed of stamped metal. In some aspects, the pilot element is axially stabilized with respect to the turbine hub and the cover plate. In some aspects, the pilot element includes at least one radial protrusion slidingly engaged with a radial surface for the turbine hub.

Abstract: The present invention broadly comprises a vibration damper assembly for a torque transmitting device. The assembly includes a thrust washer secured by first and second components of a vibration damper and a hub secured by the first and second components. The vibration damper, thrust washer, and hub are secured in a fixed position with respect to one another. In some aspects, the torque transmitting device comprises a longitudinal axis and the thrust washer comprises a hub segment having substantially a toroidal shape and at least one retainer segment extending outward, with respect to the axis, from the hub segment. At least a portion of the at least one retainer segment is disposed between the first and second components.