An adjustment mechanism for a clutch is positioned between the diaphragm spring and the pressure plate, the adjustment mechanism including: a first cam ring rotatably fixed with respect to the pressure plate, a second cam ring rotatable relative to the first cam ring and both cam rings having a plurality of cam surfaces configured such that rotation of the second cam ring relative to the first cam ring varies a height of the adjustment mechanism, and a torsion spring including a longitudinal axis. The torsion spring is disposed in the annular groove. The torsion spring includes a helical round cylindrical body that extends to a first end connected to the first cam ring and the torsion spring has a second end connected to the pressure plate. The torsion spring applies a biasing force to the second cam ring promoting rotation of the second cam ring relative to the first cam ring. The pressure plate includes a locking slot formed therein partially through the pressure plate and through the opposing surface. The locking slot is formed at an angle relative to the opposing surface and the second end of the torsion spring includes a locking hook formed thereon. The locking hook extends perpendicular to the longitudinal axis of the torsion spring. The locking hook is disposed in the locking slot fixing the locking hook relative to the pressure plate.

A dog clutch for a vehicle includes gear-side meshing teeth provided on a shifting gear fitted so as to be rotatable relative to a shaft, and a dog ring disposed adjacent to the shifting gear in the axial direction of the shaft. The dog ring includes a first ring, a second ring, and springs interposed between the two rings. The first ring is provided with meshing teeth that can be meshed with the gear-side meshing teeth of the shifting gear. The second ring is provided with meshing teeth that can be meshed with the gear-side meshing teeth of the shifting gear. The springs are provided on the inner peripheral side of a circle that is centered on a rotational axis and that circumscribes a portion of the meshing teeth of the first ring and the second ring positioned on the outermost peripheral side.

A snap ring is configured to retain components within a clutch assembly. The snap ring has an annular body defining an opening through a center thereof. The annular main body defines a distal-facing surface and an opposite proximal-facing surface. A number of retention features extend from the distal-facing surface of the annular main body. Each retention feature has an axially-extending body portion a radially-extending engagement portion. The engagement portion is configured to engage a backing plate. A friction clutch assembly including a snap ring pair is also provided, which includes a clutch snap ring disposed adjacent to the snap ring including the retention features.

A snap ring is configured to retain components within a clutch assembly. The snap ring has an annular body defining an opening through a center thereof. The annular main body defines a distal-facing surface and an opposite proximal-facing surface. A number of retention features extend from the distal-facing surface of the annular main body. Each retention feature has an axially-extending body portion a radially-extending engagement portion. The engagement portion is configured to engage a backing plate. A friction clutch assembly including a snap ring pair is also provided, which includes a clutch snap ring disposed adjacent to the snap ring including the retention features.

A clutch device includes a clutch housing including a cylindrical portion and a bottom, a multiple disc clutch, a receiving member and a pressing member that moves in an axial direction with respect to the clutch housing to press the multiple disc clutch from the bottom side toward the receiving member. The pressing member includes an annular portion disposed radially inward or outward of the bottom and a plurality of protruding portions protruding in a radial direction from the annular portion, the annular portion being provided integrally with the protruding portions. The bottom of the clutch housing has a plurality of cutouts that accommodate the protruding portions. The protruding portions move in the axial direction within the cutouts to press the multiple disc clutch.

A torque limiter for a drive train includes a rotational axis, a first cover disc and a second cover disc, a central disc arranged axially between the cover discs, a first friction lining and a second friction lining, a radially outer connector and a radially inner connector, and a spring element. The first friction lining is for frictionally locking torque transmission between the first cover disc and the central disc, and the second friction lining is for frictionally locking torque transmission between the second cover disc and the central disc. The radially outer connector is permanently connected to the cover discs in a torque-transmitting manner, and the radially inner connector is permanently connected to the central disc in a torque-transmitting manner. The spring element is arranged between the central disc and the first friction lining or the second friction lining.

An adjustment mechanism for a clutch is positioned between the diaphragm spring and the pressure plate, the adjustment mechanism including: a first cam ring rotatably fixed with respect to the pressure plate, a second cam ring rotatable relative to the first cam ring and both cam rings having a plurality of cam surfaces configured such that rotation of the second cam ring relative to the first cam ring varies a height of the adjustment mechanism, and a torsion spring including a longitudinal axis. The torsion spring is disposed in the annular groove. The torsion spring includes a helical round cylindrical body that extends to a first end connected to the first cam ring and the torsion spring has a second end connected to the pressure plate. The torsion spring applies a biasing force to the second cam ring promoting rotation of the second cam ring relative to the first cam ring. The pressure plate includes a locking slot formed therein partially through the pressure plate and through the opposing surface. The locking slot is formed at an angle relative to the opposing surface and the second end of the torsion spring includes a locking hook formed thereon. The locking hook extends perpendicular to the longitudinal axis of the torsion spring. The locking hook is disposed in the locking slot fixing the locking hook relative to the pressure plate.

A method for forming a friction facing comprises placing a bonding powder mix in to a die, and placing a performance powder mix in to the die. Pressing the performance powder mix and the bonding powder mix creates a compact. Sintering the compact forms a friction facing. A clutch disc assembly can be formed. A clutch disc can comprise a mounting hole for securing a friction facing and a backer plate can comprise a pass-through hole. A mounting mechanism joins the mounting hole to the pass-through hole. The mounting mechanism comprises a head-height for a portion of the mounting mechanism that is mounted near the sintered compact. The bonding layer comprises a thickness corresponding to the head-height of the mounting mechanism.

A clutch disk for a vehicle may include a hub plate mounted on a shaft to restrict a rotation of the shaft, a sub plate rotatably mounted on the shaft, a presser mounted on the hub plate to restrict a position of the presser and protruding from the hub plate toward the sub plate, and a wave spring positioned between the hub plate and the sub plate, mounted to allow at least a part of the wave spring to adhere to the sub plate, and formed with a flexion to change a spaced distance from the hub plate depending on a rotation direction of the hub plate to thereby change a point and a level pressed by the presser depending on a relative rotation between the hub plate and the sub plate.

A wet multi-plate clutch comprising a first friction plate including a first carrier element with a first carrier element thickness, wherein the first friction plate further includes a first friction pad attached thereto, wherein the friction pad includes friction pad segments, between which parallel fluid channels are formed, wherein the first friction pad includes a first friction pad thickness, wherein the ratio of the friction pad thickness to the first carrier element thickness is between 0.25 and 0.85, and a second friction plate including a second carrier element with a second carrier element thickness.