A powertrain incorporates a link shaft between the transmission output shaft and downstream components in order to facilitate use of a torque sensor. The link shaft includes an inner section splined to the output shaft and an outer section treated to produce a magnetic field that varies based on transmitted torque. The inner section and outer section are separated by a circumferential gap that directs the torque past the treated surface. Use of the link shaft eliminates the need to directly treat the transmission output shaft. Separating the spline and the treated surface radially reduces the axial length required for torque sensing and allows commonality among variants with and without torque sensors and between two wheel drive and four wheel drive variants.

A powertrain incorporates a link shaft between the transmission output shaft and downstream components in order to facilitate use of a torque sensor. The link shaft includes an inner section splined to the output shaft and an outer section treated to produce a magnetic field that varies based on transmitted torque. The inner section and outer section are separated by a circumferential gap that directs the torque past the treated surface. Use of the link shaft eliminates the need to directly treat the transmission output shaft. Separating the spline and the treated surface radially reduces the axial length required for torque sensing and allows commonality among variants with and without torque sensors and between two wheel drive and four wheel drive variants.

A transmission device of automatic document feeder includes a pickup roller assembly, a paper-feed roller assembly, a paper-out roller assembly, a pickup gear assembly for driving the pickup roller assembly, a first transmission gear assembly, a second transmission gear assembly, a drive gear assembly and a motor. The paper-feed roller assembly includes a paper-feed shaft. The paper-out roller assembly includes a paper-out shaft. The first transmission gear assembly includes a first one-way gear and a second one-way gear. The motor bidirectionally drives the drive gear assembly. The motor drives the drive gear assembly to drive the first one-way gear together with the second transmission gear assembly or the second one-way gear together with the second transmission gear assembly to drive the paper-out shaft and the paper-feed shaft to unidirectionally rotate towards the same direction.

In at least some implementations, a differential for a vehicle includes a pinion gear, a pair of side gears and a housing. The side gears are meshed with the pinion gear and the housing defines a cavity in which the pinion gear and side gears are received. The housing also has an opening with an inner end leading to the cavity and an outer end spaced from the inner end. The opening is adapted to receive a shaft therethrough for coupling of the shaft to one of the side gears and the opening is defined at least in part by a journal surface. The journal surface is concave with respect to the shaft and provides a converging portion from the inner end to a central portion between the inner end and outer end and a diverging portion from the central portion to the outer end.

In at least some implementations, a differential for a vehicle includes a pinion gear, a pair of side gears and a housing. The side gears are meshed with the pinion gear and the housing defines a cavity in which the pinion gear and side gears are received. The housing also has an opening with an inner end leading to the cavity and an outer end spaced from the inner end. The opening is adapted to receive a shaft therethrough for coupling of the shaft to one of the side gears and the opening is defined at least in part by a journal surface. The journal surface is concave with respect to the shaft and provides a converging portion from the inner end to a central portion between the inner end and outer end and a diverging portion from the central portion to the outer end.

A bicycle hub assembly comprises a hub axle, a hub shell, a sprocket support body, a first ratchet member, a second ratchet member, and a holding member. The sprocket support body includes a first helical spline. The first ratchet member includes at least one first ratchet tooth, and a second helical spline configured to mate with the first helical spline. The second ratchet member includes at least one second ratchet tooth configured to mate with the at least one first ratchet tooth, and a hub shell engagement portion configured to engage with the hub shell. The holding member is configured to hold an assembled state where the sprocket support body. The first ratchet member and the second ratchet member are assembled as a single unit.

A bicycle hub assembly comprises a hub axle, a hub shell, a sprocket support body, a first ratchet member, a second ratchet member, and a holding member. The sprocket support body includes a first helical spline. The first ratchet member includes at least one first ratchet tooth, and a second helical spline configured to mate with the first helical spline. The second ratchet member includes at least one second ratchet tooth configured to mate with the at least one first ratchet tooth, and a hub shell engagement portion configured to engage with the hub shell. The holding member is configured to hold an assembled state where the sprocket support body. The first ratchet member and the second ratchet member are assembled as a single unit.

The present teachings provide for a clutch including a hub, a rotor, and an electromagnet. The hub can be rotatable about a central axis. The rotor can be rotatable about the central axis and can be rotatable relative to the hub. The rotor can define an annular cavity that can be disposed about the central axis. A surface of the annular cavity can define at least one groove that can extend helically about the central axis. The electromagnet can be received in the annular cavity. When the electromagnet is energized, the hub can engage the rotor to transmit torque between the hub and rotor.

The present teachings provide for a clutch including a hub, a rotor, and an electromagnet. The hub can be rotatable about a central axis. The rotor can be rotatable about the central axis and can be rotatable relative to the hub. The rotor can define an annular cavity that can be disposed about the central axis. A surface of the annular cavity can define at least one groove that can extend helically about the central axis. The electromagnet can be received in the annular cavity. When the electromagnet is energized, the hub can engage the rotor to transmit torque between the hub and rotor.

A gear transmission including: a plurality of gear wheels having a different diameter meshing with each other, at least one first driving gear wheel activated in rotation about its own axis, and at least one second driven gear wheel meshing with the first gear wheel, teeth being asymmetrical, with active sides conjugate with one another inactive sides of the teeth of the wheels not being conjugated with one another, and the inactive side is configured so that the radius passing by a tip of the teeth is substantially tangent to the inactive side or intersects the inactive side.