An axle assembly having an input shaft, an output shaft, and an interaxle differential unit. The interaxle differential unit includes a first side gear, a second side gear, a spider, at least one pinion gear, and a case. The case encircles the first side gear and the spider and has an integral drive gear.

A final drive differentially for distributing torque input into a shaft via a differential device to a pair of axles is provided with a ring gear coupled via gearing to the shaft to transmit the torque to the differential device. A housing unitarily includes a main portion supporting the shaft and enclosing the differential device, and a wall portion including a first opening through which one of the axles passes and supporting a first end of the differential device. A cover included a second opening through which the other of the axles passes, and is combined with the housing to support a second end of the differential device, wherein the wall portion, the ring gear, and the shaft are arranged, from the wall portion toward the cover, in an order of the wall portion, the ring gear, and the shaft.

The description is directed broadly to a locking differential, comprising; a pair of rotating bevel gears engaged with one another via at least one pinion gear rotatably supported within a carrier; a locking member disposed within the carrier and engagable with each of the bevel gears, the locking member being movable between a locked configuration and an unlocked configuration, such that in the unlocked configuration the locking member allows free rotation of the bevel gears in engagement with the at least one pinion gear to equalise torque between a first bevel gear and a second bevel gear of the pair, and in the locked configuration the locking member locks the first bevel gear to the carrier and locks the second bevel gear to the carrier, simultaneously, to prevent relative movement therebetween.

An axle assembly having an input shaft, an output shaft, and an interaxle differential unit. The interaxle differential unit includes a first side gear, a second side gear, a spider, at least one pinion gear, and a case. The case encircles the first side gear and the spider and has an integral drive gear.

In a support structure for a rotating member, in which a support body supporting a rotating member so as to be rotatable around a predetermined axis is provided with a spherical support face that is recessed toward a side opposite to the rotating member, and a back face of the rotating member is rotatably and slidably supported on the support face, the back face of the rotating member is formed as a convexly curved face that is curved so that portions on opposite sides of the axis each protrude toward the support face when viewed in a cross section containing an entirety of the axis. In order for the back face to be supported on the support face via an apex portion of the convexly curved face, a radius of curvature of at least the apex portion is set smaller than a radius of curvature of the support face.

A side pinion is disclosed for use with a differential of a mobile machine. The side pinion may have a body with a flat bottom and a flat top located at an end opposite the flat bottom. The side pinion may also have a plurality of gear teeth formed adjacent the flat top, and an arcuate outer surface connecting the plurality of gear teeth to the flat bottom.

A differential is disclosed for use with a drivetrain of a mobile machine. The differential may have an input gear, a first side gear, a second side gear, and a side pinion disposed between and intermeshed with the first and second side gears. The differential may also have a carrier connected to the input gear and surrounding the first side gear, the second side gear, and the side pinion. The carrier may have a first orifice located in an annular wall at a base end of the side pinion, and a second orifice located in an axial wall. All lubrication passing through the first orifice may flow around an external surface of the side pinion.

A differential gearbox is for receiving rotational power from a power unit (a motor and a gear) of a 1000 cc motorcycle via a drive shaft, where both the power unit and the differential gearbox are disposed centrally with respect to a transverse dimension of a Formula 1000 category race car chassis. The differential gearbox comprising a stationary differential gearbox case, an input shaft and a pinion sprocket, a power receiving sprocket that is rotatable by the input shaft and the pinion sprocket, a gearbox differential transmission assembly that is mechanically powered by and rotatable with the power receiving sprocket about a common axis, and two output drive shafts rotatable by the differential transmission assembly in different rotation speeds.

A differential device includes a ring gear having a center axis of the ring gear. A pinion shaft is provided in the ring gear such that a shaft axis of the pinion shaft is substantially perpendicular to the center axis and substantially coaxial with a diameter of the ring gear. The pinion shaft is rotatable together with the ring gear around the center axis. A first attaching member is connected to the ring gear and has a first fitting hole into which a first end portion of the pinion shaft is fitted. A second attaching member is connected to the ring gear and has a second fitting hole into which a second end portion of the pinion shaft is fitted.

An integrated pinion shaft and constant velocity joint (PS/CVJ) assembly for use in motor vehicle driveline applications to transfer torque between a propshaft and a ring gear. The PS/CVJ assembly includes a pinion shaft having a pinion gear segment meshed with the ring gear and a hollow pinion shaft segment. The PS/CVJ assembly also includes a constant velocity joint having an inner race coupled to the propshaft and an outer race integral with or fixed to an end portion of the pinion shaft segment.