Abstract: A self-locking differential gear for motor vehicles with locking devices for automatically locking the differential gear, which are coordinated to each driven gear; a mechanism in the form of a torque scale is thereby coordinated to each driven gear which in case of a force equilibrium, retains the respective locking device in its ineffectual position and transfers the same automatically into its effective position during a disturbance of this equilibrium.

Abstract: A self-locking differential gear for motor vehicles with a rotating differential gear housing which accommodates the differential gears which in turn engage with driven gears arranged on the axle shafts; means for locking the differential gear which are coordinated to each driven gear and which are operatively connected with the driven gear are in the form of an inertia member that is rotatable and axially movable by means of a thread with respect to the driven gear against the action of return means while the inertia member is operatively connected with double-acting locking means.