Abstract: An airbag integrated into a belt portion of a seat belt assembly for a motor vehicle seat belt system. The seat belt assembly includes seat belt webbing forming the lap belt portion and a shoulder belt portion and a spool assembly engaging the shoulder belt portion of the seat belt webbing. The seat belt assembly incorporates a gas driven pretensioner system incorporating at least one gas generator connected to the spool assembly and the belt airbag.

Abstract: Disclosed is a seatbelt retractor having a frame, a spindle connected to a locking head, a gear wheel and a gear wheel control device. The spindle is supported by the frame for rotatable movement within the frame. The gear wheel is disposed around the locking head and has rotatable movement around the locking head. In order for torque to be transferred from the gear wheel to the locking head, a shearing pin is fixedly connected to the gear wheel and the locking head. In the event of a vehicle collision, a pretensioner will rotate the spindle and the locking head such that the shear pin will shear, limiting the effect of the gear wheel on the rotation of the spindle.