Abstract: A drive apparatus having an axle and drive gear for the axle mounted within a housing, the drive gear capable of being drivingly coupled to a worm gear formed on an input shaft. An actuator extending into the housing and cooperating with the input shaft, where the actuator may rotate the input shaft about a point along the longitudinal axis of the input shaft between the first and second ends thereof to move the worm gear from a first position where it is engaged to and drives the drive gear and a second position where the worm gear does not contact the drive gear.

Abstract: A hydraulic torque vectoring differential includes two epicyclic gear sets and two variable displacement hydrostatic units. Each hydrostatic unit is coupled to a reaction member of one of each of the epicyclic gear sets, each of which also has a first gear element coupled to an input drive shaft for power input from a prime mover of said vehicle and a third gear element coupled to an output shaft operatively driving the wheels of the vehicle. The hydrostatic units are hydraulically coupled so that hydraulic fluid pressurized in one hydrostatic unit drives the other hydrostatic unit, and fluid pressurized in the other hydrostatic unit drives the one hydrostatic unit. A control system controls the displacement of the variable displacement hydrostatic units.