A differential transmission having an epicyclic housing, a first sun gear in the epicyclic housing, a second sun gear also in the epicyclic housing and arranged on the same axis of revolution as the first sun gear, a planetary assembly revolves around the axis of revolution together with the epicyclic housing and couples the two sun gears such that they can rotate in opposite directions, and a coupling device in a receiving space defined between the sun gears for generating a bridging torque which couples the two sun gears in a frictional manner. The coupling device has a first coupling ring element supported via a conical surface against a first conical inner wall of the receiving space, and a second coupling ring element supported via a conical surface against a second conical inner wall of the receiving space, and a spring arrangement axially loads the two coupling ring elements such that they are pressed against the respective conical inner wall of the receiving space.

A hybrid drive vehicle having: at least one driving wheel; an internal combustion engine provided with a drive shaft; an electric machine provided with its own shaft; a gearbox which transmits motion to the driving wheel; a disengagable coupling which acts as a synchroniser and is interposed, to establish a disconnectable mechanical connection, between the drive shaft and the shaft of the electric machine; and a transmission shaft interposed, to establish a permanent mechanical connection, between the shaft of the electric machine on the opposite side to the coupling and the gearbox.

A friction surface clutch having two conical friction surface pairs each with an inner friction surface element and an outer friction surface element, wherein the inner friction surface element is mounted axially displaceable with respect to a rotational axis, and wherein a frictionally locking connection is set up and canceled in a manner which is dependent on the axial displacement position of the inner friction surface element. The inner friction surface element is coupled to a separate transmission element such that the inner friction surface element and the transmission element can be rotated jointly about the rotational axis, with the coupling being set up via a bearing contact between a guide surface on the inner friction surface element and a countersurface on the transmission element.

A wedge clutch imparts a wedging effect to selectively transfer power through powertrain components. The wedge clutch includes a hub configured to rotate about an axis. The hub has a tapered surface facing the axis. A rotatable member is configured to rotate about the axis and has a groove facing away from the axis. A disk is configured to radially expand and contract about the axis. The disk has an outer surface facing the tapered surface of the hub, and an inner surface facing the groove of the rotatable member. Axial movement of the hub along the axis toward the rotatable member slides the tapered surface of the hub along the outer surface of the disk to move the inner surface of the disk toward the groove of the rotatable member to frictionally engage the hub and the rotatable member and transfer power through the wedge clutch.

A wedge clutch imparts a wedging effect to selectively transfer power through powertrain components. The wedge clutch includes a hub configured to rotate about an axis. The hub has a tapered surface facing the axis. A rotatable member is configured to rotate about the axis and has a groove facing away from the axis. A disk is configured to radially expand and contract about the axis. The disk has an outer surface facing the tapered surface of the hub, and an inner surface facing the groove of the rotatable member. Axial movement of the hub along the axis toward the rotatable member slides the tapered surface of the hub along the outer surface of the disk to move the inner surface of the disk toward the groove of the rotatable member to frictionally engage the hub and the rotatable member and transfer power through the wedge clutch.

A synchronizer ring for a synchronization unit has a substantially constant sheet-metal cone which tapers in direction of its ring axis from a first axial cone end towards a second axial cone end. At the sheet-metal cone a centering collar is integrally molded and the sheet-metal cone includes a first sheet portion and axially adjacent a second sheet portion. In addition, the sheet-metal cone includes a step portion which axially extends between the second axial cone end and the first sheet portion, wherein a radial outer side of the step portion is offset with respect to a radial outer side of the first sheet portion towards the ring axis. Furthermore, there is shown a method for manufacturing a synchronizer ring.

A disconnect clutch for a torque transfer device for a vehicle, including: an axis of rotation; an input shaft arranged to receive torque from a torque generating or transmitting device for the vehicle; an output shaft arranged to transmit the torque; a forward clutch having a first torque-carrying capacity; a reverse clutch having a second torque-carrying capacity less than the first torque-carrying capacity; and an actuator system. For a forward connect mode in which the input shaft is rotating in a first rotational direction, the actuator system is arranged to close the forward clutch to non-rotatably connect the input and output shafts. For a reverse connect mode in which the input shaft is rotating in a second rotational direction opposite the first rotational direction, the actuator system is arranged to close the reverse clutch to close the reverse clutch to non-rotatably connect the input and output shafts.

An impact tool includes a tool body, a tool holder, a cylindrical member, a reciprocating member, a motor, a first rotary body, a second rotary body, a swinging member, and clutch mechanisms. The clutch mechanisms are disposed between the first rotary body and the second rotary body on a power transmission path from the motor to the swinging member. The tool holder and the cylindrical member move together as a movable unit with respect to the tool body between a front end position and a separate position, according to a pressing force applied to the tool holder. The clutch mechanisms are each configured to start transmission of the first rotary body to the second rotary body while the movable unit moves from the front end position to the separate position and to interrupt transmission while the movable unit moves from the separate position to the front end position.

An impact tool includes a tool body, a tool holder, a cylindrical member, a reciprocating member, a motor, a first rotary body, a second rotary body, a swinging member, and clutch mechanisms. The clutch mechanisms are disposed between the first rotary body and the second rotary body on a power transmission path from the motor to the swinging member. The tool holder and the cylindrical member move together as a movable unit with respect to the tool body between a front end position and a separate position, according to a pressing force applied to the tool holder. The clutch mechanisms are each configured to start transmission of the first rotary body to the second rotary body while the movable unit moves from the front end position to the separate position and to interrupt transmission while the movable unit moves from the separate position to the front end position.

A wedge clutch comprising an axis of rotation, a hub having a first radially outwardly facing surface sloping radially inward in a first axial direction, an outer race located radially outward of the hub and including, a first radially inwardly facing surface, and, a circumferential groove in the first radially inwardly facing surface, and, a first plurality of wedge plates radially disposed between the hub and outer race, each wedge plate in the first plurality of wedge plates including, a respective second radially inwardly facing surface directly engaged with the first radially outwardly facing surface, and, a respective second radially outwardly facing surface, wherein said each wedge plate has a different respective first radial dimension between the respective second radially inwardly and outwardly facing surfaces.