A gearless differential for distributing power from a motor to two follower shafts with ends connected to opposite wheels and to opposed outer disks held in position with a journal mounted casing having corresponding identical regular polygonal raceways with asymmetric sections surrounding a central drive disk there between with equidistant radial slots each holding one cylinder or roller bearing to radially reciprocate as they race along the raceways in a slippage mode where one wheel loses traction; and in a drive mode where the central drive disk power input drives both outer disks connected to the two follower shafts transferring torque evenly to both wheels so there is no movement of the cylinders or roller bearings in the raceways.

A differential with an overrunning clutch (ORC) assembly is provided. The differential includes a first plain bearing end cap with an interior surface that forms a plain bearing interface with an outer surface of a first side hub. The first plain bearing end cap further has a first outer surface portion that engages a first end portion of a roller cage assembly. A second plain bearing end cap with an interior surface that forms a plain bearing interface with an outer surface of the second side hub is also included. The second plain bearing end cap further has a first outer surface portion that engages a second end portion of the roller cage assembly. The (ORC) assembly selectively engages the roller cage assembly during an ORC condition to selectively couple torque between a ring gear and the first and second side hubs.

A vehicle electric drive apparatus is provided with a single hydraulic pump and left-side and right-side drive units. The left-side drive unit includes a left-side electric motor and a left-side transmission mechanism. The right-side drive unit includes a right-side electric motor and a right-side transmission mechanism. One of rotary shafts of the left-side transmission mechanism and one of rotary shafts of the right-side transmission mechanism constitute a pair of pump-drive rotary shafts. The single hydraulic pump is connected to the pair of pump-drive rotary shafts through respective one-way clutches, and is to be driven by one of the pump-drive rotary shafts that is rotated at a speed higher than the other of the pump-drive rotary shafts, so as to output a hydraulic pressure.

A vehicle electric drive apparatus is provided with a single hydraulic pump and left-side and right-side drive units. The left-side drive unit includes a left-side electric motor and a left-side transmission mechanism. The right-side drive unit includes a right-side electric motor and a right-side transmission mechanism. One of rotary shafts of the left-side transmission mechanism and one of rotary shafts of the right-side transmission mechanism constitute a pair of pump-drive rotary shafts. The single hydraulic pump is connected to the pair of pump-drive rotary shafts through respective one-way clutches, and is to be driven by one of the pump-drive rotary shafts that is rotated at a speed higher than the other of the pump-drive rotary shafts, so as to output a hydraulic pressure.

An axle includes: a driven disc, an inner peripheral surface of the driven disc being a first contact surface; a half shaft connector in transmission with the driven disc, the half shaft connector including a second contact surface on its outer periphery, one of the first contact surface and the second contact surface being a circular ring surface, and the other thereof being a polygonal surface; and a differential lock device including rolling members, a rolling holder, a switching driving member, a switching driven member and a second elastic reset mechanism, a plurality of rolling members being arranged in one-to-one correspondence with a plurality of faces of the polygonal surface, and the switching driving member selectively driving the switching driven member to move, to make the rolling members move to an engaged position.

A differential includes a driven body, an output element, and a clutch assembly radially interposed between the driven body and the output element. The clutch assembly includes a first wedge clutch configured to rotationally lock the output element to the driven body in a first direction and to overrun in a second direction, and a second wedge clutch configured to rotationally lock the output element to the driven body in the second direction and to overrun in the first direction.

A differential includes a driven body, an output element, and a clutch assembly radially interposed between the driven body and the output element. The clutch assembly includes a first wedge clutch configured to rotationally lock the output element to the driven body in a first direction and to overrun in a second direction, and a second wedge clutch configured to rotationally lock the output element to the driven body in the second direction and to overrun in the first direction.

A clutch includes a roller arranged between a clutch housing and a driven side rotating body. The roller is rotated about a rotation axis of a drive side rotating body together with the drive side rotating body when the drive side rotating body is rotationally driven. The roller hinders rotation of the driven side rotating body by being sandwiched between the clutch housing and the driven side rotating body when the drive side rotating body is not rotationally driven. The support member sandwiches the roller between the clutch housing and the driven side rotating body. The support member rotates about the rotation axis of the drive side rotating body together with the drive side rotating body. The grease is arranged between the clutch housing and the roller. The support member restricts rotation of the roller about a central axis of the roller.

A modified differential internal system for a vehicle differential may include a preexisting ring gear having a perimeter. The system may include a ring gear sleeve having a thickness, the ring gear sleeve being affixed to the ring gear perimeter. The system may include a spring retainer having a first surface and a second surface, the first surface having a first set of lugs and the second surface having a second set of lugs. The system may include an armature plate having a plurality of slots configured to engage the first set of lugs, and a sprag plate having a plurality of slots configured to engage the second set of lugs. The sprag plate may have a plurality of locking tabs configured to engage a sprag cage of the vehicle differential.

A modified differential internal system for a vehicle differential may include a preexisting ring gear having a perimeter. The system may include a ring gear sleeve having a thickness, the ring gear sleeve being affixed to the ring gear perimeter. The system may include a spring retainer having a first surface and a second surface, the first surface having a first set of lugs and the second surface having a second set of lugs. The system may include an armature plate having a plurality of slots configured to engage the first set of lugs, and a sprag plate having a plurality of slots configured to engage the second set of lugs. The sprag plate may have a plurality of locking tabs configured to engage a sprag cage of the vehicle differential.