Friction clutch assemblies with low-drag clutch packs having cone-clutch synchronizers and dog-clutch bypass devices are presented. A friction clutch assembly includes a housing that drivingly couples to an output (or input) member, and a disc hub rotatably mounted inside the housing that drivingly couples to the input (or output) member. A disc carrier is rotatably and slidably mounted inside the housing coaxial with the disc hub. A clutch pack includes reaction plates secured to the housing (or disc carrier) for common rotation therewith, and friction plates interleaved with the reaction plates and secured to the disc carrier (or housing) for common rotation therewith. A cone clutch is interposed between the clutch pack and disc hub such that frictional engagement of the cone clutch with the disc hub allows for compression of the pack to carry torque from the input member, through the disc hub and housing, to the output member.

An improved clutch basket assembly is disclosed. The improved clutch basket assembly provides improved wear resistance at the interfaces between friction discs and a clutch basket housing while allowing an operator to have improved clutch lever control and modulation when manually engaging or disengaging the clutch system. The improved clutch basket assembly includes a generally cylindrical clutch basket having a sidewall, a closed first end and an open second end. A plurality of removable pins is attached to the sidewall. A plurality of frictions disks is mounted in said clutch basket. The friction disks each have a plurality of positioning tabs extending out from a periphery of each of the friction disks. The positioning tabs are configured for engagement with at least one adjacent removable pin removably attached to the sidewall.

According to an exemplary clutch apparatus of a hybrid electric vehicle, a clutch connection member directly transmits the torque of the motor to the input shaft, and a radially internal portion of a clutch connection member is spline-engaged with the input shaft while being supported by a step wall.

A wet multi-plate clutch includes a plate carrier with a pair of fluid passage openings and a friction plate rotationally fixed and axially displaceable relative to the plate carrier. The friction plate has a carrier element and a pair friction pads fastened to the carrier element and delimiting a groove. The groove includes a groove geometrical center line. The groove geometrical center line may extend radially through a one of the pair of fluid passage openings, or it may extend radially between the pair of fluid passage openings. If the groove geometrical center line extend radially between the pair of fluid passage openings, one of the pair of friction pads may include a pad geometrical center line extending along a radial extent through a one of the pair of fluid passage openings.

A clutch plate is disclosed. The clutch plate includes an annular body including a plurality of splined teeth around a periphery of the annular body. Each splined tooth includes: a pair of sidewalls extending in an axial direction, a base connecting the pair of sidewalls to define a channel therebetween.

A clutch includes a hub and a flange located radially inside and outside, respectively, with respect to the clutch rotational axis and associated with hub and flange sides of the clutch. A spring elastically supports the hub and flange sides against each other in the circumferential direction in a torque-transmitting manner. A bearing radially supports the hub and flange sides against one another for rotation around the axis and includes an outer ring supporting the hub and an inner ring supported on a bearing pin associated with the flange side. A friction device connects the hub and flange sides in a friction-locked and torque-transmitting manner in the circumferential direction and includes a friction element and a friction surface which are pretensioned against one another in the axial direction. A tensioning device includes a tensioning element that applies force to, and axially pretensions, the friction device and bearing.

A clutch device includes a clutch hub radially inward of a clutch rotational axis on a hub side of the device, a clutch flange radially outward on a flange side of the device, a spring device through which the hub and flange sides support each other in the circumferential direction in a resilient torque-transmitting manner, the spring device having a spring element that, in the circumferential direction, is supported at opposite ends by first and second support components assigned to the flange and hub, and a stop device through which the hub and flange sides support each other in an interlocking torque-transmitting manner in the circumferential direction when a defined maximum twist angle is reached between the hub and flange sides, wherein the stop device has first and second interlocking elements integrally formed with the first and second support components that interlock when the maximum twist angle is reached.

A clutch for a lift fan comprising at least one output shaft lug key positioned in a keyway of at least two output clutch plates and extending axially from one to the other of the two output clutch plates. The output shaft lug key couples the rotation of the output clutch plates to the rotation an output shaft and allows axial movement of the two output clutch plates relative the output shaft lug key. The output shaft has an outer radial surface and an oppositely disposed inner radial surface, and the inner surface of the output shaft lug key extends radially to the seat of the keyway.

A clutch device includes first frictional elements and second frictional elements connectable to the first frictional elements. The clutch device has a hub connected to a first part of the second frictional elements, a movable contact plate connected to a second part of the second frictional elements, a disengaging plate for actuating the contact plate, and a pressure disk. A first bolt extends through the pressure disk and includes a first end attached to the disengaging plate, and a second end attached to the contact plate. A compression spring is positioned between the first end and the pressure disk. A leaf spring is joined to the contact plate and to the hub. A first centrifugal unit is arranged to move the pressure disk in the axial direction against the compression spring to clamp the first and second frictional elements when a first speed of rotation is reached.

A clutch and a compressor including the same, and may include a hub fastened to a rotary shaft of a compressor and rotatable with the rotary shaft in a state where its position has been fixed, a disk fastened to the hub and rotatable with the hub, a pulley rotated by receiving power from a driving source of the compressor, an elastic member fastening the hub and the disk, fastening the hub and the disk so that the disk approaches or is away from the pulley based on the hub, a field coil assembly magnetized when power is applied to contact or space the disk and the pulley, an attenuation member interposed between the elastic member and the disk, thereby reducing the noise and vibration due to the contact and spacing between the disk and the pulley by the elastic member and the attenuation member.