Patent ID: 7278659

Claim:
An adaptation method for adapting a window air bag device protecting the head of passengers sitting in a front seat and a rear seat of a vehicle to a plurality of vehicle models of a vehicle fleet, comprising the steps of: determining, for all vehicle models of the vehicle fleet, a size for each of a limited number of inflatable air bags having a front expansion portion for protecting the head of a front seat passenger, a rear expansion portion for protecting the head of a rear seat passenger and a gas passage connecting a gas chamber of the front expansion portion with a gas chamber of the rear expansion portion; determining a configuration for each of a limited number of substantially triangular tension cloths on the basis of a longitudinal length between the determined inflatable air bags and A pillars of groupings of vehicle models of the vehicle fleet to be provided with inflatable air bags; adapting an air bag module by combining an air bag conformable to a selected vehicle model based on the distance between the front and rear seats of the selected vehicle model of the vehicle fleet, selected from the limited number of determined inflatable air bags having at least different longitudinal lengths and one tension cloth conformable to the vehicle model, selected from the limited number of determined tension cloths having different dimensions which are determined based on distances between the inflatable air bags and a pillar of respective vehicle models adapted to be equipped with the air bags by stitching the tension cloth onto the air bag, and adding an inflator, having a single configuration, connected with a gas inlet of the selected inflatable air bag to the selected vehicle model, wherein the inflator is added in substantially a middle, top portion of the air bag and provides gas to a gas passage extending along a top side of the air bag, wherein the limited number of air bags is in the range between about 3 and about 6; and the limited number of tension cloths is in the range between about 3 and about 6.