In an automatic transmission including a deceleration planetary gear and a hydraulic clutch, the hydraulic clutch includes a clutch drum, a clutch hub, first and second friction engagement plates, a piston, and an engagement oil chamber defining member. The clutch hub is formed by a ring gear and a support member that rotates together with the ring gear. The piston is movably supported by the clutch hub. The piston and the support member define a cancel oil chamber that cancels a centrifugal oil pressure generated in an engagement oil chamber.

A power transmitting device that includes a shaft, a friction clutch, a lubricant passage and an oil spout. The friction clutch defines a lubricant chamber. The lubricant passage is disposed between the shaft and the lubricant chamber and has a passage outlet that intersects the lubricant chamber. The oil spout is received in the lubricant chamber and extends along a longitudinal axis of the shaft such that the oil spout is disposed about the lubricant passage and a portion of a hub portion of the friction clutch. The oil spout diverges radially outwardly from the hub portion with increasing distance from the lubricant passage in a direction toward an outlet of the oil spout.

A clutch disc assembly, comprising a friction plate, a damper fixedly secured to the friction plate, comprising an inwardly facing saline and a retainer plate, the retainer plate comprises a first radially inwardly facing surface and a second radially inwardly facing surface radially offset from the first radially inwardly facing surface, and a hub, the hub comprises a first radially outwardly facing surface having a circumferential groove, a second radially outwardly facing surface having an outer saline that meshes with the inwardly facing saline to non-rotatably connect the hub and the damper, and an internal saline surface.

A clutch carrier includes a stamped carrier and a hub portion. The stamped carrier has a first circumferential wall, a second circumferential wall axially and radially offset from the first circumferential wall, and a first radial wall extending radially inward from the second circumferential wall. The hub portion has a third circumferential wall extending from the first radial wall, a fourth circumferential wall axially and radially offset from the third circumferential wall, and a second radial wall connecting the third and fourth circumferential walls. In some example embodiments, the first circumferential wall includes a plurality of axially extending fingers for driving engagement with a clutch plate. In an example embodiment, each of the plurality of axially extending fingers includes a groove for receiving a retaining ring.

A dual clutch having a first clutch which has a first pressure plate that is movable axially relative to a first counterplate for coupling a first clutch disk that is connected to a first output shaft, a second clutch, which has a second pressure plate that is axially movable relative to a second counterplate for coupling a second clutch disk that is connected to a second output shaft, a torsional vibration damper situated in the direction of flux force between the input shaft and the first counterplate wherein the torsional vibration damper includes a dual mass flywheel with a bow spring running in the circumferential direction to transmit torque, where the flux of force is introducible radially on the outside from the input shaft to the first counterplate into the dual mass flywheel, and is dispersible radially on the inside to the bow spring.

A friction engagement device of an automatic transmission is provided, which includes a rotational member comprised of at least one of a drum member and a hub member including a spline part engaged with a friction plate to be movable in axial directions of the automatic transmission, and a drive force transmitting part for exchanging a drive force with another rotational element. The drive force transmitting part of the rotational member is made of a ferrous metal. A part of the rotational member other than the drive force transmitting part is made of a clad material containing a first material that is easily joined to the ferrous metal and a second material that is less easily joined to the ferrous metal compared to the first material and weighs less than the ferrous metal.

A drive assembly for a motor vehicle clutch is provided. The drive assembly includes a subassembly includes at least one clutch facing and at least one support segment supporting the at least one clutch facing, the at least one support segment including an outer radial portion fixed to the at least one clutch facing and an inner radial portion extending radially inward from the outer radial portion; an extender connected to the inner radial portion of the at least one support segment; and a cover plate, the extender connecting the subassembly to the cover plate. A method of forming a drive assembly and a method of forming a plurality of drive assemblies are also provided.

A clutch D hub for a transmission having first and second clutch packs and a shaft. A drum has a bottom wall and a sidewall extending therefrom. The bottom wall has an opening and the sidewall has splines formed in an inner surface that extend from an upper edge toward the bottom wall. The splines are engageable with the first clutch pack during operation. A spline hub formed separately from the drum has a top wall and a skirt extending therefrom. The top wall of the spline hub is coupled to the bottom wall of the drum to be non-rotatable relative thereto, so an opening in the top wall coaxially aligns with the opening in the bottom wall of the drum so the shaft is receivable therethrough. The spline hub has axially oriented splines formed in an outer surface, which are engageable with the second clutch pack during operation.

The present invention relates to a disk (38) for a disk clutch (26) comprising an annular base element (76) which has a toothing (78) with multiple teeth (80) for achieving a rotary driving engagement with a disk carrier (34), wherein the base element (76) has at least one hardened region (96) in which the base element (76) is designed as harder than in the tooth flank regions (98, 100) of the teeth (80). In addition, the present invention relates to a disk clutch (26) with such a disk (38), a double clutch device (2) with such a disk clutch (26), and a method for producing such a disk (38).

A transmission is provided. The transmission may include a planetary gearset. The transmission may also include a thrust hub that may be fixed to the planetary gearset and engaged with a thrust bearing. A clutch hub may be connected with and spaced away from the thrust hub such that the thrust and clutch hubs are not in contact with each other to reduce vibration transfer between the thrust and clutch hubs.