Abstract: A turbine engine includes a core engine including a first spool and a second spool rotatable about a main engine longitudinal axis, a boost spool powered by a secondary drive system, and an accessory gearbox coupled to the core engine and the boost spool. A differential gear system is coupled between the core engine, the boost spool and the accessory gearbox for distributing power between the boost spool, the core engine and the accessory gearbox.

Abstract: A driving force distribution device for distributing driving force from an engine to left and right rear wheels has: a differential case which accommodates a differential mechanism therein; an intermediate shaft which is provided parallel to an output shaft extending leftward or rightward from the differential mechanism; a speed-up mechanism which is provided to the left or right of the differential case and changes and transmits driving force input to the differential case to the output shaft via the intermediate shaft; and a clutch mechanism capable of switching between a transmitting state in which the speed-up mechanism transmits the driving force to the output shaft and a blocking state in which the transmission of the driving force is blocked. According to the driving force distribution device, cost reduction and downsizing of the driving force distribution mechanism and a housing thereof can be realized.

Abstract: A rotation transmitting apparatus comprises a first sun gear joined to a first shaft so as to rotate interlockingly, a second shaft arranged to the first shaft coaxially, a second sun gear joined to the second shaft so as to rotate interlockingly, a first planetary gear meshed with the first sun gear, a second planetary gear rotating with the first planetary gear and meshed with the second sun gear, and a carrier supporting the first and second planetary gears and arranged to be driven by a differential electric motor. In particular, the number of teeth of each of the first and second sun gears and the first and second planetary gears is determined so that the ratio of a torque applied to the second shaft to a torque applied to the first shaft ranges from 1:0.7 to 1:0.9.

Abstract: A rotation transmitting apparatus according to the present invention includes a first sun gear, a second sun gear, first planetary gears and second planetary gears. A carrier for supporting the respective planetary gears is integrally provided with a rotor of a speed change motor for changing a speed of rotation to be transmitted, so that the number of mesh portions in the gears is reduced. Further, the rotor is formed of a cylindrical shape and an input shaft for rotating the first sun gear is inserted into the rotor, so that a limited space is effectively used.

Abstract: A brake mechanism for a motor assembly including a motor and a reduction gear assembly driving an output shaft or axle is disclosed. A brake rotor is driven by the motor shaft and a brake puck is operatively engageable with the brake rotor for moving the brake rotor toward a braking surface. A brake cam shaft is rotatably supported about an axis perpendicular to the axis of the output shaft and engages the brake puck so that rotation of the brake cam shaft about its axis forces the brake puck to move the brake rotor toward the braking surface.

Abstract: A hydraulic motor assembly having a motor and gear reduction set mounted in a housing. A brake assembly may be mounted in the port block to provide braking for the output axle or it may be located externally to the axle housing portion of the assembly. The housing may be formed of separate components, including the external surface of the ring gear and the hydraulic motor port block.

Abstract: A active steering apparatus includes a housing, an input shaft, an output shaft, and an electrical motor. The electric motor has a stator fixed to the housing and a rotor. A first gear set interconnects the input shaft and the output shaft and includes a sun gear fixed to an end of the input shaft, a ring gear fixed to the output shaft, and a plurality of planet gears positioned between and interconnecting the ring gear and the sun gear. A second gear set is mounted onto the rotor and interconnects the ring gear and the housing such that rotation of the rotor relative to the housing imparts movement of the ring gear relative to the housing.

Abstract: A hydraulic motor assembly having a motor and gear reduction set mounted in a housing. A brake assembly may be mounted in the port block to provide braking for the output axle or it may be located externally to the axle housing portion of the assembly. The housing may be formed of separate components, including the external surface of the ring gear and the hydraulic motor port block.