A lamination for use in an integrated drive generator is formed from a plurality of plates having a body including a pair of opposed cylindrical surfaces. Non-cylindrical ditches are defined circumferentially intermediate the pair of cylindrical surfaces. A plurality of passages are formed in an outer periphery of the cylindrical surfaces including relatively large holes extending through a slot to the outer periphery. Grooves are formed intermediate the relatively large holes.

A lamination for use in an integrated drive generator is formed from a plurality of plates having a body including a pair of opposed cylindrical surfaces. Non-cylindrical ditches are defined circumferentially intermediate the pair of cylindrical surfaces. A plurality of passages are formed in an outer periphery of the cylindrical surfaces including relatively large holes extending through a slot to the outer periphery. Grooves are formed intermediate the relatively large holes.

A front-and-rear-wheel-drive vehicle includes an electric motor; a speed change mechanism; a first output rotation shaft that transmits a drive force of the electric motor that has been transmitted to an intermediate output member, to one of a front wheel side and a rear wheel side; and a second output rotation shaft that transmits the drive force that has been transmitted to the intermediate output member, to another of the front wheel side and the rear wheel side. The first and second output rotation shafts are disposed coaxially with the intermediate output member. The electric motor is disposed such that a rotation axis of a motor shaft is positioned in parallel with a rotation axis of the intermediate output member and the first and second output rotation shafts and vertically above the rotation axis of the intermediate output member and the first and second output rotation shafts.

The (VDS.Math.CVT) is a continuously variable transmission. This mechanism consists of two sets variable diameter shaft, one sun gear set. On each shaft sets are mounted a number of the guide rods on shafts, some movable sets that any of them placed on each pair guide rods, two guide disks with some curve grooves on surface, by rotation of disks, the diameters of shaft will be changes. Variation's diameters in two shaft sets are Continuous. The variations ratio of the rotational speed between two shaft sets are continuous. Secondary shaft connected with one components of sun gear set, and second component of sun gear set connected with input shaft and third component of sun gear set connected with output shaft. Because the variations of the rotational speed on the secondary shaft is continuous, the variations of the rotational speed on the output shaft will be continuously.

A power unit of a utility vehicle includes a power source for travel of the utility vehicle, a continuously variable transmission, a gear transmission, a first clutch, a second clutch, and an output mechanism. The gear transmission includes a first GT input shaft, a second GT input shaft, a GT output shaft, a first GT intermediate shaft, a second GT intermediate shaft, first speed-change gears, second speed-change gears, a first transmission gear, and a second transmission gear. The first clutch is configured to disable power transmission from the power source to the first GT input shaft. The second clutch is configured to disable power transmission from a CVT output shaft of the continuously variable transmission to the second GT input shaft.

A transmission, including an outer shell (1), an inner shell (2), a drive disk (3), a plurality of T-shaped teeth (4), a gear (5), a tooth seat (6), an adjustable nut (7), balls (8), inner balls (9), outer balls (10), an inner protective frame (11), an outer protective frame (12), rollers (13), a first sealing ring (14), a second sealing ring (15) and a third sealing ring (16). Transmission clearance can be adjusted freely at any time, the meshing of the T-shaped tooth and the gear is a real surface meshing, and almost all the teeth participate in force transmission simultaneously. Therefore, the transmission has high precision, high mechanical properties, and long service life.

A transmission, including an outer shell (1), an inner shell (2), a drive disk (3), a plurality of T-shaped teeth (4), a gear (5), a tooth seat (6), an adjustable nut (7), balls (8), inner balls (9), outer balls (10), an inner protective frame (11), an outer protective frame (12), rollers (13), a first sealing ring (14), a second sealing ring (15) and a third sealing ring (16). Transmission clearance can be adjusted freely at any time, the meshing of the T-shaped tooth and the gear is a real surface meshing, and almost all the teeth participate in force transmission simultaneously. Therefore, the transmission has high precision, high mechanical properties, and long service life.

A tandem wheel assembly for a work vehicle includes a tandem wheel housing having a center opening extending along a pivot axis and wheel end openings extending along associated wheel end axes. The tandem wheel housing is pivotally mounted to a chassis of the work vehicle about the pivot axis. A center sprocket is rotatably disposed within the tandem wheel housing. Wheel end assemblies are disposed at the wheel end openings and each includes a wheel end sprocket, a wheel end gear train, and a wheel end hub. A pair of reaction bars are being pivotally coupled at first ends to the chassis and at second ends to a component of the respective wheel end assembly. A pivot dampening system is positioned, at least in part, axially between the tandem wheel housing and either the chassis or the component of at least one of the wheel end assemblies. The pivot dampening system is configured to dampen the pivoting of the tandem wheel housing tandem wheel housing relative to the chassis.

A tandem wheel assembly for a work vehicle includes a tandem wheel housing having a center opening extending along a pivot axis and wheel end openings extending along associated wheel end axes. The tandem wheel housing is pivotally mounted to a chassis of the work vehicle about the pivot axis. A center sprocket is rotatably disposed within the tandem wheel housing. Wheel end assemblies are disposed at the wheel end openings and each includes a wheel end sprocket, a wheel end gear train, and a wheel end hub. A pair of reaction bars are being pivotally coupled at first ends to the chassis and at second ends to a component of the respective wheel end assembly. A pivot dampening system is positioned, at least in part, axially between the tandem wheel housing and either the chassis or the component of at least one of the wheel end assemblies. The pivot dampening system is configured to dampen the pivoting of the tandem wheel housing tandem wheel housing relative to the chassis.

A first slider and a fifth-speed driving gear are arranged along an axial direction on a driving shaft. A shift fork has an end located in a guide groove of a shift drum, and another end connected to the first slider. In gear-shifting to a fifth speed, the first slider moves on the driving shaft so that a plurality of fifth-speed dog projections and a plurality of fifth-speed dog recesses mesh with each other. At least four of the plurality of fifth-speed dog projections and at least four of the plurality of fifth-speed dog recesses mesh within a range of 90 degrees at one side in the circumferential direction of the fifth-speed driving gear and a range of 90 degrees at another side in the circumferential direction of the fifth-speed driving gear with respect to a reference line.