Patent ID: 7220207

Claim:
A differential apparatus, arranged between two axle shafts, for rotating the two axle shafts at different speeds or at the same speed, the differential apparatus comprising: differential gears for connecting the two axle shafts to each other; an output shaft member having a differential case portion for accommodating the differential gears and an output shaft portion integrally formed with the differential case portion from the same material, wherein the output shaft member is a single and monolithic cast member; a driving source that supplies the output shaft member with torque, wherein the driving source is a motor; a motor case for accommodating the motor; and two bearings that support the output shaft member in a manner rotatable with respect to the motor case, one of the bearings being arranged on one end of the output shaft portion and the other one of the bearings being arranged on one end of the gear case portion opposite to the output shaft portion.