An inflatable vehicle occupant protection device (10) comprises flexible material defining an inflation fluid volume (42) for receiving inflation fluid. The material includes a first panel portion (30) on which is located a set of first points (A-D) and a second panel portion (40) on which is located...http://www.google.es/patents/US6428042?utm_source=gb-gplus-sharePatente US6428042 - Dual volume air bag with vent
