US Patent 8469395 Vehicle seat with a side airbag device

A safety device for a vehicle seat is disclosed. The vehicle seat has a backrest that extends in the transverse direction of the vehicle, the backrest having at least one lateral region and an upper region from which a headrest extends. Arranged on the backrest is a side airbag device with at least one inflator and a side airbag. The side airbag has a thorax section (22). The head section (26) emerges from the upper region of the backrest (12) beside the headrest (14) when the inflator is actuated, and the inner wall (26a) of the head section (26) is toward the interior of the vehicle relative to the inner wall (22a) of the thorax section (22). The inner wall (22a) of the thorax section (22) and the outer wall (26b) of the head section (26) are connected via overflow openings (31, 34).