A dust boot (2) for an articulated transmission joint has a tulip (6) presenting an open end (62) and an opposite end designed to be secured to a first shaft (8), a second shaft (10), and rolling bearing means (3) mounted on an end (13) of the second shaft (10). The bearing means (3) has rolling elements (34) housed in a cage (32). The dust boot (2) includes a groove (24) suitable for receiving at least some of the rolling elements during an inclined movement of the second shaft (10) towards an outlet of the tulip, and a shoulder (22) separated from the groove (24) by a peripheral wall (25) that co-operates with the shoulder (22) to define a housing suitable for receiving a portion of the cage (32) of the bearing means (3) when the cage (32) is in abutment against the shoulder (22).

A pressure plate of a clutch device includes a clutch outer member for supporting friction discs, and a clutch center member for supporting clutch discs. The pressure plate has a deep hole portion for accommodating a clutch spring acting between the pressure plate and the clutch center member; and a through hole at a center thereof extending between an inside and an outside of the clutch device in a clutch axis direction. Oil is supplied from the outside into the through hole. The pressure plate has a radial passage extending in a radially outward direction from the through hole at an axially inner end portion of the through hole to make the inside and outside of the through hole communicate with each other. An annular rib is formed on a peripheral surface of an outer end portion of the through hole extending toward the center of the through hole.

Actuation unit for a clutch system of a motor vehicle drivetrain including: a drive plate on an input shaft of the clutch system; a clutch piston arranged to actuate a clutch of the clutch system; a compensation chamber plate defining a compensation chamber; wherein the clutch piston separates a pressure chamber between the drive plate and the clutch piston from the compensation chamber between the clutch piston and the compensation chamber plate. The pressure chamber contains a hydraulic fluid for hydraulically actuating the clutch piston, and the compensating chamber is arranged to compensate centrifugal force pressure on the clutch piston. The compensation chamber plate is fixedly connected to the drive plate.

A clutch conversion kit is usable to convert a truck or other machine from a lever actuated dry clutch to a fluid actuated clutch. The kit (49) includes a hub (50) which engages an input shaft (56) of the transmission (16). A fluid pressure actuated cylinder (68) is mountable on the hub and is operative to selectively axially compress friction discs (122) and separator discs (124) included in a disc pack (120). A flexible drive coupling (170) and drive ring adapter (146) are engageable with a drive ring (138) that is engageable with the friction discs. A pin (204) is positionable to hold the cylinder in a fixed rotational position while a shaft collar (202) and other components of the kit are used to assure proper positioning and operation of the components of the kit.

A clutch structure includes a rotary shaft, a cylinder, and a clutch. An outer peripheral fitting surface of the rotary shaft includes an engagement groove. The engagement groove extends in an axial direction along a rotation axis of the rotary shaft. A clutch cover of the clutch includes an engagement protrusion. The engagement protrusion protrudes inwardly in a radial direction with respect to the rotation axis from an inner peripheral surface of an annular inner edge of the clutch cover. The engagement protrusion engages in the engagement groove to hinder the clutch cover from rotating about the rotation axis relative to the rotary shaft.

A wet clutch assembly can include a clutch pack having a plurality of friction members attached to a first clutch housing and a plurality of separator members attached to a second clutch housing. The friction members and the separator members can be configured to be selectively contacted to each other to engage the first housing member to the second housing member. The clutch pack can be in fluid communication with a lubrication source such that a lubrication flow can flow to the friction members and the separator members to remove heat and/or debris therefrom.

A clutch basket of a clutch for a transmission can include a clutch housing shaped to house a clutch pack in the clutch housing, wherein the clutch housing has a housing outer diameter, a neck integral with and extending axially from the clutch housing, the neck having a neck outer diameter smaller than the housing outer diameter, at least a first gear integrally formed or mounted on the neck and extending radially outward from the neck, wherein the first gear includes a first gear outer diameter. In certain embodiments, the housing outer diameter can be different from the first gear outer diameter.

A driving force transmission device includes a clutch housing configured to be connected to a propeller shaft; a shaft including a weakened portion that is a portion in an axial direction of the shaft; a multi-plate clutch disposed between the clutch housing and the shaft; a case member including a housing portion having a cylindrical shape, the housing portion being configured to house at least a part of the clutch housing; and a falling-off preventing member configured to, when the shaft is broken at the weakened portion, allow rotation of the clutch housing while restraining the clutch housing from falling off the housing portion.

A component and method for forming the component utilizing ultra-high strength steel is provided. The method includes the steps of providing a blank of ultra-high strength steel and forming the blank into an unfinished component. Next, heating the unfinished component and moving an inner tooling member and an outer tooling member relative to one another to sandwich the heated component therebetween. Further, moving a punch member from a withdrawn, unactuated position to an extended, actuated position to contact the component while sandwiched between the inner and outer tooling members to form a feature including at least one of a thickened region having an increased thickness relative to an adjacent region, a recessed annular groove, a recessed pocket, a through hole, a flange, a through hole having a tab extending outwardly therefrom, or spline teeth. Then, quenching the feature.

A sealed actuator with internal clutching assembly including an output shaft, output detent ring, moving detent ring, and a wave spring, which is fit inside a sealed housing. The moving detent ring is able to move axially to the output shaft and the output detent ring is able to rotate on the output shaft. Intermeshing ramped teeth of these rings are held together by a wave spring and allow the output shaft to rotate and transmit torque of a motor through a main gear operably coupled to an output gear mounted on the output shaft to the outside of the housing. During predetermined high loads, the output and moving detent rings ramped teeth create an axial force that overcomes the load from the wave spring, which allows moving detent ring to disengage and output shaft to rotate freely to help prevent damage to the actuator.