Abstract: Two coupling pawls are mounted eccentrically and pivotably in their center of gravity on a drive pulley of the tightening rotary drive. A coupling ring is non-rotatably connected to the belt coiling shaft of the belt retractor. The coupling ring comprises an internal toothing into which the coupling pawls are driven solely by the action of inertia forces to establish a coupling connection. The coupling pawls are offset in the peripheral direction with respect to each other by an angle which corresponds to an odd multiple of half the pitch of the internal toothing of the coupling ring.

Abstract: Buckle assembly for motor vehicle safety belts including a buckle member and an insert tongue secured to a belt, the insert tongue being insertable in a given insertion direction into the buckle member so as to be secured in a locking position therein, the buckle member including a base plate, a latch member pivotally mounted on the base plate transversely to the given insertion direction, a spring-biased key depressible so as to pivot the latch member about the insert tongue in the locking position, the latch member being formed with a latch nose which, in the locking position of the insert tongue, engages in a recess formed in the insert tongue, the base plate being formed with a recess in a substantially central region thereof that is longer and wider than the latch member, the recess in the base plate being partly defined by a forward edge formed with ears having an open gap therebetween and bent at an angle initially outwardly and, in a free marginal region thereof, in the given insertion direction of th