Inflatable occupant restraint cushion

摘要

The cushion comprises a first section of material having a centre and a perimeter including perimeter edges, the first section of material including at least one 'Z' profile lap structure comprising a first fold formed along a first fold line disposed in opposing relation to a first perimeter edge. It has a second fold reverse in direction to the first fold disposed along a second fold line located between the first fold line and the first perimeter edge such that a portion of the material between the centre and the first perimeter edge of the first section of material comprises a layered structure including overlapping interior layers and an attachment margin disposed outboard of the overlapping interior layers. There is a second section of material in opposed mating relation to the first section of material. There are members for attaching the first section of material to the second section of material around the perimeter of the first section of material within the attachment margin to form an enclosure between the first and second sections of materials.