Abstract: An air bag for side impact protection system comprising: an air bag (50) having an inflatable first chamber (50a) formed of two joined-together first (52a) and second (52b) panels of material, the first chamber including a forward part (26) and an opposite rear part (60); an inflator (26) for generating inflation gas to inflate the air bag, the inflator including exit ports (26a) which channel the inflation gas into the first chamber in a determinable direction; the air bag further including a flow diverter (70, 90) positioned to receive inflation gas and to divert at least a component of the inflation gas to flow generally perpendicular to the first direction. In one embodiment the flow diverter is formed as an open topped tube; in another embodiment; the flow diverter includes a plurality of vent openings in the side of the tube. In a third embodiment of the invention the diverter is formed by a permeable sack of material.

Abstract: A housing (1) for a gas generator (9) for a vehicle occupant side airbag inflator, the housing (1) comprising an elongate back plate (2) for supporting the gas generator (9) having side flanges (3) extending laterally of the gas generator (9) at one end of the back plate (2) and having a retaining ring fixed to the back plate (2) at its other end, and arranged to circumscribe the gas generator (9), to hold the gas generator (9) securely. Preferably the housing (1) has an integral manifold and the retaining ring end is open to accommodate different widths and lengths of gas generator (9). The invention allows mounting of a gas generator with much reduced rattle.

Abstract: A side impact airbag (10) and a method of folding. The airbag (10) comprises a head and a thorax compartment (5,6) separated by a panel (4) of airbag fabric and pneumatically linked by a vent hole (13) in the panel (4). On inflation the panel is adjacent the shoulder of an average occupant. The airbag (10) may be made of two or three pieces of fabric. If only two pieces are used then the dividing panel (4) is formed from part of one or both of the other two pieces. The inflation profile of the airbag (10) may be controlled by tethers (8) or by mounting it at 10°-40° to the horizontal. Tethers and stitching may also be used. The two compartments (5,6) may be of different weight and denier; a higher weight fabric for the lower, thorax, compartment (6), and a lower weight fabric for the upper head compartment (5). An airbag folding method is also described.